diff --git a/src/autocmd.c b/src/autocmd.c
index e6cdb36..614bc33 100644
--- a/src/autocmd.c
+++ b/src/autocmd.c
@@ -1193,7 +1193,7 @@
 		    return FAIL;
 		}
 
-		ap = (AutoPat *)alloc((unsigned)sizeof(AutoPat));
+		ap = (AutoPat *)alloc(sizeof(AutoPat));
 		if (ap == NULL)
 		    return FAIL;
 		ap->pat = vim_strnsave(pat, patlen);
@@ -1242,7 +1242,7 @@
 	    prev_ac = &(ap->cmds);
 	    while ((ac = *prev_ac) != NULL)
 		prev_ac = &ac->next;
-	    ac = (AutoCmd *)alloc((unsigned)sizeof(AutoCmd));
+	    ac = (AutoCmd *)alloc(sizeof(AutoCmd));
 	    if (ac == NULL)
 		return FAIL;
 	    ac->cmd = vim_strsave(cmd);
@@ -2303,8 +2303,8 @@
 	    {
 		name = event_nr2name(apc->event);
 		s = _("%s Autocommands for \"%s\"");
-		sourcing_name = alloc((unsigned)(STRLEN(s)
-					    + STRLEN(name) + ap->patlen + 1));
+		sourcing_name = alloc(STRLEN(s)
+					      + STRLEN(name) + ap->patlen + 1);
 		if (sourcing_name != NULL)
 		{
 		    sprintf((char *)sourcing_name, s,
diff --git a/src/buffer.c b/src/buffer.c
index 425c914..d990716 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -2577,7 +2577,7 @@
     /* Make a copy of "pat" and change "^" to "\(^\|[\/]\)". */
     if (*pat == '^')
     {
-	patc = alloc((unsigned)STRLEN(pat) + 11);
+	patc = alloc(STRLEN(pat) + 11);
 	if (patc == NULL)
 	    return FAIL;
 	STRCPY(patc, "\\(^\\|[\\/]\\)");
@@ -2634,7 +2634,7 @@
 		break;
 	    if (round == 1)
 	    {
-		*file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
+		*file = (char_u **)alloc(count * sizeof(char_u *));
 		if (*file == NULL)
 		{
 		    vim_regfree(regmatch.regprog);
diff --git a/src/change.c b/src/change.c
index b43ba35..d2aa153 100644
--- a/src/change.c
+++ b/src/change.c
@@ -985,7 +985,7 @@
 	}
     }
 
-    newp = alloc_check((unsigned)(linelen + newlen - oldlen));
+    newp = alloc(linelen + newlen - oldlen);
     if (newp == NULL)
 	return;
 
@@ -1060,7 +1060,7 @@
     oldp = ml_get(lnum);
     oldlen = (int)STRLEN(oldp);
 
-    newp = alloc_check((unsigned)(oldlen + newlen + 1));
+    newp = alloc(oldlen + newlen + 1);
     if (newp == NULL)
 	return;
     if (col > 0)
@@ -1213,7 +1213,7 @@
 	newp = oldp;			    // use same allocated memory
     else
     {					    // need to allocate a new line
-	newp = alloc((unsigned)(newlen + 1));
+	newp = alloc(newlen + 1);
 	if (newp == NULL)
 	    return FAIL;
 	mch_memmove(newp, oldp, (size_t)col);
diff --git a/src/channel.c b/src/channel.c
index 31c9bbe..1564128 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -2024,7 +2024,7 @@
 	}
 	else
 	{
-	    item = (jsonq_T *)alloc((unsigned)sizeof(jsonq_T));
+	    item = (jsonq_T *)alloc(sizeof(jsonq_T));
 	    if (item == NULL)
 		clear_tv(&listtv);
 	    else
@@ -2223,7 +2223,7 @@
 	/* append after the last item that was pushed back */
 	item = item->jq_next;
 
-    newitem = (jsonq_T *)alloc((unsigned)sizeof(jsonq_T));
+    newitem = (jsonq_T *)alloc(sizeof(jsonq_T));
     if (newitem == NULL)
 	clear_tv(rettv);
     else
diff --git a/src/charset.c b/src/charset.c
index cff62e1..171eccb 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -355,10 +355,10 @@
 		    len += 4;	/* illegal byte sequence */
 	    }
 	}
-	res = alloc((unsigned)(len + 1));
+	res = alloc(len + 1);
     }
     else
-	res = alloc((unsigned)(vim_strsize(s) + 1));
+	res = alloc(vim_strsize(s) + 1);
     if (res != NULL)
     {
 	*res = NUL;
diff --git a/src/debugger.c b/src/debugger.c
index 78e32d3..b79f613 100644
--- a/src/debugger.c
+++ b/src/debugger.c
@@ -873,7 +873,7 @@
     // Replace K_SNR in function name with "<SNR>".
     if (!file && fname[0] == K_SPECIAL)
     {
-	name = alloc((unsigned)STRLEN(fname) + 3);
+	name = alloc(STRLEN(fname) + 3);
 	if (name == NULL)
 	    name = fname;
 	else
diff --git a/src/dict.c b/src/dict.c
index 007a7ff..6e1d0d6 100644
--- a/src/dict.c
+++ b/src/dict.c
@@ -210,7 +210,7 @@
 {
     dictitem_T *di;
 
-    di = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T) + STRLEN(key)));
+    di = (dictitem_T *)alloc(sizeof(dictitem_T) + STRLEN(key));
     if (di != NULL)
     {
 	STRCPY(di->di_key, key);
@@ -228,8 +228,7 @@
 {
     dictitem_T *di;
 
-    di = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T)
-						      + STRLEN(org->di_key)));
+    di = (dictitem_T *)alloc(sizeof(dictitem_T) + STRLEN(org->di_key));
     if (di != NULL)
     {
 	STRCPY(di->di_key, org->di_key);
diff --git a/src/diff.c b/src/diff.c
index 38ae0b4..3c72e12 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -537,7 +537,7 @@
 {
     diff_T	*dnew;
 
-    dnew = (diff_T *)alloc((unsigned)sizeof(diff_T));
+    dnew = (diff_T *)alloc(sizeof(diff_T));
     if (dnew != NULL)
     {
 	dnew->df_next = dp;
@@ -1123,7 +1123,7 @@
     {
 	len = STRLEN(tmp_orig) + STRLEN(tmp_new)
 				      + STRLEN(tmp_diff) + STRLEN(p_srr) + 27;
-	cmd = alloc((unsigned)len);
+	cmd = alloc(len);
 	if (cmd == NULL)
 	    return FAIL;
 
@@ -1218,7 +1218,7 @@
     if (esc_name == NULL)
 	goto theend;
     buflen = STRLEN(tmp_orig) + STRLEN(esc_name) + STRLEN(tmp_new) + 16;
-    buf = alloc((unsigned)buflen);
+    buf = alloc(buflen);
     if (buf == NULL)
 	goto theend;
 
diff --git a/src/digraph.c b/src/digraph.c
index d936136..a26d10c 100644
--- a/src/digraph.c
+++ b/src/digraph.c
@@ -2317,7 +2317,7 @@
 	/* Source the keymap file.  It will contain a ":loadkeymap" command
 	 * which will call ex_loadkeymap() below. */
 	buflen = STRLEN(curbuf->b_p_keymap) + STRLEN(p_enc) + 14;
-	buf = alloc((unsigned)buflen);
+	buf = alloc(buflen);
 	if (buf == NULL)
 	    return e_outofmem;
 
diff --git a/src/edit.c b/src/edit.c
index 8a008cb..6e2fdb8 100644
--- a/src/edit.c
+++ b/src/edit.c
@@ -1943,7 +1943,7 @@
 	{
 	    curwin->w_cursor.col = (colnr_T)new_cursor_col;
 	    i = (int)curwin->w_virtcol - vcol;
-	    ptr = alloc((unsigned)(i + 1));
+	    ptr = alloc(i + 1);
 	    if (ptr != NULL)
 	    {
 		new_cursor_col += i;
diff --git a/src/eval.c b/src/eval.c
index 6950348..4796a25 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -5151,7 +5151,7 @@
      * Copy the string into allocated memory, handling backslashed
      * characters.
      */
-    name = alloc((unsigned)(p - *arg + extra));
+    name = alloc(p - *arg + extra);
     if (name == NULL)
 	return FAIL;
     rettv->v_type = VAR_STRING;
@@ -5285,7 +5285,7 @@
     /*
      * Copy the string into allocated memory, handling '' to ' reduction.
      */
-    str = alloc((unsigned)((p - *arg) - reduce));
+    str = alloc((p - *arg) - reduce);
     if (str == NULL)
 	return FAIL;
     rettv->v_type = VAR_STRING;
@@ -6782,8 +6782,8 @@
     temp_result = eval_to_string(expr_start + 1, &nextcmd, FALSE);
     if (temp_result != NULL && nextcmd == NULL)
     {
-	retval = alloc((unsigned)(STRLEN(temp_result) + (expr_start - in_start)
-						   + (in_end - expr_end) + 1));
+	retval = alloc(STRLEN(temp_result) + (expr_start - in_start)
+						   + (in_end - expr_end) + 1);
 	if (retval != NULL)
 	{
 	    STRCPY(retval, in_start);
@@ -8130,8 +8130,7 @@
 	if (!valid_varname(varname))
 	    return;
 
-	v = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T)
-							  + STRLEN(varname)));
+	v = (dictitem_T *)alloc(sizeof(dictitem_T) + STRLEN(varname));
 	if (v == NULL)
 	    return;
 	STRCPY(v->di_key, varname);
@@ -8993,7 +8992,7 @@
 	    }
 	    else
 	    {
-		winvarname = alloc((unsigned)STRLEN(varname) + 3);
+		winvarname = alloc(STRLEN(varname) + 3);
 		if (winvarname != NULL)
 		{
 		    STRCPY(winvarname, "w:");
@@ -9056,7 +9055,7 @@
     char_u	*scriptname;
 
     /* Get the script file name: replace '#' with '/', append ".vim". */
-    scriptname = alloc((unsigned)(STRLEN(name) + 14));
+    scriptname = alloc(STRLEN(name) + 14);
     if (scriptname == NULL)
 	return FALSE;
     STRCPY(scriptname, "autoload/");
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 6ffd1a1..58ea710 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -4272,10 +4272,10 @@
 	}
 	count = (long)(foldend - foldstart + 1);
 	txt = NGETTEXT("+-%s%3ld line: ", "+-%s%3ld lines: ", count);
-	r = alloc((unsigned)(STRLEN(txt)
-		    + STRLEN(dashes)	    /* for %s */
-		    + 20		    /* for %3ld */
-		    + STRLEN(s)));	    /* concatenated */
+	r = alloc(STRLEN(txt)
+		    + STRLEN(dashes)	    // for %s
+		    + 20		    // for %3ld
+		    + STRLEN(s));	    // concatenated
 	if (r != NULL)
 	{
 	    sprintf((char *)r, txt, dashes, count);
@@ -10386,7 +10386,7 @@
 		if (q > p && !mch_isFullName(buf))
 		{
 		    /* symlink is relative to directory of argument */
-		    cpy = alloc((unsigned)(STRLEN(p) + STRLEN(buf) + 1));
+		    cpy = alloc(STRLEN(p) + STRLEN(buf) + 1);
 		    if (cpy != NULL)
 		    {
 			STRCPY(cpy, p);
@@ -11067,8 +11067,8 @@
 
     /* Make two search patterns: start/end (pat2, for in nested pairs) and
      * start/middle/end (pat3, for the top pair). */
-    pat2 = alloc((unsigned)(STRLEN(spat) + STRLEN(epat) + 17));
-    pat3 = alloc((unsigned)(STRLEN(spat) + STRLEN(mpat) + STRLEN(epat) + 25));
+    pat2 = alloc(STRLEN(spat) + STRLEN(epat) + 17);
+    pat3 = alloc(STRLEN(spat) + STRLEN(mpat) + STRLEN(epat) + 25);
     if (pat2 == NULL || pat3 == NULL)
 	goto theend;
     sprintf((char *)pat2, "\\m\\(%s\\m\\)\\|\\(%s\\m\\)", spat, epat);
@@ -11328,7 +11328,7 @@
 	{
 	    buf_T *save_curbuf = curbuf;
 
-	    bufvarname = alloc((unsigned)STRLEN(varname) + 3);
+	    bufvarname = alloc(STRLEN(varname) + 3);
 	    if (bufvarname != NULL)
 	    {
 		curbuf = buf;
@@ -11850,7 +11850,7 @@
 	save_curtab = curtab;
 	goto_tabpage_tp(tp, FALSE, FALSE);
 
