| 1 | // RUN: %clangxx_msan -O0 -g %s -o %t && %run %t |
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| 2 | // RUN: %clangxx_msan -O3 -g %s -o %t && %run %t |
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| 3 | |
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| 4 | #include <assert.h> |
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| 5 | #include <stdlib.h> |
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| 6 | #include <string.h> |
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| 7 | #include <stdio.h> |
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| 8 | #include <sanitizer/msan_interface.h> |
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| 9 | |
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| 10 | int main(void) { |
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| 11 | char *p = (char *)alloca(16); |
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| 12 | assert(0 == __msan_test_shadow(p, 16)); |
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| 13 | assert(0 == __msan_test_shadow(p + 15, 1)); |
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| 14 | |
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| 15 | memset(s: p, c: 0, n: 16); |
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| 16 | assert(-1 == __msan_test_shadow(p, 16)); |
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| 17 | |
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| 18 | volatile int x = 0; |
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| 19 | char * volatile q = (char *)alloca(42 * x); |
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| 20 | assert(-1 == __msan_test_shadow(p, 16)); |
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| 21 | |
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| 22 | int r[x]; |
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| 23 | int *volatile r2 = r; |
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| 24 | assert(-1 == __msan_test_shadow(p, 16)); |
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| 25 | } |
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| 26 | |
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