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// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sanitizer/msan_interface.h>
int main(void) {
char *p = (char *)alloca(16);
assert(0 == __msan_test_shadow(p, 16));
assert(0 == __msan_test_shadow(p + 15, 1));
memset(p, 0, 16);
assert(-1 == __msan_test_shadow(p, 16));
volatile int x = 0;
char * volatile q = (char *)alloca(42 * x);
assert(-1 == __msan_test_shadow(p, 16));
int r[x];
int *volatile r2 = r;
assert(-1 == __msan_test_shadow(p, 16));
}
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