Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/pr71965.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children |
line wrap: on
line source
// { dg-do compile { target c++14 } } // { dg-options "-fconcepts" } template <class T> concept bool Destructible() { return false; } template <class T, class...Args> concept bool ConstructibleObject = // Concept evaluation should short-circuit even the template // substitution, so we shouldn't even substitute into the requires // constraint and the unimplemented multi-dimensional new T{...} // initialization. ATM we do, but as long as we don't output the // sorry() message we used to for such constructs when asked not // to issue errors, this shouldn't be a problem for this and // similar cases. Destructible<T>() && requires (Args&&...args) { new T{ (Args&&)args... }; }; int main() { using T = int[2][2]; // GCC has not implemented initialization of multi-dimensional // arrays with new{} expressions. static_assert(!ConstructibleObject<T, T>); }