| 1 | // Test needle overflow in strstr function |
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| 2 | // RUN: %clang_asan %s -o %t && %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s |
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| 3 | |
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| 4 | // Test intercept_strstr asan option |
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| 5 | // Disable other interceptors because strlen may be called inside strstr |
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| 6 | // RUN: %env_asan_opts=intercept_strstr=false:replace_str=false:intercept_strlen=false %run %t 2>&1 |
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| 7 | |
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| 8 | #include <assert.h> |
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| 9 | #include <string.h> |
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| 10 | #include <sanitizer/asan_interface.h> |
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| 11 | |
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| 12 | int main(int argc, char **argv) { |
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| 13 | char *r = 0; |
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| 14 | char s1[] = "ab" ; |
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| 15 | char s2[4] = "cab" ; |
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| 16 | __asan_poison_memory_region (addr: (char *)&s2[2], size: 2); |
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| 17 | r = strstr(haystack: s1, needle: s2); |
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| 18 | // CHECK:'s2'{{.*}} <== Memory access at offset {{[0-9]+}} partially overflows this variable |
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| 19 | assert(r == 0); |
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| 20 | return 0; |
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| 21 | } |
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| 22 | |
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