-# stpncpy.m4 serial 11
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
+# stpncpy.m4 serial 13
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2011 Free Software Foundation,
dnl Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl in AIX: dest + max(0,n-1)
dnl Only the glibc return value is useful in practice.
+ AC_CHECK_DECLS_ONCE([stpncpy])
AC_CHECK_FUNCS_ONCE([stpncpy])
if test $ac_cv_func_stpncpy = yes; then
AC_CACHE_CHECK([for working stpncpy], [gl_cv_func_stpncpy], [
- AC_TRY_RUN([
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
#include <stdlib.h>
#include <string.h> /* for strcpy */
/* The stpncpy prototype is missing in <string.h> on AIX 4. */
+#if !HAVE_DECL_STPNCPY
extern char *stpncpy (char *dest, const char *src, size_t n);
-int main () {
+#endif
+int main ()
+{
+ int result = 0;
const char *src = "Hello";
char dest[10];
/* AIX 4.3.3 and AIX 5.1 stpncpy() returns dest+1 here. */
- strcpy (dest, "\377\377\377\377\377\377");
- if (stpncpy (dest, src, 2) != dest + 2) exit(1);
+ {
+ strcpy (dest, "\377\377\377\377\377\377");
+ if (stpncpy (dest, src, 2) != dest + 2)
+ result |= 1;
+ }
/* AIX 4.3.3 and AIX 5.1 stpncpy() returns dest+4 here. */
- strcpy (dest, "\377\377\377\377\377\377");
- if (stpncpy (dest, src, 5) != dest + 5) exit(1);
+ {
+ strcpy (dest, "\377\377\377\377\377\377");
+ if (stpncpy (dest, src, 5) != dest + 5)
+ result |= 2;
+ }
/* AIX 4.3.3 and AIX 5.1 stpncpy() returns dest+6 here. */
- strcpy (dest, "\377\377\377\377\377\377");
- if (stpncpy (dest, src, 7) != dest + 5) exit(1);
- exit(0);
+ {
+ strcpy (dest, "\377\377\377\377\377\377");
+ if (stpncpy (dest, src, 7) != dest + 5)
+ result |= 4;
+ }
+ return result;
}
-], [gl_cv_func_stpncpy=yes], [gl_cv_func_stpncpy=no],
+]])],
+ [gl_cv_func_stpncpy=yes],
+ [gl_cv_func_stpncpy=no],
[AC_EGREP_CPP([Thanks for using GNU], [
#include <features.h>
#ifdef __GNU_LIBRARY__