diff --git a/src/evalvars.c b/src/evalvars.c
index 0d1fe82..facafc7 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -3391,7 +3391,8 @@
     if (*name == 'v')				// v: variable
 	return &vimvarht;
     if (get_current_funccal() != NULL
-	       && get_current_funccal()->func->uf_def_status == UF_NOT_COMPILED)
+	       && get_current_funccal()->fc_func->uf_def_status
+							    == UF_NOT_COMPILED)
     {
 	// a: and l: are only used in functions defined with ":function"
 	if (*name == 'a')			// a: function argument
diff --git a/src/profiler.c b/src/profiler.c
index 8b6b810..9c9fa9d 100644
--- a/src/profiler.c
+++ b/src/profiler.c
@@ -718,8 +718,8 @@
 {
     funccall_T *fc = get_current_funccal();
 
-    if (fc != NULL && fc->func->uf_profiling)
-	profile_start(&fc->prof_child);
+    if (fc != NULL && fc->fc_func->uf_profiling)
+	profile_start(&fc->fc_prof_child);
     script_prof_save(tm);
 }
 
@@ -733,12 +733,12 @@
 {
     funccall_T *fc = get_current_funccal();
 
-    if (fc != NULL && fc->func->uf_profiling)
+    if (fc != NULL && fc->fc_func->uf_profiling)
     {
-	profile_end(&fc->prof_child);
-	profile_sub_wait(tm, &fc->prof_child); // don't count waiting time
-	profile_add(&fc->func->uf_tm_children, &fc->prof_child);
-	profile_add(&fc->func->uf_tml_children, &fc->prof_child);
+	profile_end(&fc->fc_prof_child);
+	profile_sub_wait(tm, &fc->fc_prof_child); // don't count waiting time
+	profile_add(&fc->fc_func->uf_tm_children, &fc->fc_prof_child);
+	profile_add(&fc->fc_func->uf_tml_children, &fc->fc_prof_child);
     }
     script_prof_restore(tm);
 }
@@ -753,7 +753,7 @@
 func_line_start(void *cookie, long lnum)
 {
     funccall_T	*fcp = (funccall_T *)cookie;
-    ufunc_T	*fp = fcp->func;
+    ufunc_T	*fp = fcp->fc_func;
 
     if (fp->uf_profiling && lnum >= 1 && lnum <= fp->uf_lines.ga_len)
     {
@@ -775,7 +775,7 @@
 func_line_exec(void *cookie)
 {
     funccall_T	*fcp = (funccall_T *)cookie;
-    ufunc_T	*fp = fcp->func;
+    ufunc_T	*fp = fcp->fc_func;
 
     if (fp->uf_profiling && fp->uf_tml_idx >= 0)
 	fp->uf_tml_execed = TRUE;
@@ -788,7 +788,7 @@
 func_line_end(void *cookie)
 {
     funccall_T	*fcp = (funccall_T *)cookie;
-    ufunc_T	*fp = fcp->func;
+    ufunc_T	*fp = fcp->fc_func;
 
     if (fp->uf_profiling && fp->uf_tml_idx >= 0)
     {
diff --git a/src/structs.h b/src/structs.h
index e627719..6e679e2 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1735,40 +1735,40 @@
  */
 struct funccall_S
 {
-    ufunc_T	*func;		// function being called
-    int		linenr;		// next line to be executed
-    int		returned;	// ":return" used
+    ufunc_T	*fc_func;	// function being called
+    int		fc_linenr;	// next line to be executed
+    int		fc_returned;	// ":return" used
     struct			// fixed variables for arguments
     {
 	dictitem_T	var;		// variable (without room for name)
 	char_u	room[VAR_SHORT_LEN];	// room for the name
-    } fixvar[FIXVAR_CNT];
-    dict_T	l_vars;		// l: local function variables
-    dictitem_T	l_vars_var;	// variable for l: scope
-    dict_T	l_avars;	// a: argument variables
-    dictitem_T	l_avars_var;	// variable for a: scope
-    list_T	l_varlist;	// list for a:000
-    listitem_T	l_listitems[MAX_FUNC_ARGS];	// listitems for a:000
-    typval_T	*rettv;		// return value
-    linenr_T	breakpoint;	// next line with breakpoint or zero
-    int		dbg_tick;	// debug_tick when breakpoint was set
-    int		level;		// top nesting level of executed function
+    } fc_fixvar[FIXVAR_CNT];
+    dict_T	fc_l_vars;	// l: local function variables
+    dictitem_T	fc_l_vars_var;	// variable for l: scope
+    dict_T	fc_l_avars;	// a: argument variables
+    dictitem_T	fc_l_avars_var;	// variable for a: scope
+    list_T	fc_l_varlist;	// list for a:000
+    listitem_T	fc_l_listitems[MAX_FUNC_ARGS];	// listitems for a:000
+    typval_T	*fc_rettv;	// return value
+    linenr_T	fc_breakpoint;	// next line with breakpoint or zero
+    int		fc_dbg_tick;	// debug_tick when breakpoint was set
+    int		fc_level;	// top nesting level of executed function
 
     garray_T	fc_defer;	// functions to be called on return
     ectx_T	*fc_ectx;	// execution context for :def function, NULL
 				// otherwise
 
 #ifdef FEAT_PROFILE
-    proftime_T	prof_child;	// time spent in a child
+    proftime_T	fc_prof_child;	// time spent in a child
 #endif
-    funccall_T	*caller;	// calling function or NULL; or next funccal in
+    funccall_T	*fc_caller;	// calling function or NULL; or next funccal in
 				// list pointed to by previous_funccal.
 
