Mesa (master): glsl_to_tgsi: Make sure the 'shader' member is always initialized

[Michel Dänzer]

Module: Mesa
Branch: master
Commit: 2bab95973d8ad3a84f62670143d6f26c230d9582
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2bab95973d8ad3a84f62670143d6f26c230d9582

Author: Michel Dänzer <michel.daenzer at amd.com>
Date:   Thu May 15 12:23:16 2014 +0900

glsl_to_tgsi: Make sure the 'shader' member is always initialized

Fixes the valgrind report below and random crashes with piglit on radeonsi.

==30005== Conditional jump or move depends on uninitialised value(s)
==30005==    at 0xB13584E: st_translate_program (st_glsl_to_tgsi.cpp:5100)
==30005==    by 0xB14698B: st_translate_fragment_program (st_program.c:747)
==30005==    by 0xB14777D: st_get_fp_variant (st_program.c:824)
==30005==    by 0xB11219C: get_color_fp_variant (st_cb_drawpixels.c:1042)
==30005==    by 0xB1131AE: st_DrawPixels (st_cb_drawpixels.c:1154)
==30005==    by 0xAFF8806: _mesa_DrawPixels (drawpix.c:162)
==30005==    by 0x4EB86DB: stub_glDrawPixels (generated_dispatch.c:6640)
==30005==    by 0x4F1DF08: piglit_visualize_image (piglit-util-gl.c:1574)
==30005==    by 0x40691D: draw_image_to_window_system_fb(int, bool) (draw-buffers-common.cpp:733)
==30005==    by 0x406C8B: draw_reference_image(bool, bool) (draw-buffers-common.cpp:854)
==30005==    by 0x40722A: piglit_display (alpha-to-coverage-dual-src-blend.cpp:117)
==30005==    by 0x4EA7168: run_test (piglit_fbo_framework.c:52)

Cc: "10.1 10.2" <mesa-stable at lists.freedesktop.org>

Reviewed-by: Brian Paul <brianp at vmware.com>
Reviewed-by: Roland Scheidegger <sroland at vmware.com>

---

 src/mesa/state_tracker/st_glsl_to_tgsi.cpp |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 79d013d..739e108 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -3155,6 +3155,7 @@ glsl_to_tgsi_visitor::glsl_to_tgsi_visitor()
    ctx = NULL;
    prog = NULL;
    shader_program = NULL;
+   shader = NULL;
    options = NULL;
 }
 
@@ -3988,6 +3989,7 @@ get_pixel_transfer_visitor(struct st_fragment_program *fp,
    v->ctx = original->ctx;
    v->prog = prog;
    v->shader_program = NULL;
+   v->shader = NULL;
    v->glsl_version = original->glsl_version;
    v->native_integers = original->native_integers;
    v->options = original->options;
@@ -4118,6 +4120,7 @@ get_bitmap_visitor(struct st_fragment_program *fp,
    v->ctx = original->ctx;
    v->prog = prog;
    v->shader_program = NULL;
+   v->shader = NULL;
    v->glsl_version = original->glsl_version;
    v->native_integers = original->native_integers;
    v->options = original->options;