69 lines
1.6 KiB
Text
69 lines
1.6 KiB
Text
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// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++20 %t/template_lambdas.cppm -emit-module-interface \
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// RUN: -o %t/lambdas.pcm
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// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use.cpp -fsyntax-only \
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// RUN: -verify
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//
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// RUN: %clang_cc1 -std=c++20 %t/template_lambdas2.cppm -emit-module-interface \
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// RUN: -o %t/lambdas2.pcm
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// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use.cpp -fsyntax-only \
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// RUN: -verify -DUSE_LAMBDA2
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//--- lambdas.h
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auto l1 = []<int I>() constexpr -> int {
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return I;
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};
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auto l2 = []<auto I>() constexpr -> decltype(I) {
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return I;
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};
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auto l3 = []<class T>(auto i) constexpr -> T {
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return T(i);
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};
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auto l4 = []<template<class> class T, class U>(T<U>, auto i) constexpr -> U {
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return U(i);
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};
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//--- template_lambdas.cppm
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module;
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#include "lambdas.h"
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export module lambdas;
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export using ::l1;
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export using ::l2;
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export using ::l3;
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export using ::l4;
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//--- template_lambdas2.cppm
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export module lambdas2;
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export {
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#include "lambdas.h"
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}
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//--- Use.cpp
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// expected-no-diagnostics
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#ifndef USE_LAMBDA2
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import lambdas;
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#else
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import lambdas2;
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#endif
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static_assert(l1.operator()<5>() == 5);
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static_assert(l1.operator()<6>() == 6);
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static_assert(l2.operator()<7>() == 7);
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static_assert(l2.operator()<nullptr>() == nullptr);
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static_assert(l3.operator()<int>(8.4) == 8);
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static_assert(l3.operator()<int>(9.9) == 9);
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template<typename T>
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struct DummyTemplate { };
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static_assert(l4(DummyTemplate<float>(), 12) == 12.0);
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static_assert(l4(DummyTemplate<int>(), 19.8) == 19);
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