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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string.h>
#include <string.h>
#include <cassert>
#include <type_traits>
#include "test_macros.h"
#ifndef NULL
#error NULL not defined
#endif
int main(int, char**)
{
// Functions we get directly from the C library (just check the signature)
{
size_t s = 0;
void* vp = 0;
const void* vpc = 0;
char* cp = 0;
const char* cpc = 0;
ASSERT_SAME_TYPE(void*, decltype(memcpy(vp, vpc, s)));
ASSERT_SAME_TYPE(void*, decltype(memmove(vp, vpc, s)));
ASSERT_SAME_TYPE(char*, decltype(strcpy(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strncpy(cp, cpc, s)));
ASSERT_SAME_TYPE(char*, decltype(strcat(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strncat(cp, cpc, s)));
ASSERT_SAME_TYPE(int, decltype(memcmp(vpc, vpc, s)));
ASSERT_SAME_TYPE(int, decltype(strcmp(cpc, cpc)));
ASSERT_SAME_TYPE(int, decltype(strncmp(cpc, cpc, s)));
ASSERT_SAME_TYPE(int, decltype(strcoll(cpc, cpc)));
ASSERT_SAME_TYPE(size_t, decltype(strxfrm(cp, cpc, s)));
ASSERT_SAME_TYPE(size_t, decltype(strcspn(cpc, cpc)));
ASSERT_SAME_TYPE(size_t, decltype(strspn(cpc, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strtok(cp, cpc)));
ASSERT_SAME_TYPE(void*, decltype(memset(vp, 0, s)));
ASSERT_SAME_TYPE(char*, decltype(strerror(0)));
ASSERT_SAME_TYPE(size_t, decltype(strlen(cpc)));
}
// Functions we (may) reimplement
{
// const char* strchr(const char*, int)
char storage[] = "hello world";
const char* s = storage;
ASSERT_SAME_TYPE(const char*, decltype(strchr(s, 'l')));
const char* res = strchr(s, 'l');
assert(res == &s[2]);
}
{
// char* strchr(char*, int)
char storage[] = "hello world";
char* s = storage;
ASSERT_SAME_TYPE(char*, decltype(strchr(s, 'l')));
char* res = strchr(s, 'l');
assert(res == &s[2]);
}
{
// const char* strpbrk(const char*, const char*)
char storage[] = "hello world";
const char* s = storage;
ASSERT_SAME_TYPE(const char*, decltype(strpbrk(s, "el")));
const char* res = strpbrk(s, "el");
assert(res == &s[1]);
}
{
// char* strpbrk(char*, const char*)
char storage[] = "hello world";
char* s = storage;
ASSERT_SAME_TYPE(char*, decltype(strpbrk(s, "el")));
char* res = strpbrk(s, "el");
assert(res == &s[1]);
}
{
// const char* strrchr(const char*, int)
char storage[] = "hello world";
const char* s = storage;
ASSERT_SAME_TYPE(const char*, decltype(strrchr(s, 'l')));
const char* res = strrchr(s, 'l');
assert(res == &s[9]);
}
{
// char* strrchr(char*, int)
char storage[] = "hello world";
char* s = storage;
ASSERT_SAME_TYPE(char*, decltype(strrchr(s, 'l')));
char* res = strrchr(s, 'l');
assert(res == &s[9]);
}
{
// const void* memchr(const void*, int, size_t)
char storage[] = "hello world";
size_t count = 11;
const void* s = storage;
ASSERT_SAME_TYPE(const void*, decltype(memchr(s, 'l', count)));
const void* res = memchr(s, 'l', count);
assert(res == &storage[2]);
}
{
// void* memchr(void*, int, size_t)
char storage[] = "hello world";
size_t count = 11;
void* s = storage;
ASSERT_SAME_TYPE(void*, decltype(memchr(s, 'l', count)));
void* res = memchr(s, 'l', count);
assert(res == &storage[2]);
}
{
// const char* strstr(const char*, const char*)
char storage[] = "hello world";
const char* s = storage;
ASSERT_SAME_TYPE(const char*, decltype(strstr(s, "wor")));
const char* res = strstr(s, "wor");
assert(res == &storage[6]);
}
{
// char* strstr(char*, const char*)
char storage[] = "hello world";
char* s = storage;
ASSERT_SAME_TYPE(char*, decltype(strstr(s, "wor")));
char* res = strstr(s, "wor");
assert(res == &storage[6]);
}
return 0;
}
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