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1// Test haystack overflow in strstr function2// RUN: %clang_asan %s -o %t && %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s3 4// Test intercept_strstr asan option5// Disable other interceptors because strlen may be called inside strstr6// RUN: %env_asan_opts=intercept_strstr=false:replace_str=false %run %t 2>&17 8#include <assert.h>9#include <string.h>10#include <sanitizer/asan_interface.h>11 12int main(int argc, char **argv) {13  char *r = 0;14  char s2[] = "c";15  char s1[4] = "acb";16  __asan_poison_memory_region ((char *)&s1[2], 2);17  r = strstr(s1, s2);18  // CHECK:'s1'{{.*}} <== Memory access at offset {{[0-9]+}} {{partially overflows this variable|is inside this variable}}19  assert(r == s1 + 1);20  return 0;21}22