[Bug libstdc++/53578] include/ext/concurrence.h relies on ill-formed narrowing conversions

[vanboxem.ruben at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53578

Ruben Van Boxem <vanboxem.ruben at gmail dot com> changed:

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--- Comment #5 from Ruben Van Boxem <vanboxem.ruben at gmail dot com> 2012-06-06 10:25:26 UTC ---
This is not only a <ext/*> problem, but also turns up with `std::unique_ptr`
(so the header <memory>) on Windows. This error is caught by Clang in c++11
mode:
http://llvm.org/bugs/show_bug.cgi?id=12707