Mesa (master): glsl: fix crash in loop analysis when some controls can' t be determined
Eric Anholt
anholt at kemper.freedesktop.org
Thu Nov 11 18:49:47 UTC 2010
Module: Mesa
Branch: master
Commit: d67df5dd9db1cede92f1b177c890f83809bb4582
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=d67df5dd9db1cede92f1b177c890f83809bb4582
Author: Aras Pranckevicius <aras at unity3d.com>
Date: Thu Sep 30 12:47:31 2010 +0300
glsl: fix crash in loop analysis when some controls can't be determined
Fixes loop-07.frag.
---
src/glsl/loop_controls.cpp | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/glsl/loop_controls.cpp b/src/glsl/loop_controls.cpp
index 2ef3d30..b528810 100644
--- a/src/glsl/loop_controls.cpp
+++ b/src/glsl/loop_controls.cpp
@@ -85,6 +85,9 @@ int
calculate_iterations(ir_rvalue *from, ir_rvalue *to, ir_rvalue *increment,
enum ir_expression_operation op)
{
+ if (from == NULL || to == NULL || increment == NULL)
+ return -1;
+
void *mem_ctx = talloc_init("%s", __func__);
ir_expression *const sub =
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