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// Test needle 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:intercept_strlen=false %run %t 2>&1
// There's no interceptor for strcasestr on Windows
// XFAIL: windows-msvc
#define _GNU_SOURCE
#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] = "cba";
__asan_poison_memory_region ((char *)&s2[2], 2);
r = strcasestr(s1, s2);
assert(r == 0);
// CHECK:'s2'{{.*}} <== Memory access at offset {{[0-9]+}} partially overflows this variable
return 0;
}
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