forked from OSchip/llvm-project
121 lines
4.3 KiB
C++
121 lines
4.3 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++1z -frelaxed-template-template-args %s
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// expected-note@temp_arg_template_cxx1z.cpp:* 1+{{}}
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template<template<int> typename> struct Ti;
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template<template<int...> typename> struct TPi;
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template<template<int, int...> typename> struct TiPi;
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template<template<int..., int...> typename> struct TPiPi; // FIXME: Why is this not ill-formed?
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template<typename T, template<T> typename> struct tT0;
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template<template<typename T, T> typename> struct Tt0;
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template<template<typename> typename> struct Tt;
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template<template<typename, typename...> typename> struct TtPt;
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template<int> struct i;
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template<int, int = 0> struct iDi;
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template<int, int> struct ii;
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template<int...> struct Pi;
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template<int, int, int...> struct iiPi;
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template<int, typename = int> struct iDt;
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template<int, typename> struct it;
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template<typename T, T v> struct t0;
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template<typename...> struct Pt;
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namespace IntParam {
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using ok = Pt<Ti<i>,
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Ti<iDi>,
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Ti<Pi>,
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Ti<iDt>>;
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using err1 = Ti<ii>; // expected-error {{different template parameters}}
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using err2 = Ti<iiPi>; // expected-error {{different template parameters}}
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using err3 = Ti<t0>; // expected-error {{different template parameters}}
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using err4 = Ti<it>; // expected-error {{different template parameters}}
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}
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// These are accepted by the backwards-compatibility "parameter pack in
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// parameter matches any number of parameters in arguments" rule.
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namespace IntPackParam {
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using ok = TPi<Pi>;
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using ok_compat = Pt<TPi<i>, TPi<iDi>, TPi<ii>, TPi<iiPi>>;
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using err1 = TPi<t0>; // expected-error {{different template parameters}}
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using err2 = TPi<iDt>; // expected-error {{different template parameters}}
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using err3 = TPi<it>; // expected-error {{different template parameters}}
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}
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namespace IntAndPackParam {
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using ok = TiPi<Pi>;
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using ok_compat = Pt<TiPi<ii>, TiPi<iDi>, TiPi<iiPi>>;
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using err = TiPi<iDi>;
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}
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namespace DependentType {
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using ok = Pt<tT0<int, i>, tT0<int, iDi>>;
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using err1 = tT0<int, ii>; // expected-error {{different template parameters}}
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using err2 = tT0<short, i>; // FIXME: should this be OK?
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using err2a = tT0<long long, i>; // FIXME: should this be OK (if long long is larger than int)?
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using err2b = tT0<void*, i>; // expected-error {{different template parameters}}
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using err3 = tT0<short, t0>; // expected-error {{different template parameters}}
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using ok2 = Tt0<t0>;
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using err4 = Tt0<it>; // expected-error {{different template parameters}}
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}
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namespace Auto {
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template<template<int> typename T> struct TInt {};
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template<template<int*> typename T> struct TIntPtr {};
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template<template<auto> typename T> struct TAuto {};
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template<template<auto*> typename T> struct TAutoPtr {};
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template<template<decltype(auto)> typename T> struct TDecltypeAuto {};
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template<auto> struct Auto;
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template<auto*> struct AutoPtr;
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template<decltype(auto)> struct DecltypeAuto;
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template<int> struct Int;
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template<int*> struct IntPtr;
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TInt<Auto> ia;
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TInt<AutoPtr> iap; // FIXME: ill-formed (?)
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TInt<DecltypeAuto> ida;
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TInt<Int> ii;
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TInt<IntPtr> iip; // expected-error {{different template parameters}}
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TIntPtr<Auto> ipa;
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TIntPtr<AutoPtr> ipap;
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TIntPtr<DecltypeAuto> ipda;
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TIntPtr<Int> ipi; // expected-error {{different template parameters}}
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TIntPtr<IntPtr> ipip;
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TAuto<Auto> aa;
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TAuto<AutoPtr> aap; // FIXME: ill-formed (?)
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TAuto<Int> ai; // FIXME: ill-formed (?)
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TAuto<IntPtr> aip; // FIXME: ill-formed (?)
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TAutoPtr<Auto> apa;
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TAutoPtr<AutoPtr> apap;
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TAutoPtr<Int> api; // FIXME: ill-formed (?)
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TAutoPtr<IntPtr> apip; // FIXME: ill-formed (?)
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TDecltypeAuto<DecltypeAuto> dada;
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TDecltypeAuto<Int> dai; // FIXME: ill-formed (?)
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TDecltypeAuto<IntPtr> daip; // FIXME: ill-formed (?)
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// FIXME: It's completely unclear what should happen here, but these results
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// seem at least plausible:
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TAuto<DecltypeAuto> ada;
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TAutoPtr<DecltypeAuto> apda;
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// Perhaps this case should be invalid, as there are valid 'decltype(auto)'
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// parameters (such as 'user-defined-type &') that are not valid 'auto'
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// parameters.
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TDecltypeAuto<Auto> daa;
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TDecltypeAuto<AutoPtr> daap; // FIXME: should probably be ill-formed
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int n;
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template<auto A, decltype(A) B = &n> struct SubstFailure;
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TInt<SubstFailure> isf; // FIXME: this should be ill-formed
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TIntPtr<SubstFailure> ipsf;
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}
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