diff --git a/test/demo_termcap.c b/test/demo_termcap.c
index 65c2d13..6e2aba7 100644
--- a/test/demo_termcap.c
+++ b/test/demo_termcap.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 2005-2014,2015 Free Software Foundation, Inc.              *
+ * Copyright 2019-2022,2023 Thomas E. Dickey                                *
+ * Copyright 2005-2016,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -29,7 +30,7 @@
 /*
  * Author: Thomas E. Dickey
  *
- * $Id: demo_termcap.c,v 1.48 2015/08/08 20:25:39 tom Exp $
+ * $Id: demo_termcap.c,v 1.65 2023/05/27 20:13:10 tom Exp $
  *
  * A simple demo of the termcap interface.
  */
@@ -46,9 +47,15 @@
 #endif
 #endif
 
-#ifdef NCURSES_VERSION
+#if defined(NCURSES_VERSION)
+#if HAVE_NCURSES_TERMCAP_H
+#include <ncurses/termcap.h>
+#elif HAVE_TERMCAP_H
 #include <termcap.h>
 #endif
+#endif
+
+static GCC_NORETURN void failed(const char *);
 
 static void
 failed(const char *msg)
@@ -72,8 +79,10 @@
 static bool n_opt = FALSE;
 static bool s_opt = FALSE;
 static bool q_opt = FALSE;
+#ifdef NCURSES_VERSION
 static bool x_opt = FALSE;
 static bool y_opt = FALSE;
+#endif
 
 static char *d_opt;
 static char *e_opt;
@@ -96,10 +105,11 @@
 #define EachCapName(n) n = 33; n < 127; ++n
 
 static char *
-make_dbitem(char *p, char *q)
+make_dbitem(const char *const p, const char *const q)
 {
-    char *result = malloc(strlen(e_opt) + 2 + (size_t) (p - q));
-    sprintf(result, "%s=%.*s", e_opt, (int) (p - q), q);
+    size_t need = strlen(e_opt) + 2 + (size_t) (p - q);
+    char *result = malloc(need);
+    _nc_SPRINTF(result, _nc_SLIMIT(need) "%s=%.*s", e_opt, (int) (p - q), q);
     return result;
 }
 
@@ -150,10 +160,12 @@
 	    db_item++;
 	}
     }
-    printf("** %s\n", result);
+    if (result != 0)
+	printf("** %s\n", result);
     return result;
 }
 
+#if NO_LEAKS
 static void
 free_dblist(void)
 {
@@ -165,6 +177,7 @@
 	db_list = 0;
     }
 }
+#endif /* NO_LEAKS */
 
 static void
 show_string(const char *name, const char *value)
@@ -316,8 +329,6 @@
 static void
 demo_termcap(NCURSES_CONST char *name)
 {
-    unsigned n;
-    NCURSES_CONST char *cap;
     char buffer[1024];
 
     if (db_list) {
@@ -326,6 +337,8 @@
     if (!q_opt)
 	printf("Terminal type \"%s\"\n", name);
     if (tgetent(buffer, name) >= 0) {
+	NCURSES_CONST char *cap;
+	unsigned n;
 
 	if (b_opt) {
 	    for (n = 0;; ++n) {
@@ -356,7 +369,7 @@
 #ifdef NCURSES_VERSION
 	if (x_opt && (my_blob == 0) && y_opt) {
 #if NCURSES_XNAMES
-	    TERMTYPE *term = &(cur_term->type);
+	    TERMTYPE *term = (TERMTYPE *) cur_term;
 	    if (term != 0
 		&& ((NUM_BOOLEANS(term) != BOOLCOUNT)
 		    || (NUM_NUMBERS(term) != NUMCOUNT)
@@ -391,7 +404,8 @@
 static void
 parse_description(const char *input_name)
 {
-    static char empty[1];
+    static char empty[1] =
+    {0};
 
     FILE *fp;
     struct stat sb;
@@ -424,11 +438,13 @@
 	failed("cannot allocate memory for input-file");
     }
 
-    if ((fp = fopen(input_name, "r")) == 0)
+    if ((fp = fopen(input_name, "r")) == 0) {
 	failed("cannot open input-file");
-    len = fread(my_blob, sizeof(char), (size_t) sb.st_size, fp);
-    my_blob[sb.st_size] = '\0';
-    fclose(fp);
+    } else {
+	len = fread(my_blob, sizeof(char), (size_t) sb.st_size, fp);
+	my_blob[sb.st_size] = '\0';
+	fclose(fp);
+    }
 
