[xemacs-hg @ 2006-11-01 20:25:48 by adrian] fix for ffap crash on Windows (was: [Bug: 21.5-b27] [CRASH] (file-name-directory "1:")) -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2006-11-01 Adrian Aichner <adrian@xemacs.org> * sysdep.c (wcslen): Check for NULL pointer. * sysdep.c (strlwr): Ditto. * nt.c (mswindows_getdcwd): Ditto (actual cause of reported crash). * intl-win32.c (wcscmp): Ditto. * intl-win32.c (wcslen): Ditto. * intl-win32.c (wcsncpy): Ditto. * intl-win32.c (wcscpy): Ditto. * intl-win32.c (wcsdup): Ditto. * fileio.c (Ffile_name_directory): Return Qnil when mswindows_getdcwd returns NULL working directory.

--- a/src/sysdep.c	Tue Oct 31 22:51:31 2006 +0000
+++ b/src/sysdep.c	Wed Nov 01 20:25:50 2006 +0000
@@ -3491,6 +3491,7 @@
 size_t
 wcslen (const wchar_t *s)
 {
+  if (s == NULL) return NULL;
   const wchar_t *p = s;
 
   while (*p++)
@@ -3508,6 +3509,7 @@
 char *
 strlwr (char *s)
 {
+  if (s == NULL) return NULL;
   REGISTER char *c;
 
   for (c = s; *c; c++)