From: Jim Meyering <meyering@redhat.com>
Date: Wed, 1 Jul 2009 13:45:01 +0000 (+0200)
Subject: Don't dereference or free undefined "msg" upon OOM.
X-Git-Tag: 1.0.55~28
X-Git-Url: http://git.annexia.org/?a=commitdiff_plain;h=202e11543ead0d21a8485879654c927ec95ea7f0;p=libguestfs.git

Don't dereference or free undefined "msg" upon OOM.

* src/guestfs.c (guestfs_error): Handle failing vasprintf.
---

diff --git a/src/guestfs.c b/src/guestfs.c
index 5743a07..87b0d86 100644
--- a/src/guestfs.c
+++ b/src/guestfs.c
@@ -404,9 +404,11 @@ guestfs_error (guestfs_h *g, const char *fs, ...)
   char *msg;
 
   va_start (args, fs);
-  vasprintf (&msg, fs, args);
+  int err = vasprintf (&msg, fs, args);
   va_end (args);
 
+  if (err < 0) return;
+
   if (g->error_cb) g->error_cb (g, g->error_cb_data, msg);
   set_last_error (g, msg);