     // for closure
     int		fc_refcount;	// number of user functions that reference this
 				// funccal
     int		fc_copyID;	// for garbage collection
-    garray_T	fc_funcs;	// list of ufunc_T* which keep a reference to
+    garray_T	fc_ufuncs;	// list of ufunc_T* which keep a reference to
 				// "func"
 };
 
diff --git a/src/userfunc.c b/src/userfunc.c
index 8956b82..801425d 100644
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -499,10 +499,10 @@
     fp->uf_scoped = current_funccal;
     current_funccal->fc_refcount++;
 
-    if (ga_grow(&current_funccal->fc_funcs, 1) == FAIL)
+    if (ga_grow(&current_funccal->fc_ufuncs, 1) == FAIL)
 	return FAIL;
-    ((ufunc_T **)current_funccal->fc_funcs.ga_data)
-	[current_funccal->fc_funcs.ga_len++] = fp;
+    ((ufunc_T **)current_funccal->fc_ufuncs.ga_data)
+				    [current_funccal->fc_ufuncs.ga_len++] = fp;
     return OK;
 }
 
@@ -2141,9 +2141,9 @@
 {
     int	i;
 
-    for (i = 0; i < fc->fc_funcs.ga_len; ++i)
+    for (i = 0; i < fc->fc_ufuncs.ga_len; ++i)
     {
-	ufunc_T *fp = ((ufunc_T **)(fc->fc_funcs.ga_data))[i];
+	ufunc_T *fp = ((ufunc_T **)(fc->fc_ufuncs.ga_data))[i];
 
 	// When garbage collecting a funccall_T may be freed before the
 	// function that references it, clear its uf_scoped field.
@@ -2152,9 +2152,9 @@
 	if (fp != NULL && fp->uf_scoped == fc)
 	    fp->uf_scoped = NULL;
     }
-    ga_clear(&fc->fc_funcs);
+    ga_clear(&fc->fc_ufuncs);
 
-    func_ptr_unref(fc->func);
+    func_ptr_unref(fc->fc_func);
     vim_free(fc);
 }
 
@@ -2169,13 +2169,13 @@
     listitem_T	*li;
 
     // Free all l: variables.
-    vars_clear(&fc->l_vars.dv_hashtab);
+    vars_clear(&fc->fc_l_vars.dv_hashtab);
 
     // Free all a: variables.
-    vars_clear(&fc->l_avars.dv_hashtab);
+    vars_clear(&fc->fc_l_avars.dv_hashtab);
 
     // Free the a:000 variables.
-    FOR_ALL_LIST_ITEMS(&fc->l_varlist, li)
+    FOR_ALL_LIST_ITEMS(&fc->fc_l_varlist, li)
 	clear_tv(&li->li_tv);
 
     free_funccal(fc);
@@ -2191,19 +2191,19 @@
     int	may_free_fc = fc->fc_refcount <= 0;
     int	free_fc = TRUE;
 
-    current_funccal = fc->caller;
+    current_funccal = fc->fc_caller;
 
     // Free all l: variables if not referred.
-    if (may_free_fc && fc->l_vars.dv_refcount == DO_NOT_FREE_CNT)
-	vars_clear(&fc->l_vars.dv_hashtab);
+    if (may_free_fc && fc->fc_l_vars.dv_refcount == DO_NOT_FREE_CNT)
+	vars_clear(&fc->fc_l_vars.dv_hashtab);
     else
 	free_fc = FALSE;
 
     // If the a:000 list and the l: and a: dicts are not referenced and
     // there is no closure using it, we can free the funccall_T and what's
     // in it.
-    if (may_free_fc && fc->l_avars.dv_refcount == DO_NOT_FREE_CNT)
-	vars_clear_ext(&fc->l_avars.dv_hashtab, FALSE);
+    if (may_free_fc && fc->fc_l_avars.dv_refcount == DO_NOT_FREE_CNT)
+	vars_clear_ext(&fc->fc_l_avars.dv_hashtab, FALSE);
     else
     {
 	int	    todo;
@@ -2213,8 +2213,8 @@
 	free_fc = FALSE;
 
 	// Make a copy of the a: variables, since we didn't do that above.
-	todo = (int)fc->l_avars.dv_hashtab.ht_used;
-	for (hi = fc->l_avars.dv_hashtab.ht_array; todo > 0; ++hi)
+	todo = (int)fc->fc_l_avars.dv_hashtab.ht_used;
+	for (hi = fc->fc_l_avars.dv_hashtab.ht_array; todo > 0; ++hi)
 	{
 	    if (!HASHITEM_EMPTY(hi))
 	    {
@@ -2225,8 +2225,8 @@
 	}
     }
 