-	tabvarname = alloc((unsigned)STRLEN(varname) + 3);
+	tabvarname = alloc(STRLEN(varname) + 3);
 	if (tabvarname != NULL)
 	{
 	    STRCPY(tabvarname, "t:");
@@ -13921,7 +13921,7 @@
 		++i;
 	    end = res + i;
 
-	    s = alloc((unsigned)(end - start + 1));
+	    s = alloc(end - start + 1);
 	    if (s == NULL)
 		goto errret;
 
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 040514c..7420d67 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -595,10 +595,10 @@
     }
 
     /* Allocate a buffer that can hold the longest line. */
-    sortbuf1 = alloc((unsigned)maxlen + 1);
+    sortbuf1 = alloc(maxlen + 1);
     if (sortbuf1 == NULL)
 	goto sortend;
-    sortbuf2 = alloc((unsigned)maxlen + 1);
+    sortbuf2 = alloc(maxlen + 1);
     if (sortbuf2 == NULL)
 	goto sortend;
 
@@ -1146,7 +1146,7 @@
 	    }
 	    len += (int)STRLEN(prevcmd);
 	}
-	if ((t = alloc((unsigned)len)) == NULL)
+	if ((t = alloc(len)) == NULL)
 	{
 	    vim_free(newcmd);
 	    return;
@@ -1209,7 +1209,7 @@
      */
     if (*p_shq != NUL)
     {
-	newcmd = alloc((unsigned)(STRLEN(prevcmd) + 2 * STRLEN(p_shq) + 1));
+	newcmd = alloc(STRLEN(prevcmd) + 2 * STRLEN(p_shq) + 1);
 	if (newcmd == NULL)
 	    return;
 	STRCPY(newcmd, p_shq);
@@ -3908,7 +3908,7 @@
 	    len = (int)STRLEN(command) + 3;
 	else
 	    len = 30;
-	p = alloc((unsigned)len);
+	p = alloc(len);
 	if (p != NULL)
 	{
 	    if (command != NULL)
@@ -5634,7 +5634,7 @@
 		     * too many calls to alloc()/free()).
 		     */
 		    new_start_len = needed_len + 50;
-		    if ((new_start = alloc_check(new_start_len)) == NULL)
+		    if ((new_start = alloc(new_start_len)) == NULL)
 			goto outofmem;
 		    *new_start = NUL;
 		    new_end = new_start;
@@ -5651,7 +5651,7 @@
 		    if (needed_len > (int)new_start_len)
 		    {
 			new_start_len = needed_len + 50;
-			if ((p1 = alloc_check(new_start_len)) == NULL)
+			if ((p1 = alloc(new_start_len)) == NULL)
 			{
 			    vim_free(new_start);
 			    goto outofmem;
@@ -7320,7 +7320,7 @@
 			    got_int = TRUE;
 			    break;
 			}
-			s = alloc((unsigned)(p2 - p1 + STRLEN(fname) + 2));
+			s = alloc(p2 - p1 + STRLEN(fname) + 2);
 			if (s == NULL)
 			{
 			    got_int = TRUE;
diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 5945203..c56e305 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -2366,7 +2366,7 @@
     }
     else
     {
-	buf = alloc((unsigned)(STRLEN(eap->arg) + 14));
+	buf = alloc(STRLEN(eap->arg) + 14);
 	if (buf != NULL)
 	{
 	    if (eap->forceit)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index f4f7639..c6e00be 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -5094,7 +5094,7 @@
     i = (int)(src - *cmdlinep) + (int)STRLEN(src + srclen) + len + 3;
     if (eap->nextcmd != NULL)
 	i += (int)STRLEN(eap->nextcmd);/* add space for next command */
-    if ((new_cmdline = alloc((unsigned)i)) == NULL)
+    if ((new_cmdline = alloc(i)) == NULL)
 	return NULL;			/* out of memory! */
 
     /*
@@ -6547,7 +6547,7 @@
     void
 alist_new(void)
 {
-    curwin->w_alist = (alist_T *)alloc((unsigned)sizeof(alist_T));
+    curwin->w_alist = (alist_T *)alloc(sizeof(alist_T));
     if (curwin->w_alist == NULL)
     {
 	curwin->w_alist = &global_alist;
@@ -6581,7 +6581,7 @@
      * expansion.  Also, the vimrc file isn't read yet, thus the user
      * can't set the options. */
     p_su = empty_option;
-    old_arg_files = (char_u **)alloc((unsigned)(sizeof(char_u *) * GARGCOUNT));
+    old_arg_files = (char_u **)alloc(sizeof(char_u *) * GARGCOUNT);
     if (old_arg_files != NULL)
     {
 	for (i = 0; i < GARGCOUNT; ++i)
@@ -8839,7 +8839,7 @@
 	}
 	if (len > 0)
 	{
-	    arg = alloc((unsigned)(STRLEN(eap->arg) + len + 1));
+	    arg = alloc(STRLEN(eap->arg) + len + 1);
 	    if (arg != NULL)
 	    {
 		len = 0;
@@ -9628,7 +9628,7 @@
 	}
 
 	/* allocate memory */
-	retval = alloc((unsigned)len + 1);
+	retval = alloc(len + 1);
 	if (retval == NULL)
 	    break;
     }
@@ -10622,7 +10622,7 @@
     for (p = sname; *p; ++p)
 	if (*p == '=' || vim_ispathsep(*p))
 	    ++len;
-    retval = alloc((unsigned)(STRLEN(sname) + len + STRLEN(p_vdir) + 9));
+    retval = alloc(STRLEN(sname) + len + STRLEN(p_vdir) + 9);
     if (retval != NULL)
     {
 	STRCPY(retval, p_vdir);
diff --git a/src/ex_eval.c b/src/ex_eval.c
index 63bca67..b1bb7e5 100644
--- a/src/ex_eval.c
+++ b/src/ex_eval.c
@@ -251,7 +251,7 @@
 	    while (*plist != NULL)
 		plist = &(*plist)->next;
 
-	    elem = (struct msglist *)alloc((unsigned)sizeof(struct msglist));
+	    elem = (struct msglist *)alloc(sizeof(struct msglist));
 	    if (elem == NULL)
 	    {
 		suppress_errthrow = TRUE;
@@ -519,7 +519,7 @@
 	}
     }
 
-    excp = (except_T *)alloc((unsigned)sizeof(except_T));
+    excp = (except_T *)alloc(sizeof(except_T));
     if (excp == NULL)
 	goto nomem;
 
@@ -1441,7 +1441,7 @@
 	    {
 		eslist_T	*elem;
 
-		elem = (eslist_T *)alloc((unsigned)sizeof(struct eslist_elem));
+		elem = (eslist_T *)alloc(sizeof(struct eslist_elem));
 		if (elem == NULL)
 		    emsg(_(e_outofmem));
 		else
diff --git a/src/ex_getln.c b/src/ex_getln.c
index ba3dc73..00193fe 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -4154,7 +4154,7 @@
 	    }
 	}
 
-	ss = alloc((unsigned)len + 1);
+	ss = alloc(len + 1);
 	if (ss)
 	    vim_strncpy(ss, xp->xp_files[0], (size_t)len);
 	findex = -1;			    /* next p_wc gets first one */
@@ -4362,7 +4362,7 @@
 {
     char_u	*p;
 
-    p = alloc((unsigned)(STRLEN(*pp) + 2));
+    p = alloc(STRLEN(*pp) + 2);
     if (p != NULL)
     {
 	p[0] = '\\';
@@ -5294,7 +5294,7 @@
 	    if (count == 0)
 		return OK;
 	    *num_file = count;
-	    *file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
+	    *file = (char_u **)alloc(count * sizeof(char_u *));
 	    if (*file == NULL)
 	    {
 		*file = (char_u **)"";
@@ -5636,7 +5636,7 @@
 
     for (i = 0; dirnames[i] != NULL; ++i)
     {
-	s = alloc((unsigned)(STRLEN(dirnames[i]) + pat_len + 7));
+	s = alloc(STRLEN(dirnames[i]) + pat_len + 7);
 	if (s == NULL)
 	{
 	    ga_clear_strings(&ga);
@@ -5650,7 +5650,7 @@
     if (flags & DIP_START) {
 	for (i = 0; dirnames[i] != NULL; ++i)
 	{
-	    s = alloc((unsigned)(STRLEN(dirnames[i]) + pat_len + 22));
+	    s = alloc(STRLEN(dirnames[i]) + pat_len + 22);
 	    if (s == NULL)
 	    {
 		ga_clear_strings(&ga);
@@ -5665,7 +5665,7 @@
     if (flags & DIP_OPT) {
 	for (i = 0; dirnames[i] != NULL; ++i)
 	{
-	    s = alloc((unsigned)(STRLEN(dirnames[i]) + pat_len + 20));
+	    s = alloc(STRLEN(dirnames[i]) + pat_len + 20);
 	    if (s == NULL)
 	    {
 		ga_clear_strings(&ga);
@@ -5728,7 +5728,7 @@
     pat_len = (int)STRLEN(pat);
     ga_init2(&ga, (int)sizeof(char *), 10);
 
-    s = alloc((unsigned)(pat_len + 26));
+    s = alloc(pat_len + 26);
     if (s == NULL)
     {
 	ga_clear_strings(&ga);
diff --git a/src/fileio.c b/src/fileio.c
index 57c5f47..e41f967 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -6203,7 +6203,7 @@
      */
     if (fname == NULL || *fname == NUL)
     {
-	retval = alloc((unsigned)(MAXPATHL + extlen + 3));
+	retval = alloc(MAXPATHL + extlen + 3);
 	if (retval == NULL)
 	    return NULL;
 	if (mch_dirname(retval, MAXPATHL) == FAIL ||
@@ -6222,7 +6222,7 @@
     else
     {
 	fnamelen = (int)STRLEN(fname);
-	retval = alloc((unsigned)(fnamelen + extlen + 3));
+	retval = alloc(fnamelen + extlen + 3);
 	if (retval == NULL)
 	    return NULL;
 	STRCPY(retval, fname);
@@ -6894,8 +6894,8 @@
 	{
 	    if (!helpmesg)
 		mesg2 = "";
-	    tbuf = (char *)alloc((unsigned)(STRLEN(path) + STRLEN(mesg)
-							+ STRLEN(mesg2) + 2));
+	    tbuf = (char *)alloc(STRLEN(path) + STRLEN(mesg)
+							  + STRLEN(mesg2) + 2);
 	    sprintf(tbuf, mesg, path);
 #ifdef FEAT_EVAL
 	    /* Set warningmsg here, before the unimportant and output-specific
@@ -7391,7 +7391,7 @@
 {
     char_u	*buf;
 
-    buf = alloc((unsigned)MAXPATHL + 2);
+    buf = alloc(MAXPATHL + 2);
     if (buf != NULL)
     {
 	if (vim_FullName(tempdir, buf, MAXPATHL, FALSE) == FAIL)
diff --git a/src/findfile.c b/src/findfile.c
index 3d3aec0..a6d164a 100644
--- a/src/findfile.c
+++ b/src/findfile.c
@@ -319,7 +319,7 @@
 	search_ctx = search_ctx_arg;
     else
     {
-	search_ctx = (ff_search_ctx_T*)alloc((unsigned)sizeof(ff_search_ctx_T));
+	search_ctx = (ff_search_ctx_T*)alloc(sizeof(ff_search_ctx_T));
 	if (search_ctx == NULL)
 	    goto error_return;
 	vim_memset(search_ctx, 0, sizeof(ff_search_ctx_T));
@@ -430,8 +430,7 @@
 	    walker++;
 
 	dircount = 1;
-	search_ctx->ffsc_stopdirs_v =
-				 (char_u **)alloc((unsigned)sizeof(char_u *));
+	search_ctx->ffsc_stopdirs_v = (char_u **)alloc(sizeof(char_u *));
 
 	if (search_ctx->ffsc_stopdirs_v != NULL)
 	{
@@ -926,8 +925,7 @@
 		 */
 		if (path_with_url(dirptrs[0]))
 		{
-		    stackp->ffs_filearray = (char_u **)
-					      alloc((unsigned)sizeof(char *));
+		    stackp->ffs_filearray = (char_u **)alloc(sizeof(char *));
 		    if (stackp->ffs_filearray != NULL
 			    && (stackp->ffs_filearray[0]
 				= vim_strsave(dirptrs[0])) != NULL)
@@ -1285,7 +1283,7 @@
     /*
      * if we reach this we didn't find a list and we have to allocate new list
      */
-    retptr = (ff_visited_list_hdr_T*)alloc((unsigned)sizeof(*retptr));
+    retptr = (ff_visited_list_hdr_T*)alloc(sizeof(*retptr));
     if (retptr == NULL)
 	return NULL;
 
