46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
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// RUN: %clang_cc1 -std=c++2a -verify %s
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template<typename, typename>
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constexpr bool is_same = false;
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template<typename T>
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constexpr bool is_same<T, T> = true;
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template<typename T>
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struct DummyTemplate { };
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void func() {
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auto L0 = []<typename T>(T arg) {
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static_assert(is_same<T, int>); // expected-error {{static_assert failed}}
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};
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L0(0);
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L0(0.0); // expected-note {{in instantiation}}
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auto L1 = []<int I> {
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static_assert(I == 5); // expected-error {{static_assert failed}}
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};
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L1.operator()<5>();
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L1.operator()<6>(); // expected-note {{in instantiation}}
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auto L2 = []<template<typename> class T, class U>(T<U> &&arg) {
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static_assert(is_same<T<U>, DummyTemplate<float>>); // // expected-error {{static_assert failed}}
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};
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L2(DummyTemplate<float>());
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L2(DummyTemplate<double>()); // expected-note {{in instantiation}}
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}
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template<typename T> // expected-note {{declared here}}
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struct ShadowMe {
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void member_func() {
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auto L = []<typename T> { }; // expected-error {{'T' shadows template parameter}}
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}
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};
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template<typename T>
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constexpr T outer() {
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return []<T x>() { return x; }.template operator()<123>(); // expected-error {{no matching member function}} \
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expected-note {{candidate template ignored}}
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}
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static_assert(outer<int>() == 123);
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template int *outer<int *>(); // expected-note {{in instantiation}}
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