-    if (may_free_fc && fc->l_varlist.lv_refcount == DO_NOT_FREE_CNT)
-	fc->l_varlist.lv_first = NULL;
+    if (may_free_fc && fc->fc_l_varlist.lv_refcount == DO_NOT_FREE_CNT)
+	fc->fc_l_varlist.lv_first = NULL;
     else
     {
 	listitem_T *li;
@@ -2234,7 +2234,7 @@
 	free_fc = FALSE;
 
 	// Make a copy of the a:000 items, since we didn't do that above.
-	FOR_ALL_LIST_ITEMS(&fc->l_varlist, li)
+	FOR_ALL_LIST_ITEMS(&fc->fc_l_varlist, li)
 	    copy_tv(&li->li_tv, &li->li_tv);
     }
 
@@ -2247,7 +2247,7 @@
 	// "fc" is still in use.  This can happen when returning "a:000",
 	// assigning "l:" to a global variable or defining a closure.
 	// Link "fc" in the list for garbage collection later.
-	fc->caller = previous_funccal;
+	fc->fc_caller = previous_funccal;
 	previous_funccal = fc;
 
 	if (want_garbage_collect)
@@ -2305,21 +2305,21 @@
 	return;
 
     if (--fc->fc_refcount <= 0 && (force || (
-		fc->l_varlist.lv_refcount == DO_NOT_FREE_CNT
-		&& fc->l_vars.dv_refcount == DO_NOT_FREE_CNT
-		&& fc->l_avars.dv_refcount == DO_NOT_FREE_CNT)))
-	for (pfc = &previous_funccal; *pfc != NULL; pfc = &(*pfc)->caller)
+		fc->fc_l_varlist.lv_refcount == DO_NOT_FREE_CNT
+		&& fc->fc_l_vars.dv_refcount == DO_NOT_FREE_CNT
+		&& fc->fc_l_avars.dv_refcount == DO_NOT_FREE_CNT)))
+	for (pfc = &previous_funccal; *pfc != NULL; pfc = &(*pfc)->fc_caller)
 	{
 	    if (fc == *pfc)
 	    {
-		*pfc = fc->caller;
+		*pfc = fc->fc_caller;
 		free_funccal_contents(fc);
 		return;
 	    }
 	}
-    for (i = 0; i < fc->fc_funcs.ga_len; ++i)
-	if (((ufunc_T **)(fc->fc_funcs.ga_data))[i] == fp)
-	    ((ufunc_T **)(fc->fc_funcs.ga_data))[i] = NULL;
+    for (i = 0; i < fc->fc_ufuncs.ga_len; ++i)
+	if (((ufunc_T **)(fc->fc_ufuncs.ga_data))[i] == fp)
+	    ((ufunc_T **)(fc->fc_ufuncs.ga_data))[i] = NULL;
 }
 
 /*
@@ -2599,7 +2599,7 @@
     int		save_did_emsg;
     int		default_arg_err = FALSE;
     dictitem_T	*v;
-    int		fixvar_idx = 0;	// index in fixvar[]
+    int		fixvar_idx = 0;	// index in fc_fixvar[]
     int		i;
     int		ai;
     int		islambda = FALSE;
@@ -2629,22 +2629,22 @@
     fc = ALLOC_CLEAR_ONE(funccall_T);
     if (fc == NULL)
 	return;
-    fc->caller = current_funccal;
+    fc->fc_caller = current_funccal;
     current_funccal = fc;
-    fc->func = fp;
-    fc->rettv = rettv;
-    fc->level = ex_nesting_level;
+    fc->fc_func = fp;
+    fc->fc_rettv = rettv;
+    fc->fc_level = ex_nesting_level;
     // Check if this function has a breakpoint.
-    fc->breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name, (linenr_T)0);
-    fc->dbg_tick = debug_tick;
+    fc->fc_breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name, (linenr_T)0);
+    fc->fc_dbg_tick = debug_tick;
     // Set up fields for closure.
-    ga_init2(&fc->fc_funcs, sizeof(ufunc_T *), 1);
+    ga_init2(&fc->fc_ufuncs, sizeof(ufunc_T *), 1);
     func_ptr_ref(fp);
 
     if (fp->uf_def_status != UF_NOT_COMPILED)
     {
 #ifdef FEAT_PROFILE
-	ufunc_T *caller = fc->caller == NULL ? NULL : fc->caller->func;
+	ufunc_T *caller = fc->fc_caller == NULL ? NULL : fc->fc_caller->fc_func;
 #endif
 	// Execute the function, possibly compiling it first.
 #ifdef FEAT_PROFILE
@@ -2660,7 +2660,7 @@
 				  || (caller != NULL && caller->uf_profiling)))
 	    profile_may_end_func(&profile_info, fp, caller);
 #endif
-	current_funccal = fc->caller;
+	current_funccal = fc->fc_caller;
 	free_funccal(fc);
 	sticky_cmdmod_flags = save_sticky_cmdmod_flags;
 	return;
@@ -2669,23 +2669,23 @@
     islambda = fp->uf_flags & FC_LAMBDA;
 
