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// { dg-options "-std=c++1z -fconcepts" } template<typename T> concept bool C() { return __is_class(T); } template<typename T> requires C<T>() void f(T x) { } // Non-dependent args are checked even in dependent scope. template<typename T> void h(T x) { f(0); // { dg-error "cannot call" } } int main() { f(0); // { dg-error "cannot call" } }