// RUN: %clang_cl_asan -O0 %s -Fe%t
// RUN: %run %t
#include <windows.h>
typedef struct _S {
unsigned int bf1:1;
unsigned int bf2:2;
unsigned int bf3:3;
unsigned int bf4:4;
} S;
int main(void) {
S *s = (S*)malloc(sizeof(S));
s->bf1 = 1;
s->bf2 = 2;
s->bf3 = 3;
s->bf4 = 4;
free(s);
return 0;
}