guestfs: don't fault upon failed vasprintf

* src/guestfs.c (guestfs_perrorf): Handle failed vasprintf.

diff --git a/src/guestfs.c b/src/guestfs.c
index 63e24f0..802c1d2 100644 (file)
--- a/src/guestfs.c
+++ b/src/guestfs.c
@@ -443,9 +443,11 @@ guestfs_perrorf (guestfs_h *g, const char *fs, ...)
   int err = errno;
 
   va_start (args, fs);
   int err = errno;
 
   va_start (args, fs);

-  vasprintf (&msg, fs, args);
+  int err = vasprintf (&msg, fs, args);

   va_end (args);
 
   va_end (args);
 

+  if (err < 0) return;
+

 #ifndef _GNU_SOURCE
   char buf[256];
   strerror_r (err, buf, sizeof buf);
 #ifndef _GNU_SOURCE
   char buf[256];
   strerror_r (err, buf, sizeof buf);