| 1 | // Test haystack overflow in strcasestr 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 strcasestr |
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| 6 | // RUN: %env_asan_opts=intercept_strstr=false:replace_str=false %run %t 2>&1 |
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| 7 | |
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| 8 | // There's no interceptor for strcasestr on Windows |
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| 9 | // XFAIL: target={{.*windows-(msvc.*|gnu)}} |
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| 10 | |
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| 11 | #define _GNU_SOURCE |
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| 12 | #include <assert.h> |
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| 13 | #include <string.h> |
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| 14 | #include <sanitizer/asan_interface.h> |
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| 15 | |
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| 16 | int main(int argc, char **argv) { |
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| 17 | char *r = 0; |
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| 18 | char s2[] = "c" ; |
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| 19 | char s1[4] = "abC" ; |
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| 20 | __asan_poison_memory_region (addr: (char *)&s1[2], size: 2); |
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| 21 | r = strcasestr(haystack: s1, needle: s2); |
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| 22 | // CHECK:'s1'{{.*}} <== Memory access at offset {{[0-9]+}} partially overflows this variable |
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| 23 | assert(r == s1 + 2); |
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| 24 | return 0; |
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| 25 | } |
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| 26 | |
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