gdb/

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

gdb/testsuite/
	* gdb.base/sepdebug.exp (CRC mismatch is reported): New test.
	* gdb.base/sepdebug2.c: New file.

5 files changed, 67 insertions, 6 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0749cd5..0a92fb6 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2009-11-02  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.
+
 2009-11-02  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	Remove INVALID_ENTRY_POINT.
diff --git a/gdb/symfile.c b/gdb/symfile.c
index 5ace773..75cb0f8 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -1283,7 +1283,8 @@ get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out)
 }
 
 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;
@@ -1303,7 +1304,15 @@ separate_debug_file_exists (const char *name, unsigned long crc)
 
   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;
@@ -1355,6 +1364,8 @@ find_separate_debug_file (struct objfile *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);
@@ -1388,7 +1399,7 @@ find_separate_debug_file (struct objfile *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);
@@ -1402,7 +1413,7 @@ find_separate_debug_file (struct objfile *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);
@@ -1416,7 +1427,7 @@ find_separate_debug_file (struct objfile *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);
@@ -1435,7 +1446,7 @@ find_separate_debug_file (struct objfile *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);
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 87ef634..5a5410a 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2009-11-02  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* gdb.base/sepdebug.exp (CRC mismatch is reported): New test.
+	* gdb.base/sepdebug2.c: New file.
+
 2009-10-31  Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com>
 
 	* gdb.base/catch-syscall.exp: Adapt the testcase in order to accept
diff --git a/gdb/testsuite/gdb.base/sepdebug.exp b/gdb/testsuite/gdb.base/sepdebug.exp
index 0962767..01d64ad 100644
--- a/gdb/testsuite/gdb.base/sepdebug.exp
+++ b/gdb/testsuite/gdb.base/sepdebug.exp
@@ -952,6 +952,23 @@ set debugfile "${objdir}/${subdir}/${testfile}.debug"
 test_different_dir debuglink "${objdir}/${subdir}" 0
 
 
+# Test CRC mismatch is reported.
+
+if {[build_executable sepdebug.exp sepdebug2 sepdebug2.c debug] != -1
+    && ![gdb_gnu_strip_debug ${objdir}/${subdir}/sepdebug2]} {
+
+    remote_exec build "cp ${debugfile} ${objdir}/${subdir}/.debug/sepdebug2.debug"
+
+    gdb_exit
+    gdb_start
+    gdb_reinitialize_dir $srcdir/$subdir
+
+    set escapedobjdirsubdir [string_to_regexp ${objdir}/${subdir}]
+
+    gdb_test "file ${objdir}/${subdir}/sepdebug2" "warning: the debug information found in \"${escapedobjdirsubdir}/\\.debug/sepdebug2\\.debug\" does not match \"${escapedobjdirsubdir}/sepdebug2\" \\(CRC mismatch\\)\\..*\\(no debugging symbols found\\).*" "CRC mismatch is reported"
+}
+
+
 # NT_GNU_BUILD_ID / .note.gnu.build-id test:
 
 set build_id_debug_filename [build_id_debug_filename_get $binfile]
diff --git a/gdb/testsuite/gdb.base/sepdebug2.c b/gdb/testsuite/gdb.base/sepdebug2.c
new file mode 100644
index 0000000..74717ac
--- /dev/null
+++ b/gdb/testsuite/gdb.base/sepdebug2.c
@@ -0,0 +1,22 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2009 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+int
+main (void)
+{
+  return 0;
+}