     /*
-     * Note about using fc->fixvar[]: This is an array of FIXVAR_CNT variables
+     * Note about using fc->fc_fixvar[]: This is an array of FIXVAR_CNT variables
      * with names up to VAR_SHORT_LEN long.  This avoids having to alloc/free
      * each argument variable and saves a lot of time.
      */
     /*
      * Init l: variables.
      */
-    init_var_dict(&fc->l_vars, &fc->l_vars_var, VAR_DEF_SCOPE);
+    init_var_dict(&fc->fc_l_vars, &fc->fc_l_vars_var, VAR_DEF_SCOPE);
     if (selfdict != NULL)
     {
 	// Set l:self to "selfdict".  Use "name" to avoid a warning from
 	// some compiler that checks the destination size.
-	v = &fc->fixvar[fixvar_idx++].var;
+	v = &fc->fc_fixvar[fixvar_idx++].var;
 	name = v->di_key;
 	STRCPY(name, "self");
 	v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
-	hash_add(&fc->l_vars.dv_hashtab, DI2HIKEY(v));
+	hash_add(&fc->fc_l_vars.dv_hashtab, DI2HIKEY(v));
 	v->di_tv.v_type = VAR_DICT;
 	v->di_tv.v_lock = 0;
 	v->di_tv.vval.v_dict = selfdict;
@@ -2697,28 +2697,28 @@
      * Set a:0 to "argcount" less number of named arguments, if >= 0.
      * Set a:000 to a list with room for the "..." arguments.
      */
-    init_var_dict(&fc->l_avars, &fc->l_avars_var, VAR_SCOPE);
+    init_var_dict(&fc->fc_l_avars, &fc->fc_l_avars_var, VAR_SCOPE);
     if ((fp->uf_flags & FC_NOARGS) == 0)
-	add_nr_var(&fc->l_avars, &fc->fixvar[fixvar_idx++].var, "0",
+	add_nr_var(&fc->fc_l_avars, &fc->fc_fixvar[fixvar_idx++].var, "0",
 				(varnumber_T)(argcount >= fp->uf_args.ga_len
 				    ? argcount - fp->uf_args.ga_len : 0));
-    fc->l_avars.dv_lock = VAR_FIXED;
+    fc->fc_l_avars.dv_lock = VAR_FIXED;
     if ((fp->uf_flags & FC_NOARGS) == 0)
     {
 	// Use "name" to avoid a warning from some compiler that checks the
 	// destination size.
-	v = &fc->fixvar[fixvar_idx++].var;
+	v = &fc->fc_fixvar[fixvar_idx++].var;
 	name = v->di_key;
 	STRCPY(name, "000");
 	v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
-	hash_add(&fc->l_avars.dv_hashtab, DI2HIKEY(v));
+	hash_add(&fc->fc_l_avars.dv_hashtab, DI2HIKEY(v));
 	v->di_tv.v_type = VAR_LIST;
 	v->di_tv.v_lock = VAR_FIXED;
-	v->di_tv.vval.v_list = &fc->l_varlist;
+	v->di_tv.vval.v_list = &fc->fc_l_varlist;
     }
-    CLEAR_FIELD(fc->l_varlist);
-    fc->l_varlist.lv_refcount = DO_NOT_FREE_CNT;
-    fc->l_varlist.lv_lock = VAR_FIXED;
+    CLEAR_FIELD(fc->fc_l_varlist);
+    fc->fc_l_varlist.lv_refcount = DO_NOT_FREE_CNT;
+    fc->fc_l_varlist.lv_lock = VAR_FIXED;
 
     /*
      * Set a:firstline to "firstline" and a:lastline to "lastline".
@@ -2728,10 +2728,10 @@
      */
     if ((fp->uf_flags & FC_NOARGS) == 0)
     {
-	add_nr_var(&fc->l_avars, &fc->fixvar[fixvar_idx++].var, "firstline",
-					   (varnumber_T)funcexe->fe_firstline);
-	add_nr_var(&fc->l_avars, &fc->fixvar[fixvar_idx++].var, "lastline",
-					    (varnumber_T)funcexe->fe_lastline);
+	add_nr_var(&fc->fc_l_avars, &fc->fc_fixvar[fixvar_idx++].var,
+			      "firstline", (varnumber_T)funcexe->fe_firstline);
+	add_nr_var(&fc->fc_l_avars, &fc->fc_fixvar[fixvar_idx++].var,
+				"lastline", (varnumber_T)funcexe->fe_lastline);
     }
     for (i = 0; i < argcount || i < fp->uf_args.ga_len; ++i)
     {
@@ -2779,7 +2779,7 @@
 	}
 	if (fixvar_idx < FIXVAR_CNT && STRLEN(name) <= VAR_SHORT_LEN)
 	{
-	    v = &fc->fixvar[fixvar_idx++].var;
+	    v = &fc->fc_fixvar[fixvar_idx++].var;
 	    v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
 	    STRCPY(v->di_key, name);
 	}
@@ -2805,18 +2805,18 @@
 	    // Named arguments should be accessed without the "a:" prefix in
 	    // lambda expressions.  Add to the l: dict.
 	    copy_tv(&v->di_tv, &v->di_tv);
-	    hash_add(&fc->l_vars.dv_hashtab, DI2HIKEY(v));
+	    hash_add(&fc->fc_l_vars.dv_hashtab, DI2HIKEY(v));
 	}
 	else
-	    hash_add(&fc->l_avars.dv_hashtab, DI2HIKEY(v));
+	    hash_add(&fc->fc_l_avars.dv_hashtab, DI2HIKEY(v));
 
