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