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// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
#include <sanitizer/msan_interface.h>
int main(int argc, char **argv) {
int x;
int *volatile p = &x;
return __sanitizer_unaligned_load32(p);
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-2]]
// CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
// CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-7]]
}
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