[Piglit] [PATCH] ext_framebuffer_multisample: Add NORETURN attribute to print_usage_and_exit.

[Vinson Lee]

Silence clang sometimes-uninitialized warnings.

clip-and-scissor-blit.cpp:362:13: warning: variable 'src_samples' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
        } else if (strcmp(argv[2], "normal") == 0) {
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clip-and-scissor-blit.cpp:369:26: note: uninitialized use occurs here
        src_fbo.setup(FboConfig(src_samples, src_size[0], src_size[1]));
                                ^~~~~~~~~~~
clip-and-scissor-blit.cpp:362:9: note: remove the 'if' if its condition is always true
        } else if (strcmp(argv[2], "normal") == 0) {
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clip-and-scissor-blit.cpp:352:17: note: initialize the variable 'src_samples' to silence this warning
        int src_samples;
                       ^
                        = 0
clip-and-scissor-blit.cpp:362:13: warning: variable 'dst_samples' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
        } else if (strcmp(argv[2], "normal") == 0) {
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clip-and-scissor-blit.cpp:370:26: note: uninitialized use occurs here
        dst_fbo.setup(FboConfig(dst_samples, dst_size[0], dst_size[1]));
                                ^~~~~~~~~~~
clip-and-scissor-blit.cpp:362:9: note: remove the 'if' if its condition is always true
        } else if (strcmp(argv[2], "normal") == 0) {
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clip-and-scissor-blit.cpp:353:17: note: initialize the variable 'dst_samples' to silence this warning
        int dst_samples;
                       ^
                        = 0

Signed-off-by: Vinson Lee <vlee at freedesktop.org>
---
 tests/spec/ext_framebuffer_multisample/clip-and-scissor-blit.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/spec/ext_framebuffer_multisample/clip-and-scissor-blit.cpp b/tests/spec/ext_framebuffer_multisample/clip-and-scissor-blit.cpp
index a9a9304..b48930c 100644
--- a/tests/spec/ext_framebuffer_multisample/clip-and-scissor-blit.cpp
+++ b/tests/spec/ext_framebuffer_multisample/clip-and-scissor-blit.cpp
@@ -312,7 +312,7 @@ do_test(int coord, bool clip_low, test_type_enum test_type,
 						   dst_size[1]);
 }
 
-void
+NORETURN void
 print_usage_and_exit(char *prog_name)
 {
 	printf("Usage: %s <num_samples> <blit_type>\n"
-- 
1.9.1