@@ -1413,8 +1411,7 @@
     /*
      * New file/dir.  Add it to the list of visited files/dirs.
      */
-    vp = (ff_visited_T *)alloc((unsigned)(sizeof(ff_visited_T)
-						 + STRLEN(ff_expand_buffer)));
+    vp = (ff_visited_T *)alloc(sizeof(ff_visited_T) + STRLEN(ff_expand_buffer));
 
     if (vp != NULL)
     {
@@ -1462,7 +1459,7 @@
 {
     ff_stack_T	*new;
 
-    new = (ff_stack_T *)alloc((unsigned)sizeof(ff_stack_T));
+    new = (ff_stack_T *)alloc(sizeof(ff_stack_T));
     if (new == NULL)
 	return NULL;
 
@@ -2579,7 +2576,7 @@
     char_u	*paths = NULL;
     int		glob_flags = 0;
 
-    if ((curdir = alloc((unsigned)MAXPATHL)) == NULL)
+    if ((curdir = alloc(MAXPATHL)) == NULL)
 	return 0;
     mch_dirname(curdir, MAXPATHL);
 
diff --git a/src/fold.c b/src/fold.c
index 7446f7c..4cc7a47 100644
--- a/src/fold.c
+++ b/src/fold.c
@@ -1770,7 +1770,7 @@
 	/* Check if the line ends with an unclosed comment */
 	(void)skip_comment(line, FALSE, FALSE, &line_is_comment);
 #endif
-	newline = alloc((unsigned)(line_len + markerlen + STRLEN(cms) + 1));
+	newline = alloc(line_len + markerlen + STRLEN(cms) + 1);
 	if (newline == NULL)
 	    return;
 	STRCPY(newline, line);
@@ -1849,7 +1849,7 @@
 	    if (u_save(lnum - 1, lnum + 1) == OK)
 	    {
 		/* Make new line: text-before-marker + text-after-marker */
-		newline = alloc((unsigned)(STRLEN(line) - len + 1));
+		newline = alloc(STRLEN(line) - len + 1);
 		if (newline != NULL)
 		{
 		    STRNCPY(newline, line, p - line);
diff --git a/src/getchar.c b/src/getchar.c
index debad7e..0ebe715 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -3731,7 +3731,7 @@
     /*
      * Get here when adding a new entry to the maphash[] list or abbrlist.
      */
-    mp = (mapblock_T *)alloc((unsigned)sizeof(mapblock_T));
+    mp = (mapblock_T *)alloc(sizeof(mapblock_T));
     if (mp == NULL)
     {
 	retval = 4;	    /* no mem */
@@ -4375,7 +4375,7 @@
 
 	if (round == 1)
 	{
-	    *file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
+	    *file = (char_u **)alloc(count * sizeof(char_u *));
 	    if (*file == NULL)
 		return FAIL;
 	}
@@ -4695,7 +4695,7 @@
     /* Need a buffer to hold up to three times as much.  Four in case of an
      * illegal utf-8 byte:
      * 0xc0 -> 0xc3 0x80 -> 0xc3 K_SPECIAL KS_SPECIAL KE_FILLER */
-    res = alloc((unsigned)(STRLEN(p) * 4) + 1);
+    res = alloc(STRLEN(p) * 4 + 1);
     if (res != NULL)
     {
 	d = res;
diff --git a/src/gui.c b/src/gui.c
index 8568c20..8edc86c 100644
--- a/src/gui.c
+++ b/src/gui.c
@@ -2162,7 +2162,7 @@
 
     if (enc_utf8)
     {
-	buf = alloc((unsigned)(len * MB_MAXBYTES + 1));
+	buf = alloc(len * MB_MAXBYTES + 1);
 	if (buf == NULL)
 	    return OK; /* not much we could do here... */
 
@@ -2185,7 +2185,7 @@
     }
     else if (enc_dbcs == DBCS_JPNU)
     {
-	buf = alloc((unsigned)(len * 2 + 1));
+	buf = alloc(len * 2 + 1);
 	if (buf == NULL)
 	    return OK; /* not much we could do here... */
 
diff --git a/src/gui_at_fs.c b/src/gui_at_fs.c
index e65a266..c50816b 100644
--- a/src/gui_at_fs.c
+++ b/src/gui_at_fs.c
@@ -499,7 +499,7 @@
 					 (unsigned)(Alloc * sizeof(SFLogin)));
 	}
 	len = strlen(pw->pw_name);
-	entries[i].real = XtMalloc((unsigned) (len + 3));
+	entries[i].real = XtMalloc((unsigned)(len + 3));
 	(void) strcat(strcpy(entries[i].real, "~"), pw->pw_name);
 	entries[i].shown = entries[i].real;
 	entries[i].statDone = 1;
@@ -1307,7 +1307,7 @@
 			int len;
 
 			len = strlen(shown);
-			entry->shown = XtMalloc((unsigned) (len + 2));
+			entry->shown = XtMalloc((unsigned)(len + 2));
 			(void) strcpy(entry->shown, shown);
 			SFwriteStatChar(entry->shown, len, &statBuf);
 			entry->shown[len + 1] = 0;
@@ -2032,7 +2032,7 @@
 	result[i].statDone = 0;
 	str = dp->d_name;
 	len = strlen(str);
-	result[i].real = XtMalloc((unsigned) (len + 2));
+	result[i].real = XtMalloc((unsigned)(len + 2));
 	(void) strcat(strcpy(result[i].real, str), " ");
 	if (len > maxChars)
 	    maxChars = len;
diff --git a/src/gui_gtk.c b/src/gui_gtk.c
index 126eaf0..8537060 100644
--- a/src/gui_gtk.c
+++ b/src/gui_gtk.c
@@ -559,7 +559,7 @@
 	if (*psrc == '_')
 	    ++n_underscores;
 
-    buf = alloc((unsigned)(psrc - name + n_underscores + 1));
+    buf = alloc(psrc - name + n_underscores + 1);
     if (buf != NULL)
     {
 	pdest = buf;
diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 7d1d8d0..17ef6ea 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -429,7 +429,7 @@
      * into gui_argv.  Freed later in gui_mch_init().
      */
     gui_argc = 0;
-    gui_argv = (char **)alloc((unsigned)((*argc + 1) * sizeof(char *)));
+    gui_argv = (char **)alloc((*argc + 1) * sizeof(char *));
 
     g_return_if_fail(gui_argv != NULL);
 
@@ -1544,7 +1544,7 @@
 
     if (info == (guint)TARGET_VIM)
     {
-	tmpbuf = alloc((unsigned)length + 1);
+	tmpbuf = alloc(length + 1);
 	if (tmpbuf != NULL)
 	{
 	    tmpbuf[0] = motion_type;
@@ -1603,7 +1603,7 @@
 	int l = STRLEN(p_enc);
 
 	/* contents: motion_type 'encoding' NUL text */
-	tmpbuf = alloc((unsigned)length + l + 2);
+	tmpbuf = alloc(length + l + 2);
 	if (tmpbuf != NULL)
 	{
 	    tmpbuf[0] = motion_type;
@@ -2512,8 +2512,7 @@
 	    if (i == count)
 	    {
 		/* allocate an Atoms array which is one item longer */
-		new_atoms = (Atom *)alloc((unsigned)((count + 1)
-							     * sizeof(Atom)));
+		new_atoms = (Atom *)alloc((count + 1) * sizeof(Atom));
 		if (new_atoms != NULL)
 		{
 		    memcpy(new_atoms, existing_atoms, count * sizeof(Atom));
diff --git a/src/gui_motif.c b/src/gui_motif.c
index 4217339..1693df9 100644
--- a/src/gui_motif.c
+++ b/src/gui_motif.c
@@ -2538,7 +2538,7 @@
     for (p = buts; *p; ++p)
 	if (*p == DLG_BUTTON_SEP)
 	    ++butcount;
-    buttons = (Widget *)alloc((unsigned)(butcount * sizeof(Widget)));
+    buttons = (Widget *)alloc(butcount * sizeof(Widget));
     if (buttons == NULL)
     {
 	vim_free(buts);
diff --git a/src/gui_w32.c b/src/gui_w32.c
index 5961830..bf27386 100644
--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -3120,9 +3120,9 @@
     charset_name = charset_id2name((int)lf.lfCharSet);
     quality_name = quality_id2name((int)lf.lfQuality);
 
-    res = (char *)alloc((unsigned)(strlen(font_name) + 30
+    res = (char *)alloc(strlen(font_name) + 30
 		    + (charset_name == NULL ? 0 : strlen(charset_name) + 2)
-		    + (quality_name == NULL ? 0 : strlen(quality_name) + 2)));
+		    + (quality_name == NULL ? 0 : strlen(quality_name) + 2));
     if (res != NULL)
     {
 	p = res;
@@ -7718,7 +7718,7 @@
 	}
 
 	/* Allocate menu label and fill it in */
-	text = label = alloc((unsigned)len + 1);
+	text = label = alloc(len + 1);
 	if (label == NULL)
 	    break;
 
diff --git a/src/hashtab.c b/src/hashtab.c
index 6f2c2ca..54f7500 100644
--- a/src/hashtab.c
+++ b/src/hashtab.c
@@ -400,8 +400,7 @@
     else
     {
 	/* Allocate an array. */
-	newarray = (hashitem_T *)alloc((unsigned)
-					      (sizeof(hashitem_T) * newsize));
+	newarray = (hashitem_T *)alloc(sizeof(hashitem_T) * newsize);
 	if (newarray == NULL)
 	{
 	    /* Out of memory.  When there are NULL items still return OK.
diff --git a/src/if_cscope.c b/src/if_cscope.c
index 93a0458..4d57489 100644
--- a/src/if_cscope.c
+++ b/src/if_cscope.c
@@ -466,7 +466,7 @@
 cs_stat_emsg(char *fname)
 {
     char *stat_emsg = _("E563: stat(%s) error: %d");
-    char *buf = (char *)alloc((unsigned)strlen(stat_emsg) + MAXPATHL + 10);
+    char *buf = (char *)alloc(strlen(stat_emsg) + MAXPATHL + 10);
 
     if (buf != NULL)
     {
@@ -543,7 +543,7 @@
     /* if filename is a directory, append the cscope database name to it */
     if (S_ISDIR(statbuf.st_mode))
     {
-	fname2 = (char *)alloc((unsigned)(strlen(CSCOPE_DBFILE) + strlen(fname) + 2));
+	fname2 = (char *)alloc(strlen(CSCOPE_DBFILE) + strlen(fname) + 2);
 	if (fname2 == NULL)
 	    goto add_err;
 
@@ -769,7 +769,7 @@
 	while VIM_ISWHITE(*pat)
 	    ++pat;
 
-    if ((cmd = (char *)alloc((unsigned)(strlen(pat) + 2))) == NULL)
+    if ((cmd = (char *)alloc(strlen(pat) + 2)) == NULL)
 	return NULL;
 
     (void)sprintf(cmd, "%d%s", search, pat);
@@ -1121,7 +1121,7 @@
 	if (strchr(CSQF_FLAGS, *qfpos) == NULL)
 	{
 	    char *nf = _("E469: invalid cscopequickfix flag %c for %c");
-	    char *buf = (char *)alloc((unsigned)strlen(nf));
+	    char *buf = (char *)alloc(strlen(nf));
 
 	    /* strlen will be enough because we use chars */
 	    if (buf != NULL)
@@ -1192,7 +1192,7 @@
 	    return FALSE;
 	}
 
-	buf = (char *)alloc((unsigned)(strlen(opt) + strlen(pat) + strlen(nf)));
+	buf = (char *)alloc(strlen(opt) + strlen(pat) + strlen(nf));
 	if (buf == NULL)
 	    (void)emsg(nf);
 	else
@@ -1450,14 +1450,14 @@
 	    clear_csinfo(j);
     }
 
-    if ((csinfo[i].fname = (char *)alloc((unsigned)strlen(fname)+1)) == NULL)
+    if ((csinfo[i].fname = (char *)alloc(strlen(fname)+1)) == NULL)
 	return -1;
 
     (void)strcpy(csinfo[i].fname, (const char *)fname);
 
     if (ppath != NULL)
     {
-	if ((csinfo[i].ppath = (char *)alloc((unsigned)strlen(ppath) + 1)) == NULL)
+	if ((csinfo[i].ppath = (char *)alloc(strlen(ppath) + 1)) == NULL)
 	{
 	    VIM_CLEAR(csinfo[i].fname);
 	    return -1;
@@ -1468,7 +1468,7 @@
 
     if (flags != NULL)
     {
-	if ((csinfo[i].flags = (char *)alloc((unsigned)strlen(flags) + 1)) == NULL)
+	if ((csinfo[i].flags = (char *)alloc(strlen(flags) + 1)) == NULL)
 	{
 	    VIM_CLEAR(csinfo[i].fname);
 	    VIM_CLEAR(csinfo[i].ppath);
@@ -1820,7 +1820,7 @@
 			   &slno, &search)) == NULL)
 	       continue;
 
