From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/g++.dg/cpp0x/sfinae3.C | 56 ++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 gcc/testsuite/g++.dg/cpp0x/sfinae3.C (limited to 'gcc/testsuite/g++.dg/cpp0x/sfinae3.C') diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae3.C b/gcc/testsuite/g++.dg/cpp0x/sfinae3.C new file mode 100644 index 000000000..8582ba777 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/sfinae3.C @@ -0,0 +1,56 @@ +// { dg-options -std=c++0x } + +namespace std { template T&& declval(); } + +template + class is_constructible_mini + { + typedef char __one; + typedef struct { char __arr[2]; } __two; + + template + static decltype(::new _Tp1(std::declval<_Args1>()...), __one()) + __test(int); + + template + static __two __test(...); + + public: + static const bool value = sizeof(__test<_Tp, _Args...>(0)) == 1; + }; + +/* +template + class is_constructible_mini<_Tp> + { + typedef char __one; + typedef struct { char __arr[2]; } __two; + + template + static decltype(::new _Tp1, __one()) __test(int); + + template + static __two __test(...); + + public: + static const bool value + = sizeof(__test::type>(0)) == 1; + }; +*/ + +struct A +{ + A(int); +}; + +struct B { }; + +static_assert( is_constructible_mini::value, ""); +static_assert( is_constructible_mini::value, ""); +static_assert( !is_constructible_mini::value, ""); + +static_assert( !is_constructible_mini::value, ""); // doesn't compile without the + // partial specialization + +static_assert( is_constructible_mini::value, ""); +static_assert( is_constructible_mini::value, ""); -- cgit v1.2.3