Mesa (master): ralloc: don't write to memory in case of alloc fail.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 47bd6e46fe89e1cce61b11bcaa7b81f807011c23
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=47bd6e46fe89e1cce61b11bcaa7b81f807011c23

Author: Dave Airlie <airlied at redhat.com>
Date:   Wed Apr 17 11:07:49 2013 +1000

ralloc: don't write to memory in case of alloc fail.

For some reason I made this happen under indirect rendering,
I think we might have a leak, valgrind gave out, so I said I'd
fix the basic problem.

NOTE: This is a candidate for stable branches.
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/glsl/ralloc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/glsl/ralloc.c b/src/glsl/ralloc.c
index 59e71c4..0281642 100644
--- a/src/glsl/ralloc.c
+++ b/src/glsl/ralloc.c
@@ -108,6 +108,8 @@ ralloc_size(const void *ctx, size_t size)
 {
    void *block = calloc(1, size + sizeof(ralloc_header));
 
+   if (unlikely(block == NULL))
+      return NULL;
    ralloc_header *info = (ralloc_header *) block;
    ralloc_header *parent = ctx != NULL ? get_header(ctx) : NULL;