-	   context = (char *)alloc((unsigned)strlen(cntx)+5);
+	   context = (char *)alloc(strlen(cntx)+5);
 	   if (context == NULL)
 	       continue;
 
@@ -1975,7 +1975,7 @@
 
     assert(num_matches > 0);
 
-    if ((tbuf = (char *)alloc((unsigned)strlen(matches[0]) + 1)) == NULL)
+    if ((tbuf = (char *)alloc(strlen(matches[0]) + 1)) == NULL)
 	return;
 
     strcpy(tbuf, matches[0]);
@@ -2010,7 +2010,7 @@
 	 * by parsing matches[i] on the fly and placing stuff into buf
 	 * directly, but that's too much of a hassle
 	 */
-	if ((tbuf = (char *)alloc((unsigned)strlen(matches[idx]) + 1)) == NULL)
+	if ((tbuf = (char *)alloc(strlen(matches[idx]) + 1)) == NULL)
 	    continue;
 	(void)strcpy(tbuf, matches[idx]);
 
diff --git a/src/if_perlsfio.c b/src/if_perlsfio.c
index 528a1b4..31f0c6b 100644
--- a/src/if_perlsfio.c
+++ b/src/if_perlsfio.c
@@ -51,7 +51,7 @@
 {
     Sfdisc_t	*disc;
 
-    disc = (Sfdisc_t *)alloc((unsigned)sizeof(Sfdisc_t));
+    disc = (Sfdisc_t *)alloc(sizeof(Sfdisc_t));
     if (disc == NULL)
 	return NULL;
 
diff --git a/src/if_python3.c b/src/if_python3.c
index d93d633..823cfea 100644
--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -1629,7 +1629,7 @@
     Py_ssize_t len = strlen(str);
     char *tmp,*p;
 
-    tmp = (char *)alloc((unsigned)(len+1));
+    tmp = (char *)alloc(len + 1);
     p = tmp;
     if (p == NULL)
     {
diff --git a/src/if_xcmdsrv.c b/src/if_xcmdsrv.c
index 430548e..4b44126 100644
--- a/src/if_xcmdsrv.c
+++ b/src/if_xcmdsrv.c
@@ -441,7 +441,7 @@
      * Length must be computed exactly!
      */
     length = STRLEN(name) + STRLEN(p_enc) + STRLEN(cmd) + 14;
-    property = (char_u *)alloc((unsigned)length + 30);
+    property = (char_u *)alloc(length + 30);
 
     sprintf((char *)property, "%c%c%c-n %s%c-E %s%c-s %s",
 		      0, asExpr ? 'c' : 'k', 0, name, 0, p_enc, 0, cmd);
@@ -750,7 +750,7 @@
 	return -1;
 
     length = STRLEN(p_enc) + STRLEN(str) + 14;
-    if ((property = (char_u *)alloc((unsigned)length + 30)) != NULL)
+    if ((property = (char_u *)alloc(length + 30)) != NULL)
     {
 	sprintf((char *)property, "%cn%c-E %s%c-n %s%c-w %x",
 			    0, 0, p_enc, 0, str, 0, (unsigned int)commWindow);
diff --git a/src/indent.c b/src/indent.c
index 893ca29..8499b81 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -28,7 +28,7 @@
     int		len;
 
     cinw_len = (int)STRLEN(curbuf->b_p_cinw) + 1;
-    cinw_buf = alloc((unsigned)cinw_len);
+    cinw_buf = alloc(cinw_len);
     if (cinw_buf != NULL)
     {
 	line = skipwhite(line);
diff --git a/src/insexpand.c b/src/insexpand.c
index eeff64c..4a807f4 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -473,7 +473,7 @@
 					   ? actual_len : actual_compl_length;
 
 	// Allocate wide character array for the completion and fill it.
-	wca = (int *)alloc((unsigned)(actual_len * sizeof(int)));
+	wca = (int *)alloc(actual_len * sizeof(int));
 	if (wca != NULL)
 	{
 	    p = str;
@@ -1230,7 +1230,7 @@
 	if (pat_esc == NULL)
 	    goto theend;
 	len = STRLEN(pat_esc) + 10;
-	ptr = alloc((unsigned)len);
+	ptr = alloc(len);
 	if (ptr == NULL)
 	{
 	    vim_free(pat_esc);
diff --git a/src/main.c b/src/main.c
index 79b4844..e1ddbf7 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2300,7 +2300,7 @@
 			}
 			else
 			    a = argv[0];
-			p = alloc((unsigned)(STRLEN(a) + 4));
+			p = alloc(STRLEN(a) + 4);
 			if (p == NULL)
 			    mch_exit(2);
 			sprintf((char *)p, "so %s", a);
@@ -2526,7 +2526,7 @@
      * one. */
     if (parmp->n_commands > 0)
     {
-	p = alloc((unsigned)STRLEN(parmp->commands[0]) + 3);
+	p = alloc(STRLEN(parmp->commands[0]) + 3);
 	if (p != NULL)
 	{
 	    sprintf((char *)p, ":%s\r", parmp->commands[0]);
@@ -4263,7 +4263,7 @@
 		size_t	len = STRLEN(cmd) + STRLEN(err) + 5;
 		char_u	*msg;
 
-		msg = alloc((unsigned)len);
+		msg = alloc(len);
 		if (msg != NULL)
 		    vim_snprintf((char *)msg, len, "%s: \"%s\"", err, cmd);
 		*result = msg;
diff --git a/src/mbyte.c b/src/mbyte.c
index 411c3d9..c7de94e 100644
--- a/src/mbyte.c
+++ b/src/mbyte.c
@@ -4317,7 +4317,7 @@
     }
 
     /* copy "enc" to allocated memory, with room for two '-' */
-    r = alloc((unsigned)(STRLEN(enc) + 3));
+    r = alloc(STRLEN(enc) + 3);
     if (r != NULL)
     {
 	/* Make it all lower case and replace '_' with '-'. */
@@ -4603,7 +4603,7 @@
 	    /* Allocate enough room for most conversions.  When re-allocating
 	     * increase the buffer size. */
 	    len = len + fromlen * 2 + 40;
-	    p = alloc((unsigned)len);
+	    p = alloc(len);
 	    if (p != NULL && done > 0)
 		mch_memmove(p, result, done);
 	    vim_free(result);
diff --git a/src/memfile.c b/src/memfile.c
index 1827bcf..9a1b4cb 100644
--- a/src/memfile.c
+++ b/src/memfile.c
@@ -130,7 +130,7 @@
     struct STATFS	stf;
 #endif
 
-    if ((mfp = (memfile_T *)alloc((unsigned)sizeof(memfile_T))) == NULL)
+    if ((mfp = (memfile_T *)alloc(sizeof(memfile_T))) == NULL)
 	return NULL;
 
     if (fname == NULL)	    /* no file for this memfile, use memory only */
@@ -893,7 +893,7 @@
 {
     bhdr_T	*hp;
 
-    if ((hp = (bhdr_T *)alloc((unsigned)sizeof(bhdr_T))) != NULL)
+    if ((hp = (bhdr_T *)alloc(sizeof(bhdr_T))) != NULL)
     {
 	if ((hp->bh_data = (char_u *)alloc(mfp->mf_page_size * page_count))
 								      == NULL)
@@ -1108,7 +1108,7 @@
     if (hp->bh_bnum >= 0)		    /* it's already positive */
 	return OK;
 
-    if ((np = (NR_TRANS *)alloc((unsigned)sizeof(NR_TRANS))) == NULL)
+    if ((np = (NR_TRANS *)alloc(sizeof(NR_TRANS))) == NULL)
 	return FAIL;
 
 /*
diff --git a/src/memline.c b/src/memline.c
index 46b5ce8..35b524e 100644
--- a/src/memline.c
+++ b/src/memline.c
@@ -1189,7 +1189,7 @@
      * Allocate a buffer structure for the swap file that is used for recovery.
      * Only the memline and crypt information in it are really used.
      */
-    buf = (buf_T *)alloc((unsigned)sizeof(buf_T));
+    buf = (buf_T *)alloc(sizeof(buf_T));
     if (buf == NULL)
 	goto theend;
 
@@ -1787,7 +1787,7 @@
      * Do the loop for every directory in 'directory'.
      * First allocate some memory to put the directory name in.
      */
-    dir_name = alloc((unsigned)STRLEN(p_dir) + 1);
+    dir_name = alloc(STRLEN(p_dir) + 1);
     dirp = p_dir;
     while (dir_name != NULL && *dirp)
     {
@@ -1913,7 +1913,7 @@
 	    {
 		if (mch_stat((char *)swapname, &st) != -1)	    /* It exists! */
 		{
-		    files = (char_u **)alloc((unsigned)sizeof(char_u *));
+		    files = (char_u **)alloc(sizeof(char_u *));
 		    if (files != NULL)
 		    {
 			files[0] = swapname;
@@ -2015,7 +2015,7 @@
     f = fix_fname(name != NULL ? name : (char_u *)"");
     if (f != NULL)
     {
-	s = alloc((unsigned)(STRLEN(f) + 1));
+	s = alloc(STRLEN(f) + 1);
 	if (s != NULL)
 	{
 	    STRCPY(s, f);
@@ -2674,7 +2674,7 @@
 	    if (new_prop_count == 0)
 		return;  // nothing to do
 	    new_len = *len + new_prop_count * sizeof(textprop_T);
-	    new_line = alloc((unsigned)new_len);
+	    new_line = alloc(new_len);
 	    if (new_line == NULL)
 		return;
 	    mch_memmove(new_line, *line, *len);
@@ -4201,7 +4201,7 @@
     {
 	CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */
 
-	newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) *
+	newstack = (infoptr_T *)alloc(sizeof(infoptr_T) *
 					(buf->b_ml.ml_stack_size + STACK_INCR));
 	if (newstack == NULL)
 	    return -1;
@@ -4596,7 +4596,7 @@
      * Isolate a directory name from *dirp and put it in dir_name.
      * First allocate some memory to put the directory name in.
      */
-    dir_name = alloc((unsigned)STRLEN(*dirp) + 1);
+    dir_name = alloc(STRLEN(*dirp) + 1);
     if (dir_name == NULL)
 	*dirp = NULL;
     else
@@ -4920,9 +4920,9 @@
 		    {
 			char_u	*name;
 
-			name = alloc((unsigned)(STRLEN(fname)
+			name = alloc(STRLEN(fname)
 				+ STRLEN(_("Swap file \""))
-				+ STRLEN(_("\" already exists!")) + 5));
+				+ STRLEN(_("\" already exists!")) + 5);
 			if (name != NULL)
 			{
 			    STRCPY(name, _("Swap file \""));
@@ -5371,8 +5371,8 @@
 	return;
     if (buf->b_ml.ml_chunksize == NULL)
     {
-	buf->b_ml.ml_chunksize = (chunksize_T *)
-				  alloc((unsigned)sizeof(chunksize_T) * 100);
+	buf->b_ml.ml_chunksize =
+			       (chunksize_T *)alloc(sizeof(chunksize_T) * 100);
 	if (buf->b_ml.ml_chunksize == NULL)
 	{
 	    buf->b_ml.ml_usedchunks = -1;
diff --git a/src/menu.c b/src/menu.c
index 6e0c02e..1ff45b9 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -694,7 +694,7 @@
 		 * \'s and ^V's stripped out. But menu_path is a "raw"
 		 * string, so we must correct for special characters.
 		 */
-		tearpath = alloc((unsigned int)STRLEN(menu_path) + TEAR_LEN + 2);
+		tearpath = alloc(STRLEN(menu_path) + TEAR_LEN + 2);
 		if (tearpath != NULL)
 		{
 		    char_u  *s;
@@ -780,7 +780,7 @@
 
 		if (c != 0)
 		{
-		    menu->strings[i] = alloc((unsigned)(STRLEN(call_data) + 5 ));
+		    menu->strings[i] = alloc(STRLEN(call_data) + 5);
 		    if (menu->strings[i] != NULL)
 		    {
 			menu->strings[i][0] = c;
@@ -1316,7 +1316,7 @@
 	menu = root_menu;
 	if (after_dot != arg)
 	{
-	    path_name = alloc((unsigned)(after_dot - arg));
+	    path_name = alloc(after_dot - arg);
 	    if (path_name == NULL)
 		return NULL;
 	    vim_strncpy(path_name, arg, after_dot - arg - 1);
diff --git a/src/message.c b/src/message.c
index 0ddff8b..f1801c3 100644
--- a/src/message.c
+++ b/src/message.c
@@ -437,7 +437,7 @@
     if (sourcing_name != NULL && other_sourcing_name())
     {
 	p = (char_u *)_("Error detected while processing %s:");
-	Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p)));
+	Buf = alloc(STRLEN(sourcing_name) + STRLEN(p));
 	if (Buf != NULL)
 	    sprintf((char *)Buf, (char *)p, sourcing_name);
 	return Buf;
@@ -462,7 +462,7 @@
 	    && sourcing_lnum != 0)
     {
 	p = (char_u *)_("line %4ld:");
-	Buf = alloc((unsigned)(STRLEN(p) + 20));
+	Buf = alloc(STRLEN(p) + 20);
 	if (Buf != NULL)
 	    sprintf((char *)Buf, (char *)p, (long)sourcing_lnum);
 	return Buf;
diff --git a/src/misc1.c b/src/misc1.c
index 550a727..bb82f09 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -2180,7 +2180,7 @@
 		pend1 = remove_tail(p, pend, (char_u *)"MacOS");
 		if (pend1 != pend)
 		{
-		    pnew = alloc((unsigned)(pend1 - p) + 15);
+		    pnew = alloc(pend1 - p + 15);
 		    if (pnew != NULL)
 		    {
 			STRNCPY(pnew, p, (pend1 - p));
@@ -2341,7 +2341,7 @@
      * Putenv does not copy the string, it has to remain
      * valid.  The allocated memory will never be freed.
      */
-    envbuf = alloc((unsigned)(STRLEN(name) + STRLEN(val) + 2));
+    envbuf = alloc(STRLEN(name) + STRLEN(val) + 2);
     if (envbuf != NULL)
     {
 	sprintf((char *)envbuf, "%s=%s", name, val);
@@ -3019,7 +3019,7 @@
 {
     char_u  *dest;
 
