From: Anuj Phogat <anuj.phogat@gmail.com>
Date: Wed, 4 Feb 2015 01:04:45 +0000 (-0800)
Subject: meta: Add assertion check for ctx->Meta->SaveStackDepth
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8d6ae49a8b18ad8006ff8f22caf06bad83b96e6b;p=mesa.git

meta: Add assertion check for ctx->Meta->SaveStackDepth

before using it for derefrencing.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
---

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index dabf9345bb0..fdc4cf1e927 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -823,6 +823,8 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
 void
 _mesa_meta_end(struct gl_context *ctx)
 {
+   assert(ctx->Meta->SaveStackDepth > 0);
+
    struct save_state *save = &ctx->Meta->Save[ctx->Meta->SaveStackDepth - 1];
    const GLbitfield state = save->SavedState;
    int i;