Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/class6.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 | 1830386684a0 |
children |
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// { dg-do compile { target c++17_only } } // { 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" }