mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-03 07:10:28 +08:00
Code Issues Packages Projects Releases Wiki Activity

c++: Add testcases from PR c++/69694

Browse Source 
These testcases are compiling successfully since 7.1.

gcc/testsuite/ChangeLog:

	PR c++/69694
	* g++.dg/cpp0x/decltype74.C: New test.
	* g++.dg/cpp0x/decltype75.C: New test.
This commit is contained in:
Patrick Palka 2020-03-20 13:06:21 -04:00
parent 1dfcc3b541
commit a23eff1bd0
3 changed files with 60 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2020-03-20 Patrick Palka <ppalka@redhat.com>
PR c++/69694
* g++.dg/cpp0x/decltype74.C: New test.
* g++.dg/cpp0x/decltype75.C: New test.
2020-03-20 Srinath Parvathaneni <srinath.parvathaneni@arm.com>
Andre Vieira <andre.simoesdiasvieira@arm.com>
Mihail Ionescu <mihail.ionescu@arm.com>

30
gcc/testsuite/g++.dg/cpp0x/decltype74.C Normal file
View File

@ -0,0 +1,30 @@
// PR c++/69694
// { dg-do compile { target c++11 } }
// n3911: TransformationTrait Alias `void_t`
template<typename...> struct make_void { using type = void; };
template<typename... Ts> using void_t = typename make_void<Ts...>::type;
// std::declval<void*&>
void*& declval_void();
template<typename, typename = void> struct Fun;
template<typename R>
struct Fun<R(), void>
{
void fun();
};
template<typename Desc>
struct Fun<Desc, void_t<decltype (declval_void() = Desc::name)>>
: Fun<void()>
{
};
struct Tag { static constexpr void* name = 0; };
template<typename> void a()
{
Fun<Tag>{}.fun();
}
void b() { a<int>(); }

24
gcc/testsuite/g++.dg/cpp0x/decltype75.C Normal file
View File

@ -0,0 +1,24 @@
// PR c++/69694
// This is a reduced version of decltype74.C.
// { dg-do compile { target c++11 } }
template<typename... Ts> using void_t = void;
extern void *declval_void;
template<typename, typename> struct Fun { };
template<typename Desc>
struct Fun<Desc, void_t<decltype (declval_void = Desc::name)>>
{
void fun();
};
struct Tag { static constexpr void* name = 0; };
template<typename> void a()
{
Fun<Tag, void>{}.fun();
}
void b() { a<int>(); }