diff options
| author | Nicolai Hähnle <[email protected]> | 2017-11-17 20:01:50 +0100 |
|---|---|---|
| committer | Nicolai Hähnle <[email protected]> | 2017-11-28 09:31:33 +0100 |
| commit | 7e35bdad1c67d7df2832ac4b39bff471e83812e5 (patch) | |
| tree | 6d27abeb934db063671fb52d3a47b1f0fe81f415 /src/mesa | |
| parent | 1e508e10d9ae649bfe5ab7b1842993be50052b21 (diff) | |
st_glsl_to_tgsi: check for the tail sentinel in merge_two_dsts
This fixes yet another case where DFRACEXP has only one destination. Found
by address sanitizer.
Fixes tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/fs-frexp-dvec4-only-mantissa.shader_test
Fixes: 3b666aa74795 ("st/glsl_to_tgsi: fix DFRACEXP with only one destination")
Acked-by: Marek Olšák <[email protected]>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp index 0772b736275..fa51fef343b 100644 --- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp +++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp @@ -5252,7 +5252,7 @@ glsl_to_tgsi_visitor::merge_two_dsts(void) defined = 0; inst2 = (glsl_to_tgsi_instruction *) inst->next; - do { + while (!inst2->is_tail_sentinel()) { if (inst->op == inst2->op && inst2->dst[defined].file == PROGRAM_UNDEFINED && inst->src[0].file == inst2->src[0].file && @@ -5261,9 +5261,9 @@ glsl_to_tgsi_visitor::merge_two_dsts(void) inst->src[0].swizzle == inst2->src[0].swizzle) break; inst2 = (glsl_to_tgsi_instruction *) inst2->next; - } while (inst2); + } - if (!inst2) { + if (inst2->is_tail_sentinel()) { /* Undefined destinations are not allowed, substitute with an unused * temporary register. */ |