1*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
2*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
3*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
4*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
5*d21b3d34SFangrui Song 
6*d21b3d34SFangrui Song #include <sanitizer/msan_interface.h>
7*d21b3d34SFangrui Song 
main(int argc,char ** argv)8*d21b3d34SFangrui Song int main(int argc, char **argv) {
9*d21b3d34SFangrui Song   int x;
10*d21b3d34SFangrui Song   int *volatile p = &x;
11*d21b3d34SFangrui Song   return __sanitizer_unaligned_load32(p);
12*d21b3d34SFangrui Song   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
13*d21b3d34SFangrui Song   // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cpp:}}[[@LINE-2]]
14*d21b3d34SFangrui Song   // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
15*d21b3d34SFangrui Song   // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cpp:}}[[@LINE-7]]
16*d21b3d34SFangrui Song }
17