Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/fn3.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 84e7813d76e9 |
children |
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// { dg-do compile { target c++17_only } } // { dg-options "-fconcepts" } #include <cassert> // Check partial ordering during overload resolution. template<typename T> concept bool C() { return __is_class(T); } template<typename T> concept bool D() { return C<T>() and __is_empty(T); } struct S1 { } s1; struct S2 { int n; } s2; int called = 0; template<C T> void f1(T x) { called = 1;} template<D T> void f1(T x) { called = 2;} int main() { f1(s1); assert(called == 2); f1(s2); assert(called == 1); }