https://bugzilla.redhat.com/show_bug.cgi?id=653644
[commit] Fix .gdb_index memory corruption
http://sourceware.org/ml/gdb-patches/2010-11/msg00216.html
http://sourceware.org/ml/gdb-cvs/2010-11/msg00080.html

### src/gdb/ChangeLog	2010/11/16 17:38:34	1.12313
### src/gdb/ChangeLog	2010/11/16 22:04:51	1.12314
## -1,3 +1,8 @@
+2010-11-16  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* dwarf2read.c (dw2_forget_cached_source_info): Clear the FULL_NAMES
+	elements after xfree.
+
 2010-11-16  Tom Tromey  <tromey@redhat.com>
 
 	* gdb-add-index.sh: Really remove.
--- gdb-7.2/gdb/dwarf2read.c.orig	2010-11-18 05:28:59.000000000 +0100
+++ gdb-7.2/gdb/dwarf2read.c	2010-11-18 05:30:17.000000000 +0100
@@ -2084,7 +2084,10 @@ dw2_forget_cached_source_info (struct ob
 	  int j;
 
 	  for (j = 0; j < cu->v.quick->lines->num_file_names; ++j)
-	    xfree ((void *) cu->v.quick->full_names[j]);
+	    {
+	      xfree ((void *) cu->v.quick->full_names[j]);
+	      cu->v.quick->full_names[j] = NULL;
+	    }
 	}
     }
 }