-    dest = alloc((unsigned)(STRLEN(fname1) + STRLEN(fname2) + 3));
+    dest = alloc(STRLEN(fname1) + STRLEN(fname2) + 3);
     if (dest != NULL)
     {
 	STRCPY(dest, fname1);
@@ -3040,7 +3040,7 @@
     char_u  *dest;
     size_t  l = STRLEN(str1);
 
-    dest = alloc((unsigned)(l + STRLEN(str2) + 1L));
+    dest = alloc(l + STRLEN(str2) + 1L);
     if (dest != NULL)
     {
 	STRCPY(dest, str1);
@@ -3076,7 +3076,7 @@
     if (fname == NULL)
 	return NULL;
 
-    buf = alloc((unsigned)MAXPATHL);
+    buf = alloc(MAXPATHL);
     if (buf != NULL)
     {
 	if (vim_FullName(fname, buf, MAXPATHL, force) != FAIL)
@@ -4231,7 +4231,7 @@
     if (ga_grow(gap, 1) == FAIL)
 	return;
 
-    p = alloc((unsigned)(STRLEN(f) + 1 + isdir));
+    p = alloc(STRLEN(f) + 1 + isdir);
     if (p == NULL)
 	return;
 
diff --git a/src/misc2.c b/src/misc2.c
index dac66ff..ddb677c 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -711,7 +711,7 @@
 }
 
     static void
-mem_pre_alloc_l(long_u *sizep)
+mem_pre_alloc_l(size_t *sizep)
 {
     *sizep += sizeof(size_t);
 }
@@ -796,7 +796,7 @@
 
 #ifdef FEAT_EVAL
     int
-alloc_does_fail(long_u size)
+alloc_does_fail(size_t size)
 {
     if (alloc_fail_countdown == 0)
     {
@@ -818,39 +818,39 @@
 #define KEEP_ROOM_KB (KEEP_ROOM / 1024L)
 
 /*
- * Note: if unsigned is 16 bits we can only allocate up to 64K with alloc().
- * Use lalloc for larger blocks.
+ * The normal way to allocate memory.  This handles an out-of-memory situation
+ * as well as possible, still returns NULL when we're completely out.
  */
     char_u *
-alloc(unsigned size)
+alloc(size_t size)
 {
-    return (lalloc((long_u)size, TRUE));
+    return lalloc(size, TRUE);
 }
 
 /*
  * alloc() with an ID for alloc_fail().
  */
     char_u *
-alloc_id(unsigned size, alloc_id_T id UNUSED)
+alloc_id(size_t size, alloc_id_T id UNUSED)
 {
 #ifdef FEAT_EVAL
-    if (alloc_fail_id == id && alloc_does_fail((long_u)size))
+    if (alloc_fail_id == id && alloc_does_fail(size))
 	return NULL;
 #endif
-    return (lalloc((long_u)size, TRUE));
+    return lalloc(size, TRUE);
 }
 
 /*
  * Allocate memory and set all bytes to zero.
  */
     char_u *
-alloc_clear(unsigned size)
+alloc_clear(size_t size)
 {
     char_u *p;
 
-    p = lalloc((long_u)size, TRUE);
+    p = lalloc(size, TRUE);
     if (p != NULL)
-	(void)vim_memset(p, 0, (size_t)size);
+	(void)vim_memset(p, 0, size);
     return p;
 }
 
@@ -858,44 +858,26 @@
  * Same as alloc_clear() but with allocation id for testing
  */
     char_u *
-alloc_clear_id(unsigned size, alloc_id_T id UNUSED)
+alloc_clear_id(size_t size, alloc_id_T id UNUSED)
 {
 #ifdef FEAT_EVAL
-    if (alloc_fail_id == id && alloc_does_fail((long_u)size))
+    if (alloc_fail_id == id && alloc_does_fail(size))
 	return NULL;
 #endif
     return alloc_clear(size);
 }
 
 /*
- * alloc() with check for maximum line length
- */
-    char_u *
-alloc_check(unsigned size)
-{
-#if !defined(UNIX)
-    if (sizeof(int) == 2 && size > 0x7fff)
-    {
-	/* Don't hide this message */
-	emsg_silent = 0;
-	emsg(_("E340: Line is becoming too long"));
-	return NULL;
-    }
-#endif
-    return (lalloc((long_u)size, TRUE));
-}
-
-/*
  * Allocate memory like lalloc() and set all bytes to zero.
  */
     char_u *
-lalloc_clear(long_u size, int message)
+lalloc_clear(size_t size, int message)
 {
     char_u *p;
 
     p = (lalloc(size, message));
     if (p != NULL)
-	(void)vim_memset(p, 0, (size_t)size);
+	(void)vim_memset(p, 0, size);
     return p;
 }
 
@@ -904,21 +886,21 @@
  * This is used often, KEEP IT FAST!
  */
     char_u *
-lalloc(long_u size, int message)
+lalloc(size_t size, int message)
 {
     char_u	*p;		    /* pointer to new storage space */
     static int	releasing = FALSE;  /* don't do mf_release_all() recursive */
     int		try_again;
 #if defined(HAVE_AVAIL_MEM)
-    static long_u allocated = 0;    /* allocated since last avail check */
+    static size_t allocated = 0;    /* allocated since last avail check */
 #endif
 
-    /* Safety check for allocating zero bytes */
+    // Safety check for allocating zero bytes
     if (size == 0)
     {
-	/* Don't hide this message */
+	// Don't hide this message
 	emsg_silent = 0;
-	siemsg(_("E341: Internal error: lalloc(%ld, )"), size);
+	iemsg(_("E341: Internal error: lalloc(0, )"));
 	return NULL;
     }
 
@@ -939,7 +921,7 @@
 	 *    allocating KEEP_ROOM amount of memory.
 	 * 3. Strict check for available memory: call mch_avail_mem()
 	 */
-	if ((p = (char_u *)malloc((size_t)size)) != NULL)
+	if ((p = (char_u *)malloc(size)) != NULL)
 	{
 #ifndef HAVE_AVAIL_MEM
 	    /* 1. No check for available memory: Just return. */
@@ -983,7 +965,7 @@
 
 theend:
 #ifdef MEM_PROFILE
-    mem_post_alloc((void **)&p, (size_t)size);
+    mem_post_alloc((void **)&p, size);
 #endif
     return p;
 }
@@ -993,13 +975,13 @@
  */
 #if defined(FEAT_SIGNS) || defined(PROTO)
     char_u *
-lalloc_id(long_u size, int message, alloc_id_T id UNUSED)
+lalloc_id(size_t size, int message, alloc_id_T id UNUSED)
 {
 #ifdef FEAT_EVAL
     if (alloc_fail_id == id && alloc_does_fail(size))
 	return NULL;
 #endif
-    return (lalloc((long_u)size, message));
+    return (lalloc(size, message));
 }
 #endif
 
@@ -1028,7 +1010,7 @@
 * Did_outofmem_msg is reset when a character is read.
 */
     void
-do_outofmem_msg(long_u size)
+do_outofmem_msg(size_t size)
 {
     if (!did_outofmem_msg)
     {
@@ -1039,7 +1021,7 @@
 	 * message fails, e.g. when setting v:errmsg. */
 	did_outofmem_msg = TRUE;
 
-	semsg(_("E342: Out of memory!  (allocating %lu bytes)"), size);
+	semsg(_("E342: Out of memory!  (allocating %lu bytes)"), (long_u)size);
     }
 }
 
@@ -1288,12 +1270,12 @@
 vim_strsave(char_u *string)
 {
     char_u	*p;
-    unsigned	len;
+    size_t	len;
 
-    len = (unsigned)STRLEN(string) + 1;
+    len = STRLEN(string) + 1;
     p = alloc(len);
     if (p != NULL)
-	mch_memmove(p, string, (size_t)len);
+	mch_memmove(p, string, len);
     return p;
 }
 
@@ -1308,7 +1290,7 @@
 {
     char_u	*p;
 
-    p = alloc((unsigned)(len + 1));
+    p = alloc((size_t)(len + 1));
     if (p != NULL)
     {
 	STRNCPY(p, string, len);
@@ -1322,12 +1304,12 @@
  * Returns NULL when out of memory.
  */
     char_u *
-vim_memsave(char_u *p, int len)
+vim_memsave(char_u *p, size_t len)
 {
-    char_u *ret = alloc((unsigned)len);
+    char_u *ret = alloc(len);
 
     if (ret != NULL)
-	mch_memmove(ret, p, (size_t)len);
+	mch_memmove(ret, p, len);
     return ret;
 }
 
@@ -1622,7 +1604,7 @@
 		newl = utf_char2len(uc);
 		if (newl != l)
 		{
-		    s = alloc((unsigned)STRLEN(res) + 1 + newl - l);
+		    s = alloc(STRLEN(res) + 1 + newl - l);
 		    if (s == NULL)
 		    {
 			vim_free(res);
@@ -1689,7 +1671,7 @@
 		newl = utf_char2len(lc);
 		if (newl != l)
 		{
-		    s = alloc((unsigned)STRLEN(res) + 1 + newl - l);
+		    s = alloc(STRLEN(res) + 1 + newl - l);
 		    if (s == NULL)
 		    {
 			vim_free(res);
@@ -2077,7 +2059,7 @@
 	    n = gap->ga_growsize;
 	new_len = gap->ga_itemsize * (gap->ga_len + n);
 	pp = (gap->ga_data == NULL)
-	      ? alloc((unsigned)new_len) : vim_realloc(gap->ga_data, new_len);
+	      ? alloc(new_len) : vim_realloc(gap->ga_data, new_len);
 	if (pp == NULL)
 	    return FAIL;
 	old_len = gap->ga_itemsize * gap->ga_maxlen;
@@ -3261,7 +3243,7 @@
 		if (ecmd == NULL)
 		    ecmd = cmd;
 	    }
-	    ncmd = alloc((unsigned)(STRLEN(ecmd) + STRLEN(p_sxq) * 2 + 1));
+	    ncmd = alloc(STRLEN(ecmd) + STRLEN(p_sxq) * 2 + 1);
 	    if (ncmd != NULL)
 	    {
 		STRCPY(ncmd, p_sxq);
@@ -3896,7 +3878,7 @@
     int		i, j;
     int		gap;
 
-    buf = alloc((unsigned)elm_size);
+    buf = alloc(elm_size);
     if (buf == NULL)
 	return;
 
@@ -4073,7 +4055,7 @@
 	    if (moreenv() < 0)
 		return -1;
 	}
-	p = (char *)alloc((unsigned)(strlen(string) + 1));
+	p = (char *)alloc(strlen(string) + 1);
 	if (p == NULL)		/* not enough core */
 	    return -1;
 	environ[i + 1] = 0;	/* new end of env. */
@@ -4121,13 +4103,13 @@
 	;
 
     esize = i + EXTRASIZE + 1;
-    env = (char **)alloc((unsigned)(esize * sizeof (elem)));
+    env = (char **)alloc(esize * sizeof (elem));
     if (env == NULL)
 	return -1;
 
     for (i = 0; environ[i]; i++)
     {
-	elem = (char *)alloc((unsigned)(strlen(environ[i]) + 1));
+	elem = (char *)alloc(strlen(environ[i]) + 1);
 	if (elem == NULL)
 	    return -1;
 	env[i] = elem;
@@ -4310,7 +4292,7 @@
     int		c;
 
