Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp1z/constexpr-lambda17.C @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 84e7813d76e9 |
children |
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// PR c++/78131 // { dg-do compile { target c++17 } } template <typename TF> constexpr auto f(TF) { return [](auto...) constexpr { return true; }; } // Compiles and works as intended. template <typename T0> void ok_0(T0) { static_assert(f([](auto x) -> decltype(x){})(T0{})); } // Compiles and works as intended. template <typename T0> void ok_1(T0) { constexpr auto a = f([](auto x) -> decltype(x){})(T0{}); if constexpr(a) { } } // Compile-time error! template <typename T0> void fail_0(T0) { if constexpr(f([](auto x) -> decltype(x){})(T0{})) { } }