Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/class6.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
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// { dg-do compile { target c++17 } } // { dg-options "-fconcepts" } template<typename T> concept bool One() { return sizeof(T) >= 4; } template<typename T> concept bool Two() { return One<T>() && sizeof(T) >= 8; } // Check that there is no ecsacpe hatch template<Two T> struct S4 { }; template<One T> struct S4<T> { }; // { dg-error "does not specialize" } struct one_type { char x[4]; }; // Constraints are checked even when decls are not instantiatied. S4<one_type>* x4b; // { dg-error "constraint|invalid" } int main() { }