[patch] find_and_open_script: Fix failed fdopen

[Jan Kratochvil <jan.kratochvil@redhat.com>]

Hi,

just noticed if fdopen fails find_and_open_script returns generally invalid
result.  I just read the code, not seen in practice.

No regressions on {x86_64,x86_64-m32,i686}-fedorarawhide-linux-gnu.
I will check it in.


Thanks,
Jan


gdb/
2012-01-23  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* cli/cli-cmds.c (find_and_open_script): Handle failure of fdopen.

--- a/gdb/cli/cli-cmds.c
+++ b/gdb/cli/cli-cmds.c
@@ -513,6 +513,17 @@ find_and_open_script (const char *script_file, int search_path,
   do_cleanups (old_cleanups);
 
   *streamp = fdopen (fd, FOPEN_RT);
+  if (*streamp == NULL)
+    {
+      int save_errno = errno;
+
+      if (full_pathp)
+	xfree (*full_pathp);
+      do_cleanups (old_cleanups);
+      errno = save_errno;
+      return 0;
+    }
+
   return 1;
 }