     /*
      * First, get rid of comments and escaped newlines, as well as repeated
@@ -687,7 +703,6 @@
     size_t count;
     size_t length = 1;
     char **result = 0;
-    char *blob = 0;
     char *unused = 0;
 
     for (pass = 0; pass < 2; ++pass) {
@@ -697,12 +712,12 @@
 		length += chunk;
 	    } else {
 		result[count] = unused;
-		strcpy(unused, list[count]);
+		_nc_STRCPY(unused, list[count], length);
 		unused += chunk;
 	    }
 	}
 	if (pass == 0) {
-	    blob = malloc(length);
+	    char *blob = malloc(length);
 	    result = typeCalloc(char *, count + 1);
 	    unused = blob;
 	    if (blob == 0 || result == 0)
@@ -712,54 +727,72 @@
 
     return result;
 }
-#endif
+
+#if NO_LEAKS
+static void
+free_code_list(char **list)
+{
+    if (list) {
+	free(list[0]);
+	free(list);
+    }
+}
+#endif /* NO_LEAKS */
+#endif /* USE_CODE_LISTS */
 
 static void
-usage(void)
+usage(int ok)
 {
     static const char *msg[] =
     {
-	"Usage: demo_termcap [options] [terminal]",
-	"",
-	"If no options are given, print all (boolean, numeric, string)",
-	"capabilities for the given terminal, using short names.",
-	"",
-	"Options:",
-	" -a       try all names, print capabilities found",
-	" -b       print boolean-capabilities",
-	" -d LIST  colon-separated list of databases to use",
-	" -e NAME  environment variable to set with -d option",
-	" -i NAME  terminal description to use as names for \"-a\" option, etc.",
-	" -n       print numeric-capabilities",
-	" -q       quiet (prints only counts)",
-	" -r COUNT repeat for given count",
-	" -s       print string-capabilities",
-	" -v       print termcap-variables",
+	"Usage: demo_termcap [options] [terminal]"
+	,""
+	,"If no options are given, print all (boolean, numeric, string)"
+	,"capabilities for the given terminal, using short names."
+	,""
+	,USAGE_COMMON
+	,"Options:"
+	," -a       try all names, print capabilities found"
+	," -b       print boolean-capabilities"
+	," -d LIST  colon-separated list of databases to use"
+	," -e NAME  environment variable to set with -d option"
+	," -i NAME  terminal description to use as names for \"-a\" option, etc."
+	," -n       print numeric-capabilities"
+	," -q       quiet (prints only counts)"
+	," -r COUNT repeat for given count"
+	," -s       print string-capabilities"
+	," -v       print termcap-variables"
 #ifdef NCURSES_VERSION
-	" -x       print extended capabilities",
+	," -x       print extended capabilities"
 #endif
     };
     unsigned n;
     for (n = 0; n < SIZEOF(msg); ++n) {
 	fprintf(stderr, "%s\n", msg[n]);
     }
-    ExitProgram(EXIT_FAILURE);
+    ExitProgram(ok ? EXIT_SUCCESS : EXIT_FAILURE);
 }
+/* *INDENT-OFF* */
+VERSION_COMMON()
+/* *INDENT-ON* */
 
 int
 main(int argc, char *argv[])
 {
+    int ch;
     int n;
     char *name;
     bool a_opt = FALSE;
+#if defined(NCURSES_VERSION) || defined(HAVE_CURSES_DATA_OSPEED)
     bool v_opt = FALSE;
+#endif
     char *input_name = 0;
 
     int repeat;
     int r_opt = 1;
 
-    while ((n = getopt(argc, argv, "abd:e:i:nqr:svxy")) != -1) {
-	switch (n) {
+    while ((ch = getopt(argc, argv, OPTS_COMMON "abd:e:i:nqr:svxy")) != -1) {
+	switch (ch) {
 	case 'a':
 	    a_opt = TRUE;
 	    break;
@@ -783,14 +816,17 @@
 	    break;
 	case 'r':
 	    if ((r_opt = atoi(optarg)) <= 0)
-		usage();
+		usage(FALSE);
 	    break;
 	case 's':
 	    s_opt = TRUE;
 	    break;
+#if defined(NCURSES_VERSION) || defined(HAVE_CURSES_DATA_OSPEED)
 	case 'v':
 	    v_opt = TRUE;
 	    break;
+#endif
+#ifdef NCURSES_VERSION
 #if NCURSES_XNAMES
 	case 'x':
 	    x_opt = TRUE;
@@ -800,9 +836,13 @@
 	    x_opt = TRUE;
 	    break;
 #endif
+#endif
+	case OPTS_VERSION:
+	    show_version(argv);
+	    ExitProgram(EXIT_SUCCESS);
 	default:
-	    usage();
-	    break;
+	    usage(ch == OPTS_USAGE);
+	    /* NOTREACHED */
 	}
     }
 
@@ -868,19 +908,25 @@
 	show_number("PC", PC);
 	show_string("UP", UP);
 	show_string("BC", BC);
-	show_number("ospeed", ospeed);
+	show_number("ospeed", (int) ospeed);
     }
 #endif
 
+#if NO_LEAKS
     free_dblist();
+#if USE_CODE_LISTS
+    free_code_list(my_boolcodes);
+    free_code_list(my_numcodes);
+    free_code_list(my_strcodes);
+#endif
+#endif /* NO_LEAKS */
 
     ExitProgram(EXIT_SUCCESS);
 }
 
 #else
 int
-main(int argc GCC_UNUSED,
-     char *argv[]GCC_UNUSED)
+main(void)
 {
     failed("This program requires termcap");
 }