[ https://issues.apache.org/jira/browse/STDCXX-828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12587023#action_12587023 ] 

Eric Lemings commented on STDCXX-828:
-------------------------------------

It's the lhs of the logical OR operator that is firing the assertion.  I suspect the formatted message at file tests/iostream/27.istream.fmat.arith.cpp, line 331is causing buffer overflow with wchar_t type.  Not sure how to [dis]prove that suspicion yet...

> [AMD64] SIGABRT in 27.istream.fmat.arith
> ----------------------------------------
>
>                 Key: STDCXX-828
>                 URL: https://issues.apache.org/jira/browse/STDCXX-828
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 4.2.0
>         Environment: Sun C++ 5.9/Solaris/AMD64
>            Reporter: Martin Sebor
>            Assignee: Eric Lemings
>             Fix For: 4.2.1
>
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> When compiled with Intel C++ 10.0 on Linux/AMD64 or Sun C++ 5.9 on Solaris 10/AMD64, the test [27.istream.fmat.arith.cpp|http://svn.apache.org/repos/asf/stdcxx/trunk/tests/iostream/27.istream.fmat.arith.cpp] abends with SIGABRT. This was observed in 8{D,S}, 12{D,S} and 15D build types, not necessarily consistently on both platforms.
> The same test was also failing in 4.2.0 with Intel C++.

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