[Piglit] [PATCH] gl-1.0-blend-func: Fix GCC maybe-uninitialized warnings.

[Vinson Lee]

blend.c: In function 'run_factor_set':
blend.c:503:42: warning: 'df[3]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[3] = CLAMP(src[3] * sf[3] + dst[3] * df[3], 0.0f, 1.0f);
                                          ^
blend.c:255:15: note: 'df[3]' was declared here
  float sf[4], df[4];
               ^
blend.c:503:25: warning: 'sf[3]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[3] = CLAMP(src[3] * sf[3] + dst[3] * df[3], 0.0f, 1.0f);
                         ^
blend.c:255:8: note: 'sf[3]' was declared here
  float sf[4], df[4];
        ^
blend.c:485:25: warning: 'df[2]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[2] = CLAMP(dst[2] * df[2] - src[2] * sf[2], 0.0f, 1.0f);
                         ^
blend.c:255:15: note: 'df[2]' was declared here
  float sf[4], df[4];
               ^
blend.c:484:25: warning: 'df[1]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[1] = CLAMP(dst[1] * df[1] - src[1] * sf[1], 0.0f, 1.0f);
                         ^
blend.c:255:15: note: 'df[1]' was declared here
  float sf[4], df[4];
               ^
blend.c:473:42: warning: 'df[0]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[0] = CLAMP(src[0] * sf[0] + dst[0] * df[0], 0.0f, 1.0f);
                                          ^
blend.c:255:15: note: 'df[0]' was declared here
  float sf[4], df[4];
               ^
blend.c:485:42: warning: 'sf[2]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[2] = CLAMP(dst[2] * df[2] - src[2] * sf[2], 0.0f, 1.0f);
                                          ^
blend.c:255:8: note: 'sf[2]' was declared here
  float sf[4], df[4];
        ^
blend.c:484:42: warning: 'sf[1]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[1] = CLAMP(dst[1] * df[1] - src[1] * sf[1], 0.0f, 1.0f);
                                          ^
blend.c:255:8: note: 'sf[1]' was declared here
  float sf[4], df[4];
        ^
blend.c:473:25: warning: 'sf[0]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   dst[0] = CLAMP(src[0] * sf[0] + dst[0] * df[0], 0.0f, 1.0f);
                         ^
blend.c:255:8: note: 'sf[0]' was declared here
  float sf[4], df[4];
        ^

Signed-off-by: Vinson Lee <vlee at freedesktop.org>
---
 tests/spec/gl-1.0/blend.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/spec/gl-1.0/blend.c b/tests/spec/gl-1.0/blend.c
index 9fe345c..34a79b4 100644
--- a/tests/spec/gl-1.0/blend.c
+++ b/tests/spec/gl-1.0/blend.c
@@ -252,7 +252,8 @@ apply_blend(GLenum src_factor_rgb, GLenum src_factor_a,
 	    float* dst, const float* src,
 	    const GLfloat constant_color[4])
 {
-	float sf[4], df[4];
+	float sf[4] = { 0 };
+	float df[4] = { 0 };
 
 	if (op_rgb != GL_MIN && op_rgb != GL_MAX) {
 		/* Src RGB term */
-- 
2.2.0