1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <cstring> 11 12 #include <cstring> 13 #include <type_traits> 14 15 #include "test_macros.h" 16 17 #ifndef NULL 18 #error NULL not defined 19 #endif 20 21 int main() 22 { 23 std::size_t s = 0; 24 void* vp = 0; 25 const void* vpc = 0; 26 char* cp = 0; 27 const char* cpc = 0; 28 29 ASSERT_SAME_TYPE(void*, decltype(std::memcpy(vp, vpc, s))); 30 ASSERT_SAME_TYPE(void*, decltype(std::memmove(vp, vpc, s))); 31 ASSERT_SAME_TYPE(char*, decltype(std::strcpy(cp, cpc))); 32 ASSERT_SAME_TYPE(char*, decltype(std::strncpy(cp, cpc, s))); 33 ASSERT_SAME_TYPE(char*, decltype(std::strcat(cp, cpc))); 34 ASSERT_SAME_TYPE(char*, decltype(std::strncat(cp, cpc, s))); 35 ASSERT_SAME_TYPE(int, decltype(std::memcmp(vpc, vpc, s))); 36 ASSERT_SAME_TYPE(int, decltype(std::strcmp(cpc, cpc))); 37 ASSERT_SAME_TYPE(int, decltype(std::strncmp(cpc, cpc, s))); 38 ASSERT_SAME_TYPE(int, decltype(std::strcoll(cpc, cpc))); 39 ASSERT_SAME_TYPE(std::size_t, decltype(std::strxfrm(cp, cpc, s))); 40 ASSERT_SAME_TYPE(void*, decltype(std::memchr(vp, 0, s))); 41 ASSERT_SAME_TYPE(char*, decltype(std::strchr(cp, 0))); 42 ASSERT_SAME_TYPE(std::size_t, decltype(std::strcspn(cpc, cpc))); 43 ASSERT_SAME_TYPE(char*, decltype(std::strpbrk(cp, cpc))); 44 ASSERT_SAME_TYPE(char*, decltype(std::strrchr(cp, 0))); 45 ASSERT_SAME_TYPE(std::size_t, decltype(std::strspn(cpc, cpc))); 46 ASSERT_SAME_TYPE(char*, decltype(std::strstr(cp, cpc))); 47 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 48 ASSERT_SAME_TYPE(char*, decltype(std::strtok(cp, cpc))); 49 #endif 50 ASSERT_SAME_TYPE(void*, decltype(std::memset(vp, 0, s))); 51 ASSERT_SAME_TYPE(char*, decltype(std::strerror(0))); 52 ASSERT_SAME_TYPE(std::size_t, decltype(std::strlen(cpc))); 53 54 // These tests fail on systems whose C library doesn't provide a correct overload 55 // set for strchr, strpbrk, strrchr, strstr, and memchr, unless the compiler is 56 // a suitably recent version of Clang. 57 #if !defined(__APPLE__) || defined(_LIBCPP_PREFERRED_OVERLOAD) 58 ASSERT_SAME_TYPE(const void*, decltype(std::memchr(vpc, 0, s))); 59 ASSERT_SAME_TYPE(const char*, decltype(std::strchr(cpc, 0))); 60 ASSERT_SAME_TYPE(const char*, decltype(std::strpbrk(cpc, cpc))); 61 ASSERT_SAME_TYPE(const char*, decltype(std::strrchr(cpc, 0))); 62 ASSERT_SAME_TYPE(const char*, decltype(std::strstr(cpc, cpc))); 63 #endif 64 } 65
