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re PR c++/65949 (Compiler can not deduce auto type in lambda)

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2017-09-30  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/65949
	* g++.dg/cpp1y/lambda-generic-variadic5.C: New.

From-SVN: r253322
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Paolo Carlini 2017-09-30 20:42:05 +00:00 committed by Paolo Carlini
parent 333cb61200
commit ae3f9c32ae
2 changed files with 66 additions and 0 deletions
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gcc/testsuite/ChangeLog
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2017-09-30 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/65949
* g++.dg/cpp1y/lambda-generic-variadic5.C: New.
2017-09-30 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/68754

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gcc/testsuite/g++.dg/cpp1y/lambda-generic-variadic5.C Normal file
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// PR c++/65949
// { dg-do compile { target c++14 } }
#include <initializer_list>
template<class T, class... Ts>
struct Over : T, Over<Ts...>::type
{
using type = Over;
Over(T f1, Ts... f2)
: T(f1), Over<Ts...>::type(f2...)
{
}
using T::operator();
using Over<Ts...>::type::operator();
};
template<class T>
struct Over<T> : T
{
using type = T;
using T::operator();
};
template <class... Lambdas>
auto CreateLambdas(Lambdas... lambdas)
{
return Over<Lambdas...>(lambdas...);
}
int main()
{
auto mesLambda = CreateLambdas
(
[]()
{
},
[](auto i)
{
(void)i;
},
[](auto... args)
{
auto list = {args...};
for(auto &&a : list)
(void)a;
return 3;
}
);
mesLambda();
mesLambda(1);
mesLambda(12,24,36,48);
}