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 // <stddef.h> 11 12 #include <stddef.h> 13 #include <cassert> 14 #include <type_traits> 15 16 #include "test_macros.h" 17 18 #ifndef NULL 19 #error NULL not defined 20 #endif 21 22 #ifndef offsetof 23 #error offsetof not defined 24 #endif 25 26 int main() 27 { 28 void *p = NULL; 29 assert(!p); 30 31 static_assert(sizeof(size_t) == sizeof(void*), 32 "sizeof(size_t) == sizeof(void*)"); 33 static_assert(std::is_unsigned<size_t>::value, 34 "std::is_unsigned<size_t>::value"); 35 static_assert(std::is_integral<size_t>::value, 36 "std::is_integral<size_t>::value"); 37 static_assert(sizeof(ptrdiff_t) == sizeof(void*), 38 "sizeof(ptrdiff_t) == sizeof(void*)"); 39 static_assert(std::is_signed<ptrdiff_t>::value, 40 "std::is_signed<ptrdiff_t>::value"); 41 static_assert(std::is_integral<ptrdiff_t>::value, 42 "std::is_integral<ptrdiff_t>::value"); 43 static_assert((std::is_same<decltype(nullptr), nullptr_t>::value), 44 "decltype(nullptr) == nullptr_t"); 45 static_assert(sizeof(nullptr_t) == sizeof(void*), 46 "sizeof(nullptr_t) == sizeof(void*)"); 47 #if TEST_STD_VER > 17 48 // P0767 49 static_assert(std::is_trivial<max_align_t>::value, 50 "std::is_trivial<max_align_t>::value"); 51 static_assert(std::is_standard_layout<max_align_t>::value, 52 "std::is_standard_layout<max_align_t>::value"); 53 #else 54 static_assert(std::is_pod<max_align_t>::value, 55 "std::is_pod<max_align_t>::value"); 56 #endif 57 static_assert((std::alignment_of<max_align_t>::value >= 58 std::alignment_of<long long>::value), 59 "std::alignment_of<max_align_t>::value >= " 60 "std::alignment_of<long long>::value"); 61 static_assert(std::alignment_of<max_align_t>::value >= 62 std::alignment_of<long double>::value, 63 "std::alignment_of<max_align_t>::value >= " 64 "std::alignment_of<long double>::value"); 65 static_assert(std::alignment_of<max_align_t>::value >= 66 std::alignment_of<void*>::value, 67 "std::alignment_of<max_align_t>::value >= " 68 "std::alignment_of<void*>::value"); 69 } 70
