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