Mercurial > hg > CbC > CbC_llvm
view clang/test/SemaCXX/vartemplate-lambda.cpp @ 222:81f6424ef0e3 llvm-original
LLVM original branch
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Sun, 18 Jul 2021 22:10:01 +0900 |
parents | 79ff65ed7e25 |
children | c4bab56944e8 |
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// RUN: %clang_cc1 -std=c++14 -fsyntax-only -verify %s template <class> auto fn0 = [] {}; template <typename> void foo0() { fn0<char>(); } template<typename T> auto fn1 = [](auto a) { return a + T(1); }; template<typename T> auto v1 = [](int a = T()) { return a; }(); // expected-error@-1{{cannot initialize a parameter of type 'int' with an rvalue of type 'int *'}} // expected-note@-2{{passing argument to parameter 'a' here}} struct S { template<class T> static constexpr T t = [](int f = T(7)){return f;}(); // expected-error{{constexpr variable 't<int>' must be initialized by a constant expression}} expected-note{{cannot be used in a constant expression}} }; template <typename X> int foo2() { X a = 0x61; fn1<char>(a); (void)v1<int>; (void)v1<int *>; // expected-note{{in instantiation of variable template specialization 'v1' requested here}} (void)S::t<int>; // expected-note{{in instantiation of static data member 'S::t<int>' requested here}} return 0; } template<class C> int foo3() { C::m1(); // expected-error{{type 'long long' cannot be used prior to '::' because it has no members}} return 1; } template<class C> auto v2 = [](int a = foo3<C>()){}; // expected-note{{in instantiation of function template specialization 'foo3<long long>' requested here}} int main() { v2<long long>(); // This line causes foo3<long long> to be instantiated. v2<long long>(2); // This line does not. foo2<int>(); }