[Bug libstdc++/49107] [C++0x] incomplete type regression with std::pair

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49107

Paolo Carlini <paolo.carlini at oracle dot com> changed:

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                 CC|                            |paolo.carlini at oracle dot
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--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-05-22 11:50:57 UTC ---
The path is from the noexcept is pair::swap to the noexcept in std::swap. Both
are completely straightforward implementation of the FDIS. Thus, either
something in std::is_constructible or the C++ front-end.