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libstdc++: Clarify static_assert message

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libstdc++-v3/ChangeLog:

	* include/bits/move.h (forward): Change static_assert message
	to be unambiguous about what must be true.
	* testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
	* testsuite/20_util/forward/f_neg.cc: Likewise.
This commit is contained in:
Jonathan Wakely 2021-04-06 16:34:48 +01:00
parent daef4e4d93
commit 41019bfae2
3 changed files with 3 additions and 3 deletions
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2
libstdc++-v3/include/bits/move.h
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@ -87,7 +87,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
forward(typename std::remove_reference<_Tp>::type&& __t) noexcept
{
static_assert(!std::is_lvalue_reference<_Tp>::value, "template argument"
" substituting _Tp is an lvalue reference type");
" substituting _Tp must not be an lvalue reference type");
return static_cast<_Tp&&>(__t);
}

2
libstdc++-v3/testsuite/20_util/forward/c_neg.cc
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@ -17,7 +17,7 @@
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-error "static assertion failed" "" { target *-*-* } 89 }
// { dg-error "must not be an lvalue reference" "" { target *-*-* } 0 }
#include <list>

2
libstdc++-v3/testsuite/20_util/forward/f_neg.cc
View file

@ -17,7 +17,7 @@
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-error "static assertion failed" "" { target *-*-* } 89 }
// { dg-error "must not be an lvalue reference" "" { target *-*-* } 0 }
#include <utility>