     /* allocate memory */
-    str = alloc((unsigned)cnt + 1);
+    str = alloc(cnt + 1);
     if (str != NULL)
     {
 	/* Read the string.  Quit when running into the EOF. */
@@ -4593,7 +4575,7 @@
 		}
 	    }
 
-	    *argv = (char **)alloc((unsigned)((*argc + 4) * sizeof(char *)));
+	    *argv = (char **)alloc((*argc + 4) * sizeof(char *));
 	    if (*argv == NULL)	    /* out of memory */
 		return FAIL;
 	}
diff --git a/src/netbeans.c b/src/netbeans.c
index 7c2ab42..f1ba01a 100644
--- a/src/netbeans.c
+++ b/src/netbeans.c
@@ -790,7 +790,7 @@
 
     nbdebug(("REP %d: %s\n", cmdno, (char *)result));
 
-    reply = alloc((unsigned)STRLEN(result) + 32);
+    reply = alloc(STRLEN(result) + 32);
     sprintf((char *)reply, "%d %s\n", cmdno, (char *)result);
     nb_send((char *)reply, "nb_reply_text");
 
@@ -819,7 +819,7 @@
     static char_u *
 nb_quote(char_u *txt)
 {
-    char_u *buf = alloc((unsigned)(2 * STRLEN(txt) + 1));
+    char_u *buf = alloc(2 * STRLEN(txt) + 1);
     char_u *p = txt;
     char_u *q = buf;
 
@@ -951,7 +951,7 @@
 
     len_first = (int)STRLEN(ml_get(first));
     len_other = (int)STRLEN(ml_get(other));
-    p = alloc((unsigned)(len_first + len_other + 1));
+    p = alloc(len_first + len_other + 1);
     if (p != NULL)
     {
       mch_memmove(p, ml_get(first), len_first);
@@ -1084,8 +1084,7 @@
 	    {
 		len = get_buf_size(buf->bufp);
 		nlines = buf->bufp->b_ml.ml_line_count;
-		text = alloc((unsigned)((len > 0)
-						 ? ((len + nlines) * 2) : 4));
+		text = alloc((len > 0) ? ((len + nlines) * 2) : 4);
 		if (text == NULL)
 		{
 		    nbdebug(("    nb_do_cmd: getText has null text field\n"));
@@ -1395,8 +1394,7 @@
 			char_u *newline;
 
 			/* Insert halfway a line. */
-			newline = alloc_check(
-				       (unsigned)(STRLEN(oldline) + len + 1));
+			newline = alloc(STRLEN(oldline) + len + 1);
 			if (newline != NULL)
 			{
 			    mch_memmove(newline, oldline, (size_t)pos->col);
diff --git a/src/ops.c b/src/ops.c
index 4d26924..f1e6a63 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -456,7 +456,7 @@
 	/* if we're splitting a TAB, allow for it */
 	bd.textcol -= bd.pre_whitesp_c - (bd.startspaces != 0);
 	len = (int)STRLEN(bd.textstart) + 1;
-	newp = alloc_check((unsigned)(bd.textcol + i + j + len));
+	newp = alloc(bd.textcol + i + j + len);
 	if (newp == NULL)
 	    return;
 	vim_memset(newp, NUL, (size_t)(bd.textcol + i + j + len));
@@ -550,7 +550,7 @@
 		       + fill
 		       + (unsigned)STRLEN(non_white) + 1;
 
-	newp = alloc_check(new_line_len);
+	newp = alloc(new_line_len);
 	if (newp == NULL)
 	    return;
 	mch_memmove(newp, oldp, (size_t)(verbatim_copy_end - oldp));
@@ -644,7 +644,7 @@
 	    count -= off;
 	}
 
-	newp = alloc_check((unsigned)(STRLEN(oldp)) + s_len + count + 1);
+	newp = alloc(STRLEN(oldp) + s_len + count + 1);
 	if (newp == NULL)
 	    continue;
 
@@ -1003,7 +1003,7 @@
 #endif
 
     get_yank_register(name, 0);
-    reg = (yankreg_T *)alloc((unsigned)sizeof(yankreg_T));
+    reg = (yankreg_T *)alloc(sizeof(yankreg_T));
     if (reg != NULL)
     {
 	*reg = *y_current;
@@ -1013,8 +1013,7 @@
 	    if (reg->y_size == 0)
 		reg->y_array = NULL;
 	    else
-		reg->y_array = (char_u **)alloc((unsigned)(sizeof(char_u *)
-							      * reg->y_size));
+		reg->y_array = (char_u **)alloc(sizeof(char_u *) * reg->y_size);
 	    if (reg->y_array != NULL)
 	    {
 		for (i = 0; i < reg->y_size; ++i)
@@ -1177,7 +1176,7 @@
     {
 	free_yank_all();
 	if ((y_current->y_array =
-			(char_u **)alloc((unsigned)sizeof(char_u *))) == NULL)
+			(char_u **)alloc(sizeof(char_u *))) == NULL)
 	{
 	    vim_free(p);
 	    return FAIL;
@@ -1921,7 +1920,7 @@
 	    // Thus the number of characters may increase!
 	    n = bd.textlen - bd.startspaces - bd.endspaces;
 	    oldp = ml_get(lnum);
-	    newp = alloc_check((unsigned)STRLEN(oldp) + 1 - n);
+	    newp = alloc(STRLEN(oldp) + 1 - n);
 	    if (newp == NULL)
 		continue;
 	    /* copy up to deleted part */
@@ -2227,7 +2226,7 @@
 
 	    oldp = ml_get_curline();
 	    oldlen = STRLEN(oldp);
-	    newp = alloc_check((unsigned)oldlen + 1 + n);
+	    newp = alloc(oldlen + 1 + n);
 	    if (newp == NULL)
 		continue;
 	    vim_memset(newp, NUL, (size_t)(oldlen + 1 + n));
@@ -2260,8 +2259,7 @@
 	    else
 	    {
 		/* Replacing with \r or \n means splitting the line. */
-		after_p = alloc_check(
-				   (unsigned)(oldlen + 1 + n - STRLEN(newp)));
+		after_p = alloc(oldlen + 1 + n - STRLEN(newp));
 		if (after_p != NULL)
 		    STRMOVE(after_p, oldp);
 	    }
@@ -2869,7 +2867,7 @@
 	{
 	    /* Subsequent calls to ml_get() flush the firstline data - take a
 	     * copy of the inserted text.  */
-	    if ((ins_text = alloc_check((unsigned)(ins_len + 1))) != NULL)
+	    if ((ins_text = alloc(ins_len + 1)) != NULL)
 	    {
 		vim_strncpy(ins_text, firstline + bd.textcol, (size_t)ins_len);
 		for (linenr = oap->start.lnum + 1; linenr <= oap->end.lnum;
@@ -2890,8 +2888,7 @@
 			else
 			    vpos.coladd = 0;
 			oldp = ml_get(linenr);
-			newp = alloc_check((unsigned)(STRLEN(oldp)
-						 + vpos.coladd + ins_len + 1));
+			newp = alloc(STRLEN(oldp) + vpos.coladd + ins_len + 1);
 			if (newp == NULL)
 			    continue;
 			/* copy up to block start */
@@ -3494,8 +3491,7 @@
 		}
 		if (y_array != NULL)
 		    break;
-		y_array = (char_u **)alloc((unsigned)
-						 (y_size * sizeof(char_u *)));
+		y_array = (char_u **)alloc((y_size * sizeof(char_u *)));
 		if (y_array == NULL)
 		    goto end;
 	    }
@@ -3741,7 +3737,7 @@
 
 	    /* insert the new text */
 	    totlen = count * (yanklen + spaces) + bd.startspaces + bd.endspaces;
-	    newp = alloc_check((unsigned)totlen + oldlen + 1);
+	    newp = alloc(totlen + oldlen + 1);
 	    if (newp == NULL)
 		break;
 	    /* copy part up to cursor to new line */
@@ -3868,7 +3864,7 @@
 			lnum++;
 			continue;
 		    }
-		    newp = alloc_check((unsigned)(STRLEN(oldp) + totlen + 1));
+		    newp = alloc(STRLEN(oldp) + totlen + 1);
 		    if (newp == NULL)
 			goto end;	/* alloc() gave an error message */
 		    mch_memmove(newp, oldp, (size_t)col);
@@ -3920,7 +3916,7 @@
 		    lnum = new_cursor.lnum;
 		    ptr = ml_get(lnum) + col;
 		    totlen = (int)STRLEN(y_array[y_size - 1]);
-		    newp = alloc_check((unsigned)(STRLEN(ptr) + totlen + 1));
+		    newp = alloc(STRLEN(ptr) + totlen + 1);
 		    if (newp == NULL)
 			goto error;
 		    STRCPY(newp, y_array[y_size - 1]);
@@ -3930,7 +3926,7 @@
 		    vim_free(newp);
 
 		    oldp = ml_get(lnum);
-		    newp = alloc_check((unsigned)(col + yanklen + 1));
+		    newp = alloc(col + yanklen + 1);
 		    if (newp == NULL)
 			goto error;
 					    /* copy first part of line */
@@ -4563,7 +4559,7 @@
     col = sumsize - currsize - spaces[count - 1];
 
     /* allocate the space for the new line */
-    newp = alloc_check((unsigned)(sumsize + 1));
+    newp = alloc(sumsize + 1);
     cend = newp + sumsize;
     *cend = 0;
 
@@ -5880,7 +5876,7 @@
 	 * When there are many leading zeros it could be very long.
 	 * Allocate a bit too much.
 	 */
-	buf1 = alloc((unsigned)length + NUMBUFLEN);
+	buf1 = alloc(length + NUMBUFLEN);
 	if (buf1 == NULL)
 	    goto theend;
 	ptr = buf1;
@@ -6055,7 +6051,7 @@
 	 */
 	if (set_prev)
 	    y_previous = y_current;
-	array = (char_u **)alloc((unsigned)(limit * sizeof(char_u *)));
+	array = (char_u **)alloc(limit * sizeof(char_u *));
 	str = skipwhite(skiptowhite(str));
 	if (STRNCMP(str, "CHAR", 4) == 0)
 	    new_type = MCHAR;
@@ -6076,7 +6072,7 @@
 	    if (size == limit)
 	    {
 		char_u **new_array = (char_u **)
-			      alloc((unsigned)(limit * 2 * sizeof(char_u *)));
+					   alloc(limit * 2 * sizeof(char_u *));
 
 		if (new_array == NULL)
 		{
@@ -6116,8 +6112,7 @@
 	else
 	{
 	    /* Move the lines from array[] to y_array[]. */
-	    y_current->y_array =
-			(char_u **)alloc((unsigned)(size * sizeof(char_u *)));
+	    y_current->y_array = (char_u **)alloc(size * sizeof(char_u *));
 	    for (i = 0; i < size; i++)
 	    {
 		if (y_current->y_array == NULL)
@@ -6214,7 +6209,7 @@
 	y_ptr->y_array = NULL;
 	return;
     }
-    y_ptr->y_array = (char_u **)alloc((unsigned)(linecount * sizeof(char_u *)));
+    y_ptr->y_array = (char_u **)alloc(linecount * sizeof(char_u *));
     if (y_ptr->y_array == NULL)
     {
 	y_ptr->y_size = 0; // ensure object state is consistent
@@ -7145,7 +7140,7 @@
 	    }
 	    else
 		extra = 0;
-	    s = alloc((unsigned)(i + extra + 1));
+	    s = alloc(i + extra + 1);
 	    if (s == NULL)
 		break;
 	    if (extra)
diff --git a/src/option.c b/src/option.c
index 39ef052..42a252e 100644
--- a/src/option.c
+++ b/src/option.c
@@ -3430,7 +3430,7 @@
 	cdpath = vim_getenv((char_u *)"CDPATH", &mustfree);
 	if (cdpath != NULL)
 	{
-	    buf = alloc((unsigned)((STRLEN(cdpath) << 1) + 2));
+	    buf = alloc((STRLEN(cdpath) << 1) + 2);
 	    if (buf != NULL)
 	    {
 		buf[0] = ',';	    /* start with ",", current dir first */
@@ -7913,7 +7913,7 @@
 	wp->w_p_cc_cols = NULL;
     else
     {
-	wp->w_p_cc_cols = (int *)alloc((unsigned)sizeof(int) * (count + 1));
+	wp->w_p_cc_cols = (int *)alloc(sizeof(int) * (count + 1));
 	if (wp->w_p_cc_cols != NULL)
 	{
 	    /* sort the columns for faster usage on screen redraw inside
@@ -10053,8 +10053,8 @@
 #define INC 20
 #define GAP 3
 
