[Bug libstdc++/82254] std::is_nothrow_invocable_r is broken
redi at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Sep 20 14:23:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82254
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Sep 20 14:22:25 2017
New Revision: 253014
URL: https://gcc.gnu.org/viewcvs?rev=253014&root=gcc&view=rev
Log:
PR libstdc++/82254 fix std::is_nothrow_invocable_r w.r.t throwing conversions
PR libstdc++/82254
* include/std/type_traits (__is_invocable): Add partial specialization
for INVOKE<void> case and remove is_void<R> check from partial
specialization for INVOKE<R> case.
(__is_nt_invocable_impl): New helper for is_nothrow_invocable_r.
(is_nothrow_invocable_r): Use __is_nt_invocable_impl.
* testsuite/20_util/is_nothrow_invocable/value.cc: Add tests for
conversions that can throw or fail to convert. Use static assert
strings to explain negative results.
* testsuite/20_util/is_nothrow_invocable/value_ext.cc: Use
is_nothrow_constructible in is_nt_invocable_conv.
Modified:
branches/gcc-7-branch/libstdc++-v3/ChangeLog
branches/gcc-7-branch/libstdc++-v3/include/std/type_traits
branches/gcc-7-branch/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/value.cc
branches/gcc-7-branch/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/value_ext.cc
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