text: // Test needle overflow in strstr 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 strstr
  // RUN: %env_asan_opts=intercept_strstr=false:replace_str=false:intercept_strlen=false %run %t 2>&1
  
  #include <assert.h>
  #include <string.h>
  #include <sanitizer/asan_interface.h>
  
  int main(int argc, char **argv) {
    char *r = 0;
    char s1[] = "ab";
    char s2[4] = "cab";
    __asan_poison_memory_region ((char *)&s2[2], 2);
    r = strstr(s1, s2);
    // CHECK:'s2'{{.*}} <== Memory access at offset {{[0-9]+}} partially overflows this variable
    assert(r == 0);
    return 0;
  }
  