07f3388fff
This reverts commit a24523ac8dc07f3478311a5969184b922b520395. This is causing significant compile-time regressions for C++ code, see: https://github.com/llvm/llvm-project/pull/126088#issuecomment-2704874202
99 lines
2.2 KiB
C++
99 lines
2.2 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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template<template<typename T> class MetaFun, typename Value>
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struct apply {
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typedef typename MetaFun<Value>::type type;
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};
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template<class T>
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struct add_pointer {
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typedef T* type;
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};
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template<class T>
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struct add_reference {
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typedef T& type;
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};
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int i;
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apply<add_pointer, int>::type ip = &i;
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apply<add_reference, int>::type ir = i;
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apply<add_reference, float>::type fr = i; // expected-error{{non-const lvalue reference to type 'float' cannot bind to a value of unrelated type 'int'}}
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// Template template parameters
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template<int> struct B;
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template<typename T,
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template<T Value> class X> // expected-error{{cannot have type 'float'}}
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// expected-error@-1 {{cannot be narrowed from type 'long long' to 'int'}}
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// expected-note@-2 {{previous template template parameter is here}}
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struct X0 { };
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X0<int, B> x0b1;
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X0<float, B> x0b2; // expected-note{{while substituting}}
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X0<long long, B> x0b3; // expected-note {{has different template parameters}}
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template<template<int V> class TT>
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struct X1 { };
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template<typename T, template<T V> class TT>
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struct X2 {
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X1<TT> x1;
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};
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template<int V> struct X3i { };
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template<long V> struct X3l { };
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X2<int, X3i> x2okay;
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X2<long, X3l> x2okay2;
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template <typename T, template <T, T> class TT, class R = TT<1, 2> >
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struct Comp {
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typedef R r1;
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template <T x, T y> struct gt {
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static const bool result = x > y;
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};
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typedef gt<2, 1> r2;
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};
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template <int x, int y> struct lt {
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static const bool result = x < y;
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};
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Comp<int, lt> c0;
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namespace PR8629 {
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template<template<int> class TT> struct X0
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{
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static void apply();
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};
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template<int> struct Type { };
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template<class T> struct X1
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{
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template<class U> struct Inner;
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template<class U> void g()
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{
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typedef Inner<U> Init;
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X0<Init::template VeryInner>::apply();
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}
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template<int N> void f ()
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{
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g<Type<N> >();
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}
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};
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template<class T> template<class U> struct X1<T>::Inner
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{
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template<int> struct VeryInner {
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};
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};
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struct X1Container
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{
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X1Container()
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{
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simplex_.f<0>();
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}
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X1<double> simplex_;
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};
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}
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