From: Richard Purdie <richard.purdie@linuxfoundation.org>
Date: Mon, 7 Nov 2022 16:26:44 +0000 (+0100)
Subject: Fix NULL filename handling
X-Git-Tag: basepoints/gcc-14~3451
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9aa1b63a5554563b7a3081391358d6cedcabea88;p=thirdparty%2Fgcc.git

Fix NULL filename handling

The previous commit introduced a regression as some Ada tests end up passing
NULL as the filename to remap_filename.  Handle this as before to fix them.

gcc/
	* file-prefix-map.cc (remap_filename): Handle NULL filenames.
---

diff --git a/gcc/file-prefix-map.cc b/gcc/file-prefix-map.cc
index 439586bd2b55..40b10edcf928 100644
--- a/gcc/file-prefix-map.cc
+++ b/gcc/file-prefix-map.cc
@@ -73,7 +73,7 @@ remap_filename (file_prefix_map *maps, const char *filename)
   char *realname;
   size_t name_len;
 
-  if (lbasename (filename) == filename)
+  if (!filename || lbasename (filename) == filename)
     return filename;
 
   realname = lrealpath (filename);