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 #ifndef NULL 16 #error NULL not defined 17 #endif 18 19 int main() 20 { 21 std::size_t s = 0; 22 void* vp = 0; 23 const void* vpc = 0; 24 char* cp = 0; 25 const char* cpc = 0; 26 static_assert((std::is_same<decltype(std::memcpy(vp, vpc, s)), void*>::value), ""); 27 static_assert((std::is_same<decltype(std::memmove(vp, vpc, s)), void*>::value), ""); 28 static_assert((std::is_same<decltype(std::strcpy(cp, cpc)), char*>::value), ""); 29 static_assert((std::is_same<decltype(std::strncpy(cp, cpc, s)), char*>::value), ""); 30 static_assert((std::is_same<decltype(std::strcat(cp, cpc)), char*>::value), ""); 31 static_assert((std::is_same<decltype(std::strncat(cp, cpc, s)), char*>::value), ""); 32 static_assert((std::is_same<decltype(std::memcmp(vpc, vpc, s)), int>::value), ""); 33 static_assert((std::is_same<decltype(std::strcmp(cpc, cpc)), int>::value), ""); 34 static_assert((std::is_same<decltype(std::strncmp(cpc, cpc, s)), int>::value), ""); 35 static_assert((std::is_same<decltype(std::strcoll(cpc, cpc)), int>::value), ""); 36 static_assert((std::is_same<decltype(std::strxfrm(cp, cpc, s)), std::size_t>::value), ""); 37 static_assert((std::is_same<decltype(std::memchr(vp, 0, s)), void*>::value), ""); 38 static_assert((std::is_same<decltype(std::strchr(cp, 0)), char*>::value), ""); 39 static_assert((std::is_same<decltype(std::strcspn(cpc, cpc)), std::size_t>::value), ""); 40 static_assert((std::is_same<decltype(std::strpbrk(cp, cpc)), char*>::value), ""); 41 static_assert((std::is_same<decltype(std::strrchr(cp, 0)), char*>::value), ""); 42 static_assert((std::is_same<decltype(std::strspn(cpc, cpc)), std::size_t>::value), ""); 43 static_assert((std::is_same<decltype(std::strstr(cp, cpc)), char*>::value), ""); 44 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 45 static_assert((std::is_same<decltype(std::strtok(cp, cpc)), char*>::value), ""); 46 #endif 47 static_assert((std::is_same<decltype(std::memset(vp, 0, s)), void*>::value), ""); 48 static_assert((std::is_same<decltype(std::strerror(0)), char*>::value), ""); 49 static_assert((std::is_same<decltype(std::strlen(cpc)), std::size_t>::value), ""); 50 51 // These tests fail on systems whose C library doesn't provide a correct overload 52 // set for strchr, strpbrk, strrchr, strstr, and memchr, unless the compiler is 53 // a suitably recent version of Clang. 54 #if !defined(__APPLE__) || defined(_LIBCPP_PREFERRED_OVERLOAD) 55 static_assert((std::is_same<decltype(std::memchr(vpc, 0, s)), const void*>::value), ""); 56 static_assert((std::is_same<decltype(std::strchr(cpc, 0)), const char*>::value), ""); 57 static_assert((std::is_same<decltype(std::strpbrk(cpc, cpc)), const char*>::value), ""); 58 static_assert((std::is_same<decltype(std::strrchr(cpc, 0)), const char*>::value), ""); 59 static_assert((std::is_same<decltype(std::strstr(cpc, cpc)), const char*>::value), ""); 60 #endif 61 } 62