 	if (ai >= 0 && ai < MAX_FUNC_ARGS)
 	{
-	    listitem_T *li = &fc->l_listitems[ai];
+	    listitem_T *li = &fc->fc_l_listitems[ai];
 
 	    li->li_tv = argvars[i];
 	    li->li_tv.v_lock = VAR_FIXED;
-	    list_append(&fc->l_varlist, li);
+	    list_append(&fc->fc_l_varlist, li);
 	}
     }
 
@@ -2879,7 +2879,7 @@
 #ifdef FEAT_PROFILE
     if (do_profiling == PROF_YES)
 	profile_may_start_func(&profile_info, fp,
-				 fc->caller == NULL ? NULL : fc->caller->func);
+			fc->fc_caller == NULL ? NULL : fc->fc_caller->fc_func);
 #endif
 
     // "legacy" does not apply to commands in the function
@@ -2923,7 +2923,7 @@
 #ifdef FEAT_PROFILE
     if (do_profiling == PROF_YES)
     {
-	ufunc_T *caller = fc->caller == NULL ? NULL : fc->caller->func;
+	ufunc_T *caller = fc->fc_caller == NULL ? NULL : fc->fc_caller->fc_func;
 
 	if (fp->uf_profiling || (caller != NULL && caller->uf_profiling))
 	    profile_may_end_func(&profile_info, fp, caller);
@@ -2938,9 +2938,9 @@
 
 	if (aborting())
 	    smsg(_("%s aborted"), SOURCING_NAME);
-	else if (fc->rettv->v_type == VAR_NUMBER)
+	else if (fc->fc_rettv->v_type == VAR_NUMBER)
 	    smsg(_("%s returning #%ld"), SOURCING_NAME,
-					       (long)fc->rettv->vval.v_number);
+					    (long)fc->fc_rettv->vval.v_number);
 	else
 	{
 	    char_u	buf[MSG_BUF_LEN];
@@ -2952,7 +2952,7 @@
 	    // have some idea how it starts and ends. smsg() would always
 	    // truncate it at the end. Don't want errors such as E724 here.
 	    ++emsg_off;
-	    s = tv2string(fc->rettv, &tofree, numbuf2, 0);
+	    s = tv2string(fc->fc_rettv, &tofree, numbuf2, 0);
 	    --emsg_off;
 	    if (s != NULL)
 	    {
@@ -3188,7 +3188,7 @@
     // Clean up the current_funccal chain and the funccal stack.
     while (current_funccal != NULL)
     {
-	clear_tv(current_funccal->rettv);
+	clear_tv(current_funccal->fc_rettv);
 	cleanup_function_call(current_funccal);
 	if (current_funccal == NULL && funccal_stack != NULL)
 	    restore_funccal();
@@ -5418,9 +5418,9 @@
     static int
 can_free_funccal(funccall_T *fc, int copyID)
 {
-    return (fc->l_varlist.lv_copyID != copyID
-	    && fc->l_vars.dv_copyID != copyID
-	    && fc->l_avars.dv_copyID != copyID
+    return (fc->fc_l_varlist.lv_copyID != copyID
+	    && fc->fc_l_vars.dv_copyID != copyID
+	    && fc->fc_l_avars.dv_copyID != copyID
 	    && fc->fc_copyID != copyID);
 }
 
@@ -5696,7 +5696,8 @@
 {
     funccall_T *funccal;
 
-    for (funccal = current_funccal; funccal != NULL; funccal = funccal->caller)
+    for (funccal = current_funccal; funccal != NULL;
+						  funccal = funccal->fc_caller)
 	if (funccal->fc_ectx != NULL)
 	{
 	    // :def function
@@ -5849,7 +5850,7 @@
 
     if (reanimate)
 	// Undo the return.
-	current_funccal->returned = FALSE;
+	current_funccal->fc_returned = FALSE;
 
     /*
      * Cleanup (and inactivate) conditionals, but stop when a try conditional
@@ -5872,7 +5873,7 @@
 	    // When undoing a return in order to make it pending, get the stored
 	    // return rettv.
 	    if (reanimate)
-		rettv = current_funccal->rettv;
+		rettv = current_funccal->fc_rettv;
 
 	    if (rettv != NULL)
 	    {
@@ -5890,23 +5891,23 @@
 		// The pending return value could be overwritten by a ":return"
 		// without argument in a finally clause; reset the default
 		// return value.
-		current_funccal->rettv->v_type = VAR_NUMBER;
-		current_funccal->rettv->vval.v_number = 0;
+		current_funccal->fc_rettv->v_type = VAR_NUMBER;
+		current_funccal->fc_rettv->vval.v_number = 0;
 	    }
 	}
 	report_make_pending(CSTP_RETURN, rettv);
     }
     else
     {
-	current_funccal->returned = TRUE;
+	current_funccal->fc_returned = TRUE;
 
