constexpr_init.pass.cpp (1082B)
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 // UNSUPPORTED: c++98, c++03, c++11 11 12 // XFAIL: gcc-7 13 14 // <functional> 15 16 // equal_to, not_equal_to, less, et al. 17 18 // Test that these types can be constructed w/o an initializer in a constexpr 19 // context. This is specifically testing gcc.gnu.org/PR83921 20 21 22 #include <functional> 23 #include "test_macros.h" 24 25 template <class T> 26 constexpr bool test_constexpr_context() { 27 std::equal_to<T> eq; 28 ((void)eq); 29 std::not_equal_to<T> neq; 30 ((void)neq); 31 std::less<T> l; 32 ((void)l); 33 std::less_equal<T> le; 34 ((void)le); 35 std::greater<T> g; 36 ((void)g); 37 std::greater_equal<T> ge; 38 ((void)ge); 39 return true; 40 } 41 42 static_assert(test_constexpr_context<int>(), ""); 43 static_assert(test_constexpr_context<void>(), ""); 44 45 46 int main() { 47 48 }