Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts-fn2.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// { dg-do run { target c++2a } } #define assert(E) if (!(E)) __builtin_abort(); template<typename T> concept C = __is_class(T); template<typename T> concept D = __is_empty(T); struct X { } x; struct Y { int n; } y; int called = 0; // Test constrained member definitions template<typename T> struct S1 { void f1() requires C<T> { } void f2() requires C<T> { called = 1; } void f2() requires (!C<T>) { called = 2; } void f3() { called = 1; } void f3() requires C<T> { called = 2; } void f3() requires C<T> && D<T> { called = 3; } void g1() requires C<T> && true; void g2() requires C<T>; void g2() requires (!C<T>); void g3(); void g3() requires C<T>; void g3() requires C<T> and D<T>; template<C U> void h1(U u) { called = 1; } template<C U> void h2(U u); template<C U> void h3(U u) requires D<U>; }; template<C T> struct S2 { void f(T) requires D<T>; }; int main() { S1<X> sx; S1<Y> sy; S1<int> si; // Defined in-class sx.f1(); sx.f2(); assert(called == 1); sx.f3(); assert(called == 3); sy.f1(); sy.f2(); assert(called == 1); sy.f3(); assert(called == 2); si.f2(); assert(called == 2); si.f3(); assert(called == 1); // Member function template tests S1<int> s1i; s1i.h1(x); assert(called == 1); s1i.h2(x); assert(called == 2); s1i.h3(x); assert(called == 3); // Defined out of class. sx.g1(); sx.g2(); assert(called == 1); sx.g3(); assert(called == 3); sy.g1(); sy.g2(); assert(called == 1); sy.g3(); assert(called == 2); si.g2(); assert(called == 2); si.g3(); assert(called == 1); } template<typename T> void S1<T>::g1() requires C<T> and true { } template<typename T> void S1<T>::g2() requires C<T> { called = 1; } template<typename T> void S1<T>::g2() requires (!C<T>) { called = 2; } template<typename T> void S1<T>::g3() { called = 1; } template<typename T> void S1<T>::g3() requires C<T> { called = 2; } template<typename T> void S1<T>::g3() requires C<T> and D<T> { called = 3; } template<typename T> template<C U> void S1<T>::h2(U u) { called = 2; } template<typename T> template<C U> void S1<T>::h3(U u) requires D<U> { called = 3; } template<C T> void S2<T>::f(T t) requires D<T> { called = 4; }