 	// If the return is carried out now, store the return value.  For
 	// a return immediately after reanimation, the value is already
 	// there.
 	if (!reanimate && rettv != NULL)
 	{
-	    clear_tv(current_funccal->rettv);
-	    *current_funccal->rettv = *(typval_T *)rettv;
+	    clear_tv(current_funccal->fc_rettv);
+	    *current_funccal->fc_rettv = *(typval_T *)rettv;
 	    if (!is_cmd)
 		vim_free(rettv);
 	}
@@ -5961,16 +5962,16 @@
     getline_opt_T options UNUSED)
 {
     funccall_T	*fcp = (funccall_T *)cookie;
-    ufunc_T	*fp = fcp->func;
+    ufunc_T	*fp = fcp->fc_func;
     char_u	*retval;
     garray_T	*gap;  // growarray with function lines
 
     // If breakpoints have been added/deleted need to check for it.
-    if (fcp->dbg_tick != debug_tick)
+    if (fcp->fc_dbg_tick != debug_tick)
     {
-	fcp->breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name,
+	fcp->fc_breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name,
 							       SOURCING_LNUM);
-	fcp->dbg_tick = debug_tick;
+	fcp->fc_dbg_tick = debug_tick;
     }
 #ifdef FEAT_PROFILE
     if (do_profiling == PROF_YES)
@@ -5979,20 +5980,20 @@
 
     gap = &fp->uf_lines;
     if (((fp->uf_flags & FC_ABORT) && did_emsg && !aborted_in_try())
-	    || fcp->returned)
+	    || fcp->fc_returned)
 	retval = NULL;
     else
     {
 	// Skip NULL lines (continuation lines).
-	while (fcp->linenr < gap->ga_len
-			  && ((char_u **)(gap->ga_data))[fcp->linenr] == NULL)
-	    ++fcp->linenr;
-	if (fcp->linenr >= gap->ga_len)
+	while (fcp->fc_linenr < gap->ga_len
+			&& ((char_u **)(gap->ga_data))[fcp->fc_linenr] == NULL)
+	    ++fcp->fc_linenr;
+	if (fcp->fc_linenr >= gap->ga_len)
 	    retval = NULL;
 	else
 	{
-	    retval = vim_strsave(((char_u **)(gap->ga_data))[fcp->linenr++]);
-	    SOURCING_LNUM = fcp->linenr;
+	    retval = vim_strsave(((char_u **)(gap->ga_data))[fcp->fc_linenr++]);
+	    SOURCING_LNUM = fcp->fc_linenr;
 #ifdef FEAT_PROFILE
 	    if (do_profiling == PROF_YES)
 		func_line_start(cookie, SOURCING_LNUM);
@@ -6001,13 +6002,13 @@
     }
 
     // Did we encounter a breakpoint?
-    if (fcp->breakpoint != 0 && fcp->breakpoint <= SOURCING_LNUM)
+    if (fcp->fc_breakpoint != 0 && fcp->fc_breakpoint <= SOURCING_LNUM)
     {
 	dbg_breakpoint(fp->uf_name, SOURCING_LNUM);
 	// Find next breakpoint.
-	fcp->breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name,
+	fcp->fc_breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name,
 							       SOURCING_LNUM);
-	fcp->dbg_tick = debug_tick;
+	fcp->fc_dbg_tick = debug_tick;
     }
 
     return retval;
@@ -6024,8 +6025,9 @@
 
     // Ignore the "abort" flag if the abortion behavior has been changed due to
     // an error inside a try conditional.
-    return (((fcp->func->uf_flags & FC_ABORT) && did_emsg && !aborted_in_try())
-	    || fcp->returned);
+    return (((fcp->fc_func->uf_flags & FC_ABORT)
+					      && did_emsg && !aborted_in_try())
+	    || fcp->fc_returned);
 }
 
 /*
@@ -6035,7 +6037,7 @@
 func_has_abort(
     void    *cookie)
 {
-    return ((funccall_T *)cookie)->func->uf_flags & FC_ABORT;
+    return ((funccall_T *)cookie)->fc_func->uf_flags & FC_ABORT;
 }
 
 
@@ -6143,7 +6145,7 @@
     char_u *
 func_name(void *cookie)
 {
-    return ((funccall_T *)cookie)->func->uf_name;
+    return ((funccall_T *)cookie)->fc_func->uf_name;
 }
 
 /*
@@ -6152,7 +6154,7 @@
     linenr_T *
 func_breakpoint(void *cookie)
 {
-    return &((funccall_T *)cookie)->breakpoint;
+    return &((funccall_T *)cookie)->fc_breakpoint;
 }
 
