2005-04-02  Andrew Cagney  <cagney@gnu.org>

	* symfile.c (separate_debug_file_exists): When the CRCs mismatch
	print a warning.
	(find_separate_debug_file): Pass in the objfile's name.

Index: gdb-6.8.50.20081128/gdb/symfile.c
===================================================================
--- gdb-6.8.50.20081128.orig/gdb/symfile.c	2008-10-03 18:36:10.000000000 +0200
+++ gdb-6.8.50.20081128/gdb/symfile.c	2008-12-01 16:34:36.000000000 +0100
@@ -1296,7 +1296,8 @@ get_debug_link_info (struct objfile *obj
 }
 
 static int
-separate_debug_file_exists (const char *name, unsigned long crc)
+separate_debug_file_exists (const char *name, unsigned long crc,
+			    const char *parent_name)
 {
   unsigned long file_crc = 0;
   bfd *abfd;
@@ -1316,7 +1317,15 @@ separate_debug_file_exists (const char *
 
   bfd_close (abfd);
 
-  return crc == file_crc;
+  if (crc != file_crc)
+    {
+      warning (_("the debug information found in \"%s\""
+		 " does not match \"%s\" (CRC mismatch).\n"),
+	       name, parent_name);
+      return 0;
+    }
+
+  return 1;
 }
 
 char *debug_file_directory = NULL;
@@ -1368,6 +1377,8 @@ find_separate_debug_file (struct objfile
   basename = get_debug_link_info (objfile, &crc32);
 
   if (basename == NULL)
+    /* There's no separate debug info, hence there's no way we could
+       load it => no warning.  */
     return NULL;
 
   dir = xstrdup (objfile->name);
@@ -1395,7 +1406,7 @@ find_separate_debug_file (struct objfile
   strcpy (debugfile, dir);
   strcat (debugfile, basename);
 
-  if (separate_debug_file_exists (debugfile, crc32))
+  if (separate_debug_file_exists (debugfile, crc32, objfile->name))
     {
       xfree (basename);
       xfree (dir);
@@ -1408,7 +1419,7 @@ find_separate_debug_file (struct objfile
   strcat (debugfile, "/");
   strcat (debugfile, basename);
 
-  if (separate_debug_file_exists (debugfile, crc32))
+  if (separate_debug_file_exists (debugfile, crc32, objfile->name))
     {
       xfree (basename);
       xfree (dir);
@@ -1421,7 +1432,7 @@ find_separate_debug_file (struct objfile
   strcat (debugfile, dir);
   strcat (debugfile, basename);
 
-  if (separate_debug_file_exists (debugfile, crc32))
+  if (separate_debug_file_exists (debugfile, crc32, objfile->name))
     {
       xfree (basename);
       xfree (dir);
@@ -1440,7 +1451,7 @@ find_separate_debug_file (struct objfile
       strcat (debugfile, "/");
       strcat (debugfile, basename);
 
-      if (separate_debug_file_exists (debugfile, crc32))
+      if (separate_debug_file_exists (debugfile, crc32, objfile->name))
 	{
 	  xfree (canon_name);
 	  xfree (basename);