[RFA] libiberty/make-relative-prefix.c, save_string, use xmalloc over malloc

[Michael Snyder]

I know the callers of save_string check its return value for null, but
by then it's too late -- we've memcpy'd over a null pointer.

OK?


2011-03-06  Michael Snyder  <msny...@msnyder-server.eng.vmware.com>

        * make-relative-prefix.c (save_string): Use xmalloc over malloc.

Index: make-relative-prefix.c
===================================================================
RCS file: /cvs/src/src/libiberty/make-relative-prefix.c,v
retrieving revision 1.13
diff -u -p -r1.13 make-relative-prefix.c
--- make-relative-prefix.c      3 Feb 2011 07:23:59 -0000       1.13
+++ make-relative-prefix.c      6 Mar 2011 23:25:35 -0000
@@ -103,7 +103,7 @@ static void free_split_directories (char
 static char *
 save_string (const char *s, int len)
 {
-  char *result = (char *) malloc (len + 1);
+  char *result = (char *) xmalloc (len + 1);
 
   memcpy (result, s, len);
   result[len] = 0;