 /*
@@ -6161,7 +6163,7 @@
     int *
 func_dbg_tick(void *cookie)
 {
-    return &((funccall_T *)cookie)->dbg_tick;
+    return &((funccall_T *)cookie)->fc_dbg_tick;
 }
 
 /*
@@ -6170,7 +6172,7 @@
     int
 func_level(void *cookie)
 {
-    return ((funccall_T *)cookie)->level;
+    return ((funccall_T *)cookie)->fc_level;
 }
 
 /*
@@ -6179,7 +6181,7 @@
     int
 current_func_returned(void)
 {
-    return current_funccal->returned;
+    return current_funccal->fc_returned;
 }
 
     int
@@ -6194,13 +6196,13 @@
 	if (can_free_funccal(*pfc, copyID))
 	{
 	    fc = *pfc;
-	    *pfc = fc->caller;
+	    *pfc = fc->fc_caller;
 	    free_funccal_contents(fc);
 	    did_free = TRUE;
 	    did_free_funccal = TRUE;
 	}
 	else
-	    pfc = &(*pfc)->caller;
+	    pfc = &(*pfc)->fc_caller;
     }
     if (did_free_funccal)
 	// When a funccal was freed some more items might be garbage
@@ -6225,7 +6227,7 @@
     {
 	for (i = 0; i < debug_backtrace_level; i++)
 	{
-	    temp_funccal = funccal->caller;
+	    temp_funccal = funccal->fc_caller;
 	    if (temp_funccal)
 		funccal = temp_funccal;
 	    else
@@ -6243,9 +6245,9 @@
     hashtab_T *
 get_funccal_local_ht()
 {
-    if (current_funccal == NULL || current_funccal->l_vars.dv_refcount == 0)
+    if (current_funccal == NULL || current_funccal->fc_l_vars.dv_refcount == 0)
 	return NULL;
-    return &get_funccal()->l_vars.dv_hashtab;
+    return &get_funccal()->fc_l_vars.dv_hashtab;
 }
 
 /*
@@ -6255,9 +6257,9 @@
     dictitem_T *
 get_funccal_local_var()
 {
-    if (current_funccal == NULL || current_funccal->l_vars.dv_refcount == 0)
+    if (current_funccal == NULL || current_funccal->fc_l_vars.dv_refcount == 0)
 	return NULL;
-    return &get_funccal()->l_vars_var;
+    return &get_funccal()->fc_l_vars_var;
 }
 
 /*
@@ -6267,9 +6269,9 @@
     hashtab_T *
 get_funccal_args_ht()
 {
-    if (current_funccal == NULL || current_funccal->l_vars.dv_refcount == 0)
+    if (current_funccal == NULL || current_funccal->fc_l_vars.dv_refcount == 0)
 	return NULL;
-    return &get_funccal()->l_avars.dv_hashtab;
+    return &get_funccal()->fc_l_avars.dv_hashtab;
 }
 
 /*
@@ -6279,9 +6281,9 @@
     dictitem_T *
 get_funccal_args_var()
 {
-    if (current_funccal == NULL || current_funccal->l_vars.dv_refcount == 0)
+    if (current_funccal == NULL || current_funccal->fc_l_vars.dv_refcount == 0)
 	return NULL;
-    return &get_funccal()->l_avars_var;
+    return &get_funccal()->fc_l_avars_var;
 }
 
 /*
@@ -6290,8 +6292,8 @@
     void
 list_func_vars(int *first)
 {
-    if (current_funccal != NULL && current_funccal->l_vars.dv_refcount > 0)
-	list_hashtable_vars(&current_funccal->l_vars.dv_hashtab,
+    if (current_funccal != NULL && current_funccal->fc_l_vars.dv_refcount > 0)
+	list_hashtable_vars(&current_funccal->fc_l_vars.dv_hashtab,
 							   "l:", FALSE, first);
 }
 
@@ -6304,8 +6306,8 @@
 get_current_funccal_dict(hashtab_T *ht)
 {
     if (current_funccal != NULL
-	    && ht == &current_funccal->l_vars.dv_hashtab)
-	return &current_funccal->l_vars;
+	    && ht == &current_funccal->fc_l_vars.dv_hashtab)
+	return &current_funccal->fc_l_vars;
     return NULL;
 }
 
@@ -6320,11 +6322,11 @@
     hashitem_T	*hi = NULL;
     char_u	*varname;
 
-    if (current_funccal == NULL || current_funccal->func->uf_scoped == NULL)
+    if (current_funccal == NULL || current_funccal->fc_func->uf_scoped == NULL)
       return NULL;
 
     // Search in parent scope, which can be referenced from a lambda.
-    current_funccal = current_funccal->func->uf_scoped;
+    current_funccal = current_funccal->fc_func->uf_scoped;
     while (current_funccal != NULL)
     {
 	ht = find_var_ht(name, &varname);
@@ -6337,9 +6339,9 @@
 		break;
 	    }
 	}
-	if (current_funccal == current_funccal->func->uf_scoped)
+	if (current_funccal == current_funccal->fc_func->uf_scoped)
 	    break;
-	current_funccal = current_funccal->func->uf_scoped;
+	current_funccal = current_funccal->fc_func->uf_scoped;
     }
     current_funccal = old_current_funccal;
 