-    items = (struct vimoption **)alloc((unsigned)(sizeof(struct vimoption *) *
-								PARAM_COUNT));
+    items = (struct vimoption **)alloc(sizeof(struct vimoption *)
+								* PARAM_COUNT);
     if (items == NULL)
 	return;
 
@@ -11941,7 +11941,7 @@
 		*num_file = num_term;
 	    else
 		return OK;
-	    *file = (char_u **)alloc((unsigned)(*num_file * sizeof(char_u *)));
+	    *file = (char_u **)alloc(*num_file * sizeof(char_u *));
 	    if (*file == NULL)
 	    {
 		*file = (char_u **)"";
@@ -11959,7 +11959,7 @@
     char_u  *buf;
 
     *num_file = 0;
-    *file = (char_u **)alloc((unsigned)sizeof(char_u *));
+    *file = (char_u **)alloc(sizeof(char_u *));
     if (*file == NULL)
 	return FAIL;
 
@@ -12822,7 +12822,7 @@
 	return FALSE;
     }
 
-    *array = (int *)alloc((unsigned) ((valcount + 1) * sizeof(int)));
+    *array = (int *)alloc((valcount + 1) * sizeof(int));
     if (*array == NULL)
 	return FALSE;
     (*array)[0] = valcount;
@@ -13045,7 +13045,7 @@
 
     if (oldts == NULL)
 	return NULL;
-    newts = (int *)alloc((unsigned)((oldts[0] + 1) * sizeof(int)));
+    newts = (int *)alloc((oldts[0] + 1) * sizeof(int));
     if (newts != NULL)
 	for (t = 0; t <= oldts[0]; ++t)
 	    newts[t] = oldts[t];
diff --git a/src/os_amiga.c b/src/os_amiga.c
index 4a6814c..ec392cd 100644
--- a/src/os_amiga.c
+++ b/src/os_amiga.c
@@ -1467,7 +1467,7 @@
     {
 #endif
 	/* hack to replace '*' by '#?' */
-	starbuf = alloc((unsigned)(2 * STRLEN(pat) + 1));
+	starbuf = alloc(2 * STRLEN(pat) + 1);
 	if (starbuf == NULL)
 	    goto Return;
 	for (sp = pat, dp = starbuf; *sp; ++sp)
diff --git a/src/os_mswin.c b/src/os_mswin.c
index fc6806d..67989fe 100644
--- a/src/os_mswin.c
+++ b/src/os_mswin.c
@@ -1466,8 +1466,8 @@
 	char_u	*port_name = utf16_to_enc(wport_name, NULL);
 
 	if (printer_name != NULL && port_name != NULL)
-	    prt_name = alloc((unsigned)(STRLEN(printer_name)
-					+ STRLEN(port_name) + STRLEN(text)));
+	    prt_name = alloc(STRLEN(printer_name)
+					   + STRLEN(port_name) + STRLEN(text));
 	if (prt_name != NULL)
 	    wsprintf((char *)prt_name, (const char *)text,
 		    printer_name, port_name);
@@ -2111,7 +2111,7 @@
 		char	*err = _(e_invexprmsg);
 		size_t	len = STRLEN(str) + STRLEN(err) + 5;
 
-		res = alloc((unsigned)len);
+		res = alloc(len);
 		if (res != NULL)
 		    vim_snprintf((char *)res, len, "%s: \"%s\"", err, str);
 		reply.dwData = COPYDATA_ERROR_RESULT;
@@ -2340,7 +2340,7 @@
     char_u	*p;
 
     /* Leave enough space for a 9-digit suffix to ensure uniqueness! */
-    ok_name = alloc((unsigned)STRLEN(name) + 10);
+    ok_name = alloc(STRLEN(name) + 10);
 
     STRCPY(ok_name, name);
     p = ok_name + STRLEN(name);
diff --git a/src/os_unix.c b/src/os_unix.c
index a6d1a12..0ec48a1 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -2447,7 +2447,8 @@
 #endif
 
 /*
- * Get name of current directory into buffer 'buf' of length 'len' bytes.
+ * Get name of current directory into buffer "buf" of length "len" bytes.
+ * "len" must be at least PATH_MAX.
  * Return OK for success, FAIL for failure.
  */
     int
@@ -2516,7 +2517,7 @@
     {
 	/*
 	 * If the file name has a path, change to that directory for a moment,
-	 * and then do the getwd() (and get back to where we were).
+	 * and then get the directory (and get back to where we were).
 	 * This will get the correct path name with "../" things.
 	 */
 	if (p != NULL)
@@ -3124,7 +3125,7 @@
     p = (char_u *)getenv("PATH");
     if (p == NULL || *p == NUL)
 	return -1;
-    buf = alloc((unsigned)(STRLEN(name) + STRLEN(p) + 2));
+    buf = alloc(STRLEN(name) + STRLEN(p) + 2);
     if (buf == NULL)
 	return -1;
 
@@ -4323,7 +4324,7 @@
 
 	/* Break 'shellcmdflag' into white separated parts.  This doesn't
 	 * handle quoted strings, they are very unlikely to appear. */
-	*shcf_tofree = alloc((unsigned)STRLEN(p_shcf) + 1);
+	*shcf_tofree = alloc(STRLEN(p_shcf) + 1);
 	if (*shcf_tofree == NULL)    /* out of memory */
 	    return FAIL;
 	s = *shcf_tofree;
@@ -6899,7 +6900,7 @@
 		    && !mch_can_exe((*file)[i], NULL, !(flags & EW_SHELLCMD)))
 	    continue;
 
-	p = alloc((unsigned)(STRLEN((*file)[i]) + 1 + dir));
+	p = alloc(STRLEN((*file)[i]) + 1 + dir);
 	if (p)
 	{
 	    STRCPY(p, (*file)[i]);
diff --git a/src/os_vms.c b/src/os_vms.c
index 61db3a8..ca04019 100644
--- a/src/os_vms.c
+++ b/src/os_vms.c
@@ -238,7 +238,7 @@
     if (sys$trnlnm(&attrib, &d_file_dev, &d_lognam, NULL,&itmlst) == SS$_NORMAL)
     {
 	buffer[lengte] = '\0';
-	if (cp = (char_u *)alloc((unsigned)(lengte+1)))
+	if (cp = (char_u *)alloc(lengte + 1))
 	    strcpy((char *)cp, buffer);
 	return(cp);
     }
diff --git a/src/os_win32.c b/src/os_win32.c
index 237de97..d290710 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -2075,8 +2075,7 @@
 	return FALSE;
 
     wcurpath = _wgetenv(L"PATH");
-    wnewpath = (WCHAR*)alloc((unsigned)(wcslen(wcurpath) + 3)
-	    * sizeof(WCHAR));
+    wnewpath = (WCHAR *)alloc((wcslen(wcurpath) + 3) * sizeof(WCHAR));
     if (wnewpath == NULL)
 	return FALSE;
     wcscpy(wnewpath, L".;");
@@ -7205,7 +7204,7 @@
     char_u	*envbuf;
     WCHAR	*p;
 
-    envbuf = alloc((unsigned)(STRLEN(var) + STRLEN(value) + 2));
+    envbuf = alloc(STRLEN(var) + STRLEN(value) + 2);
     if (envbuf == NULL)
 	return -1;
 
diff --git a/src/proto/misc2.pro b/src/proto/misc2.pro
index 566c973..687cfed 100644
--- a/src/proto/misc2.pro
+++ b/src/proto/misc2.pro
@@ -20,21 +20,20 @@
 void adjust_cursor_col(void);
 int leftcol_changed(void);
 void vim_mem_profile_dump(void);
-int alloc_does_fail(long_u size);
-char_u *alloc(unsigned size);
-char_u *alloc_id(unsigned size, alloc_id_T id);
-char_u *alloc_clear(unsigned size);
-char_u *alloc_clear_id(unsigned size, alloc_id_T id);
-char_u *alloc_check(unsigned size);
-char_u *lalloc_clear(long_u size, int message);
-char_u *lalloc(long_u size, int message);
-char_u *lalloc_id(long_u size, int message, alloc_id_T id);
+int alloc_does_fail(size_t size);
+char_u *alloc(size_t size);
+char_u *alloc_id(size_t size, alloc_id_T id);
+char_u *alloc_clear(size_t size);
+char_u *alloc_clear_id(size_t size, alloc_id_T id);
+char_u *lalloc_clear(size_t size, int message);
+char_u *lalloc(size_t size, int message);
+char_u *lalloc_id(size_t size, int message, alloc_id_T id);
 void *mem_realloc(void *ptr, size_t size);
-void do_outofmem_msg(long_u size);
+void do_outofmem_msg(size_t size);
 void free_all_mem(void);
 char_u *vim_strsave(char_u *string);
 char_u *vim_strnsave(char_u *string, int len);
-char_u *vim_memsave(char_u *p, int len);
+char_u *vim_memsave(char_u *p, size_t len);
 char_u *vim_strsave_escaped(char_u *string, char_u *esc_chars);
 char_u *vim_strsave_escaped_ext(char_u *string, char_u *esc_chars, int cc, int bsl);
 int csh_like_shell(void);
diff --git a/src/quickfix.c b/src/quickfix.c
index cf3b274..46eae2d 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -1346,7 +1346,7 @@
 	if (*fields->errmsg && !qfl->qf_multiignore)
 	{
 	    len = (int)STRLEN(qfprev->qf_text);
-	    if ((ptr = alloc((unsigned)(len + STRLEN(fields->errmsg) + 2)))
+	    if ((ptr = alloc(len + STRLEN(fields->errmsg) + 2))
 		    == NULL)
 		return QF_FAIL;
 	    STRCPY(ptr, qfprev->qf_text);
@@ -1890,7 +1890,7 @@
 {
     qf_delq_T	*q;
 
-    q = (qf_delq_T *)alloc((unsigned)sizeof(qf_delq_T));
+    q = (qf_delq_T *)alloc(sizeof(qf_delq_T));
     if (q != NULL)
     {
 	q->qi = qi;
@@ -2063,7 +2063,7 @@
     qfline_T	*qfp;
     qfline_T	**lastp;	// pointer to qf_last or NULL
 
-    if ((qfp = (qfline_T *)alloc((unsigned)sizeof(qfline_T))) == NULL)
+    if ((qfp = (qfline_T *)alloc(sizeof(qfline_T))) == NULL)
 	return QF_FAIL;
     if (bufnum != 0)
     {
@@ -2429,7 +2429,7 @@
     struct dir_stack_T  *ds_ptr;
 
     // allocate new stack element and hook it in
-    ds_new = (struct dir_stack_T *)alloc((unsigned)sizeof(struct dir_stack_T));
+    ds_new = (struct dir_stack_T *)alloc(sizeof(struct dir_stack_T));
     if (ds_new == NULL)
 	return NULL;
 
@@ -4707,7 +4707,7 @@
 	else
 	    off += 19;
 
-	name = alloc((unsigned)STRLEN(p_mef) + 30);
+	name = alloc(STRLEN(p_mef) + 30);
 	if (name == NULL)
 	    break;
 	STRCPY(name, p_mef);
diff --git a/src/regexp.c b/src/regexp.c
index ee485a3..3697cd9 100644
--- a/src/regexp.c
+++ b/src/regexp.c
@@ -7145,7 +7145,7 @@
 	    {
 		/* length = len(newsub) - 1 + len(prev_sub) + 1 */
 		prevlen = (int)STRLEN(reg_prev_sub);
-		tmpsub = alloc((unsigned)(STRLEN(newsub) + prevlen));
+		tmpsub = alloc(STRLEN(newsub) + prevlen);
 		if (tmpsub != NULL)
 		{
 		    /* copy prefix */
diff --git a/src/screen.c b/src/screen.c
index e6c0b2b..cb10f6e 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -4948,7 +4948,7 @@
 			if (n_extra > 0)
 			    len += n_extra - tab_len;
 			c = lcs_tab1;
-			p = alloc((unsigned)(len + 1));
+			p = alloc(len + 1);
 			vim_memset(p, ' ', len);
 			p[len] = NUL;
 			vim_free(p_extra_free);
@@ -5107,7 +5107,7 @@
 			char_u *p;
 
 			c = *p_extra;
-			p = alloc((unsigned)n_extra + 1);
+			p = alloc(n_extra + 1);
 			vim_memset(p, ' ', n_extra);
 			STRNCPY(p, p_extra + 1, STRLEN(p_extra) - 1);
 			p[n_extra] = NUL;
@@ -6680,9 +6680,9 @@
 	return;
 
     if (has_mbyte)
-	buf = alloc((unsigned)Columns * MB_MAXBYTES + 1);
+	buf = alloc(Columns * MB_MAXBYTES + 1);
     else
-	buf = alloc((unsigned)Columns + 1);
+	buf = alloc(Columns + 1);
     if (buf == NULL)
 	return;
 
diff --git a/src/spell.c b/src/spell.c
index fbe2080..fa5be8b 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -2083,7 +2083,7 @@
     hi = hash_lookup(&lp->sl_wordcount, p, hash);
     if (HASHITEM_EMPTY(hi))
     {
-	wc = (wordcount_T *)alloc((unsigned)(sizeof(wordcount_T) + STRLEN(p)));
+	wc = (wordcount_T *)alloc(sizeof(wordcount_T) + STRLEN(p));
 	if (wc == NULL)
 	    return;
 	STRCPY(wc->wc_word, p);
@@ -3432,8 +3432,7 @@
 	}
 
