| 1 | // Test strict_string_checks option in strcmp function |
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| 2 | // RUN: %clang_asan %s -o %t && %run %t 2>&1 |
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| 3 | // RUN: %env_asan_opts=strict_string_checks=false %run %t 2>&1 |
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| 4 | // RUN: %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s |
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| 5 | |
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| 6 | #include <assert.h> |
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| 7 | #include <stdlib.h> |
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| 8 | #include <string.h> |
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| 9 | |
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| 10 | int main(int argc, char **argv) { |
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| 11 | size_t size = 100; |
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| 12 | char fill = 'o'; |
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| 13 | char *s1 = (char*)malloc(size: size); |
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| 14 | memset(s: s1, c: fill, n: size); |
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| 15 | char *s2 = (char*)malloc(size: size); |
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| 16 | memset(s: s2, c: fill, n: size); |
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| 17 | s1[size - 1] = 'z'; |
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| 18 | s2[size - 1] = 'x'; |
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| 19 | int r = strcmp(s1: s1, s2: s2); |
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| 20 | // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}} |
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| 21 | // CHECK: READ of size 101 |
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| 22 | assert(r == 1); |
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| 23 | free(ptr: s1); |
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| 24 | free(ptr: s2); |
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| 25 | return 0; |
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| 26 | } |
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| 27 | |
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