// Test haystack overflow in strcasestr function // RUN: %clang_asan %s -o %t && %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s // Test intercept_strstr asan option // Disable other interceptors because strlen may be called inside strcasestr // RUN: %env_asan_opts=intercept_strstr=false:replace_str=false %run %t 2>&1 // There's no interceptor for strcasestr on Windows // XFAIL: win32 #define _GNU_SOURCE #include #include #include int main(int argc, char **argv) { char *r = 0; char s2[] = "c"; char s1[4] = "abC"; __asan_poison_memory_region ((char *)&s1[2], 2); r = strcasestr(s1, s2); // CHECK:'s1' <== Memory access at offset {{[0-9]+}} partially overflows this variable assert(r == s1 + 2); return 0; }