| 1 | // RUN: %clang_dfsan %s -fsanitize-ignorelist=%S/Inputs/flags_abilist.txt -DFORCE_ZERO_LABELS -o %t && %run %t |
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| 2 | // RUN: %clang_dfsan %s -o %t && %run %t |
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| 3 | |
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| 4 | #include <sanitizer/dfsan_interface.h> |
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| 5 | |
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| 6 | #include <assert.h> |
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| 7 | |
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| 8 | int function_to_force_zero(int i, int* out) { |
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| 9 | *out = i; |
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| 10 | return i; |
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| 11 | } |
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| 12 | |
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| 13 | int main(void) { |
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| 14 | int i = 1; |
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| 15 | dfsan_label i_label = 2; |
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| 16 | dfsan_set_label(label: i_label, addr: &i, size: sizeof(i)); |
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| 17 | |
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| 18 | int out = 0; |
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| 19 | int ret = function_to_force_zero(i, out: &out); |
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| 20 | |
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| 21 | #ifdef FORCE_ZERO_LABELS |
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| 22 | assert(dfsan_get_label(out) == 0); |
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| 23 | assert(dfsan_get_label(ret) == 0); |
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| 24 | #else |
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| 25 | assert(dfsan_get_label(out) == i_label); |
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| 26 | assert(dfsan_get_label(ret) == i_label); |
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| 27 | #endif |
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| 28 | |
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| 29 | return 0; |
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| 30 | } |
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| 31 | |
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