 	/* Replace the word. */
-	p = alloc((unsigned)STRLEN(line) - stp->st_orglen
-						       + stp->st_wordlen + 1);
+	p = alloc(STRLEN(line) - stp->st_orglen + stp->st_wordlen + 1);
 	if (p != NULL)
 	{
 	    c = (int)(sug.su_badptr - line);
@@ -3552,7 +3551,7 @@
     }
     addlen = (int)(STRLEN(repl_to) - STRLEN(repl_from));
 
-    frompat = alloc((unsigned)STRLEN(repl_from) + 7);
+    frompat = alloc(STRLEN(repl_from) + 7);
     if (frompat == NULL)
 	return;
     sprintf((char *)frompat, "\\V\\<%s\\>", repl_from);
@@ -3573,7 +3572,7 @@
 	if (addlen <= 0 || STRNCMP(line + curwin->w_cursor.col,
 					       repl_to, STRLEN(repl_to)) != 0)
 	{
-	    p = alloc((unsigned)STRLEN(line) + addlen + 1);
+	    p = alloc(STRLEN(line) + addlen + 1);
 	    if (p == NULL)
 		break;
 	    mch_memmove(p, line, curwin->w_cursor.col);
@@ -6224,8 +6223,7 @@
     hi = hash_lookup(&slang->sl_sounddone, goodword, hash);
     if (HASHITEM_EMPTY(hi))
     {
-	sft = (sftword_T *)alloc((unsigned)(sizeof(sftword_T)
-							 + STRLEN(goodword)));
+	sft = (sftword_T *)alloc(sizeof(sftword_T) + STRLEN(goodword));
 	if (sft != NULL)
 	{
 	    sft->sft_score = score;
diff --git a/src/spellfile.c b/src/spellfile.c
index 00c72f6..06cf1bc 100644
--- a/src/spellfile.c
+++ b/src/spellfile.c
@@ -1264,7 +1264,7 @@
     c = todo * 2 + 7;
     if (enc_utf8)
 	c += todo * 2;
-    pat = alloc((unsigned)c);
+    pat = alloc(c);
     if (pat == NULL)
 	return SP_OTHERERROR;
 
@@ -6615,7 +6615,7 @@
 		hash_T	    hash;
 		hashitem_T  *hi;
 
-		b = alloc((unsigned)(cl + headcl + 2));
+		b = alloc(cl + headcl + 2);
 		if (b == NULL)
 		    return;
 		mb_char2bytes(c, b);
diff --git a/src/syntax.c b/src/syntax.c
index 0949145..27a64c2 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -4757,7 +4757,7 @@
     if (curwin->w_s->b_syn_topgrp >= SYNID_CLUSTER)
     {
 	/* We have to alloc this, because syn_combine_list() will free it. */
-	short	    *grp_list = (short *)alloc((unsigned)(2 * sizeof(short)));
+	short	    *grp_list = (short *)alloc(2 * sizeof(short));
 	int	    tlg_id = curwin->w_s->b_syn_topgrp - SYNID_CLUSTER;
 
 	if (grp_list != NULL)
@@ -4872,7 +4872,7 @@
 	    syn_id = syn_check_group(arg, (int)(group_name_end - arg));
 	if (syn_id != 0)
 	    /* allocate a buffer, for removing backslashes in the keyword */
-	    keyword_copy = alloc((unsigned)STRLEN(rest) + 1);
+	    keyword_copy = alloc(STRLEN(rest) + 1);
 	if (keyword_copy != NULL)
 	{
 	    syn_opt_arg.flags = 0;
@@ -5208,7 +5208,7 @@
 	     * syn_patterns for this item, at the start (because the list is
 	     * used from end to start).
 	     */
-	    ppp = (struct pat_ptr *)alloc((unsigned)sizeof(struct pat_ptr));
+	    ppp = (struct pat_ptr *)alloc(sizeof(struct pat_ptr));
 	    if (ppp == NULL)
 	    {
 		rest = NULL;
@@ -5465,7 +5465,7 @@
 		clstr = NULL;
 		break;
 	    }
-	    clstr = (short *)alloc((unsigned)((count + 1) * sizeof(short)));
+	    clstr = (short *)alloc((count + 1) * sizeof(short));
 	    if (clstr == NULL)
 		break;
 	    clstr[count] = 0;
@@ -6124,7 +6124,7 @@
 	    break;
 	if (round == 1)
 	{
-	    retval = (short *)alloc((unsigned)((count + 1) * sizeof(short)));
+	    retval = (short *)alloc((count + 1) * sizeof(short));
 	    if (retval == NULL)
 		break;
 	    retval[count] = 0;	    /* zero means end of the list */
@@ -6163,7 +6163,7 @@
     for (count = 0; list[count]; ++count)
 	;
     len = (count + 1) * sizeof(short);
-    retval = (short *)alloc((unsigned)len);
+    retval = (short *)alloc(len);
     if (retval != NULL)
 	mch_memmove(retval, list, (size_t)len);
 
@@ -7167,7 +7167,7 @@
 	return OK;
 
     recursive = TRUE;
-    buf = alloc((unsigned)(STRLEN(name) + 12));
+    buf = alloc(STRLEN(name) + 12);
     if (buf != NULL)
     {
 	apply_autocmds(EVENT_COLORSCHEMEPRE, name,
diff --git a/src/term.c b/src/term.c
index fb002ec..9885fec 100644
--- a/src/term.c
+++ b/src/term.c
@@ -6165,7 +6165,7 @@
      * Allocate space for the translation.  Worst case a single character is
      * replaced by 6 bytes (shifted special key), plus a NUL at the end.
      */
-    result = alloc((unsigned)STRLEN(from) * 6 + 1);
+    result = alloc(STRLEN(from) * 6 + 1);
     if (result == NULL)		/* out of memory */
     {
 	*bufp = NULL;
@@ -6420,7 +6420,7 @@
 
     if (tc_len == 0)	    /* no terminal codes (must be GUI) */
 	return;
-    items = (int *)alloc((unsigned)(sizeof(int) * tc_len));
+    items = (int *)alloc(sizeof(int) * tc_len);
     if (items == NULL)
 	return;
 
diff --git a/src/undo.c b/src/undo.c
index c4558d1..ed2cd58 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -367,6 +367,8 @@
     }
     else
     {
+	// This uses the length in the memline, thus text properties are
+	// included.
 	ul->ul_len = curbuf->b_ml.ml_line_len;
 	ul->ul_line = vim_memsave(line, ul->ul_len);
     }
@@ -1121,7 +1123,7 @@
     static char_u *
 read_string_decrypt(bufinfo_T *bi, int len)
 {
-    char_u  *ptr = alloc((unsigned)len + 1);
+    char_u  *ptr = alloc(len + 1);
 
     if (ptr != NULL)
     {
@@ -2689,7 +2691,8 @@
 		    char_u *p = ml_get(top + 1 + i);
 
 		    if (curbuf->b_ml.ml_line_len != uep->ue_array[i].ul_len
-			    || memcmp(uep->ue_array[i].ul_line, p, curbuf->b_ml.ml_line_len) != 0)
+			    || memcmp(uep->ue_array[i].ul_line, p,
+						curbuf->b_ml.ml_line_len) != 0)
 			break;
 		}
 		if (i == newsize && newlnum == MAXLNUM && uep->ue_next == NULL)
@@ -2750,9 +2753,11 @@
 		// If the file is empty, there is an empty line 1 that we
 		// should get rid of, by replacing it with the new line.
 		if (empty_buffer && lnum == 0)
-		    ml_replace_len((linenr_T)1, uep->ue_array[i].ul_line, uep->ue_array[i].ul_len, TRUE, TRUE);
+		    ml_replace_len((linenr_T)1, uep->ue_array[i].ul_line,
+					  uep->ue_array[i].ul_len, TRUE, TRUE);
 		else
-		    ml_append(lnum, uep->ue_array[i].ul_line, (colnr_T)uep->ue_array[i].ul_len, FALSE);
+		    ml_append(lnum, uep->ue_array[i].ul_line,
+				      (colnr_T)uep->ue_array[i].ul_len, FALSE);
 		vim_free(uep->ue_array[i].ul_line);
 	    }
 	    vim_free((char_u *)uep->ue_array);
diff --git a/src/usercmd.c b/src/usercmd.c
index 45d7ea0..e5c3a3e 100644
--- a/src/usercmd.c
+++ b/src/usercmd.c
@@ -1637,7 +1637,7 @@
 	}
 
 	totlen += STRLEN(p);	    // Add on the trailing characters
-	buf = alloc((unsigned)(totlen + 1));
+	buf = alloc(totlen + 1);
 	if (buf == NULL)
 	{
 	    vim_free(split_buf);
diff --git a/src/userfunc.c b/src/userfunc.c
index 763903f..dcf8034 100644
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -557,7 +557,7 @@
 	}
 	else
 	{
-	    fname = alloc((unsigned)(i + STRLEN(name + llen) + 1));
+	    fname = alloc(i + STRLEN(name + llen) + 1);
 	    if (fname == NULL)
 		*error = ERROR_OTHER;
 	    else
@@ -978,7 +978,7 @@
     /* need space for function name + ("function " + 3) or "[number]" */
     len = (save_sourcing_name == NULL ? 0 : STRLEN(save_sourcing_name))
 						   + STRLEN(fp->uf_name) + 20;
-    sourcing_name = alloc((unsigned)len);
+    sourcing_name = alloc(len);
     if (sourcing_name != NULL)
     {
 	if (save_sourcing_name != NULL
@@ -1932,7 +1932,7 @@
 	}
     }
 
-    name = alloc((unsigned)(len + lead + 1));
+    name = alloc(len + lead + 1);
     if (name != NULL)
     {
 	if (lead > 0)
@@ -2787,7 +2787,7 @@
     if (todo == 0)
 	return;     /* nothing to dump */
 
-    sorttab = (ufunc_T **)alloc((unsigned)(sizeof(ufunc_T *) * todo));
+    sorttab = (ufunc_T **)alloc(sizeof(ufunc_T *) * todo);
 
     for (hi = func_hashtab.ht_array; todo > 0; ++hi)
     {
diff --git a/src/version.c b/src/version.c
index b774f3d..678d7e8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -61,7 +61,7 @@
 		+ strlen(VIM_VERSION_DATE_ONLY)
 		+ strlen(date_time);
 
-    longVersion = (char *)alloc((unsigned)len);
+    longVersion = (char *)alloc(len);
     if (longVersion == NULL)
 	longVersion = VIM_VERSION_LONG;
     else
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1384,
+/**/
     1383,
 /**/
     1382,
diff --git a/src/winclip.c b/src/winclip.c
index 4d0a2c3..feef18d 100644
--- a/src/winclip.c
+++ b/src/winclip.c
@@ -169,7 +169,7 @@
 {
     *outlen = WideCharToMultiByte(cp, flags, in, inlen, NULL, 0, def, useddef);
     /* Add one one byte to avoid a zero-length alloc(). */
-    *out = (LPSTR)alloc((unsigned)*outlen + 1);
+    *out = (LPSTR)alloc(*outlen + 1);
     if (*out != NULL)
     {
 	WideCharToMultiByte(cp, flags, in, inlen, *out, *outlen, def, useddef);
@@ -512,8 +512,7 @@
 	    metadata.txtlen = WideCharToMultiByte(GetACP(), 0, out, len,
 							       NULL, 0, 0, 0);
 	    vim_free(str);
-	    str = (char_u *)alloc((unsigned)(metadata.txtlen == 0 ? 1
-							  : metadata.txtlen));
+	    str = (char_u *)alloc(metadata.txtlen == 0 ? 1 : metadata.txtlen);
 	    if (str == NULL)
 	    {
 		vim_free(out);
@@ -655,7 +654,7 @@
 	convert_setup(&conv, NULL, NULL);
 
 	length = utf8_to_utf16(str, *lenp, NULL, NULL);
-	ret = (WCHAR *)alloc((unsigned)((length + 1) * sizeof(WCHAR)));
+	ret = (WCHAR *)alloc((length + 1) * sizeof(WCHAR));
 	if (ret != NULL)
 	{
 	    utf8_to_utf16(str, *lenp, (short_u *)ret, NULL);