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

[redi at gcc dot gnu.org]

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

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-07 
18:13:24 UTC ---
Author: redi
Date: Sat Jul  7 18:13:19 2012
New Revision: 189351

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189351
Log:
    PR libstdc++/53578
    * include/ext/concurrence.h (__recursive_mutex::_S_destroy): Fix
    narrowing conversion.
    * include/std/mutex (__recursive_mutex_base::_S_destroy): Likewise.

Modified:
    branches/gcc-4_7-branch/libstdc++-v3/ChangeLog
    branches/gcc-4_7-branch/libstdc++-v3/include/ext/concurrence.h
    branches/gcc-4_7-branch/libstdc++-v3/include/std/mutex