12d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1 27ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out 32d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1 47ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out 57ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov 67ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov#include <sanitizer/msan_interface.h> 77ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov 87ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanovint main(int argc, char **argv) { 97ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov int x; 107ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov int *volatile p = &x; 117ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov return __sanitizer_unaligned_load32(p); 127ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value 137ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-2]] 147ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main' 157ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-7]] 167ad195c7686f7246d6afa36e930884efae42abeeEvgeniy Stepanov} 17