Module: Mesa
Branch: master
Commit: 494e4b8976a48e37e3cb51338ad69e085ea5061a
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=494e4b8976a48e37e3cb51338ad69e085ea5061a

Author: Nicolai Hähnle <[email protected]>
Date:   Fri May 13 01:56:44 2016 -0500

st_glsl_to_tgsi: don't read potentially uninitialized buffer variable

Found by -fsanitize=undefined. Note that this should be a harmless issue in
practice because the inst->op check always dominates anyway.

Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>

---

 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp 
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index b7eaa13..8c6fe79 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -3334,7 +3334,7 @@ glsl_to_tgsi_visitor::visit_ssbo_intrinsic(ir_call *ir)
       inst = (glsl_to_tgsi_instruction *)inst->get_prev();
       if (inst->op == TGSI_OPCODE_UADD)
          inst = (glsl_to_tgsi_instruction *)inst->get_prev();
-   } while (inst && inst->buffer.file == PROGRAM_UNDEFINED && inst->op == op);
+   } while (inst && inst->op == op && inst->buffer.file == PROGRAM_UNDEFINED);
 }
 
 void

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