@@ -6357,11 +6359,11 @@
     hashtab_T	*ht;
     char_u	*varname;
 
-    if (current_funccal == NULL || current_funccal->func->uf_scoped == NULL)
+    if (current_funccal == NULL || current_funccal->fc_func->uf_scoped == NULL)
 	return NULL;
 
     // Search in parent scope which is possible to reference from lambda
-    current_funccal = current_funccal->func->uf_scoped;
+    current_funccal = current_funccal->fc_func->uf_scoped;
     while (current_funccal)
     {
 	ht = find_var_ht(name, &varname);
@@ -6371,9 +6373,9 @@
 	    if (v != NULL)
 		break;
 	}
-	if (current_funccal == current_funccal->func->uf_scoped)
+	if (current_funccal == current_funccal->fc_func->uf_scoped)
 	    break;
-	current_funccal = current_funccal->func->uf_scoped;
+	current_funccal = current_funccal->fc_func->uf_scoped;
     }
     current_funccal = old_current_funccal;
 
@@ -6388,12 +6390,12 @@
 {
     funccall_T	*fc;
 
-    for (fc = previous_funccal; fc != NULL; fc = fc->caller)
+    for (fc = previous_funccal; fc != NULL; fc = fc->fc_caller)
     {
 	fc->fc_copyID = copyID + 1;
-	if (set_ref_in_ht(&fc->l_vars.dv_hashtab, copyID + 1, NULL)
-		|| set_ref_in_ht(&fc->l_avars.dv_hashtab, copyID + 1, NULL)
-		|| set_ref_in_list_items(&fc->l_varlist, copyID + 1, NULL))
+	if (set_ref_in_ht(&fc->fc_l_vars.dv_hashtab, copyID + 1, NULL)
+		|| set_ref_in_ht(&fc->fc_l_avars.dv_hashtab, copyID + 1, NULL)
+		|| set_ref_in_list_items(&fc->fc_l_varlist, copyID + 1, NULL))
 	    return TRUE;
     }
     return FALSE;
@@ -6405,10 +6407,10 @@
     if (fc->fc_copyID != copyID)
     {
 	fc->fc_copyID = copyID;
-	if (set_ref_in_ht(&fc->l_vars.dv_hashtab, copyID, NULL)
-		|| set_ref_in_ht(&fc->l_avars.dv_hashtab, copyID, NULL)
-		|| set_ref_in_list_items(&fc->l_varlist, copyID, NULL)
-		|| set_ref_in_func(NULL, fc->func, copyID))
+	if (set_ref_in_ht(&fc->fc_l_vars.dv_hashtab, copyID, NULL)
+		|| set_ref_in_ht(&fc->fc_l_avars.dv_hashtab, copyID, NULL)
+		|| set_ref_in_list_items(&fc->fc_l_varlist, copyID, NULL)
+		|| set_ref_in_func(NULL, fc->fc_func, copyID))
 	    return TRUE;
     }
     return FALSE;
@@ -6423,13 +6425,13 @@
     funccall_T		*fc;
     funccal_entry_T	*entry;
 
-    for (fc = current_funccal; fc != NULL; fc = fc->caller)
+    for (fc = current_funccal; fc != NULL; fc = fc->fc_caller)
 	if (set_ref_in_funccal(fc, copyID))
 	    return TRUE;
 
     // Also go through the funccal_stack.
     for (entry = funccal_stack; entry != NULL; entry = entry->next)
-	for (fc = entry->top_funccal; fc != NULL; fc = fc->caller)
+	for (fc = entry->top_funccal; fc != NULL; fc = fc->fc_caller)
 	    if (set_ref_in_funccal(fc, copyID))
 		return TRUE;
     return FALSE;
@@ -6500,7 +6502,7 @@
     }
     if (fp != NULL)
     {
-	for (fc = fp->uf_scoped; fc != NULL; fc = fc->func->uf_scoped)
+	for (fc = fp->uf_scoped; fc != NULL; fc = fc->fc_func->uf_scoped)
 	    abort = abort || set_ref_in_funccal(fc, copyID);
     }
 
diff --git a/src/version.c b/src/version.c
index 35184b2..a734b15 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    398,
+/**/
     397,
 /**/
     396,
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 0b50ace..40b23bd 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -5080,12 +5080,12 @@
 	    case ISN_PROF_END:
 		{
 #ifdef FEAT_PROFILE
-		    funccall_T cookie;
-		    ufunc_T	    *cur_ufunc =
+		    funccall_T	cookie;
+		    ufunc_T	*cur_ufunc =
 				    (((dfunc_T *)def_functions.ga_data)
 					       + ectx->ec_dfunc_idx)->df_ufunc;
 
-		    cookie.func = cur_ufunc;
+		    cookie.fc_func = cur_ufunc;
 		    if (iptr->isn_type == ISN_PROF_START)
 		    {
 			func_line_start(&cookie, iptr->isn_lnum);