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https://issues.apache.org/jira/browse/STDCXX-643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12582690#action_12582690
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Martin Sebor commented on STDCXX-643:
-------------------------------------
I agree that testing this is great idea. I think we might as well hardcode the
sizes of all the exception classes for each known compiler into the test itself:
{noformat}
#ifdef __VACPP__
assert (sizeof (std::bad_alloc)) == 2 * sizeof (char*));
assert (sizeof (std::bad_cast)) == 2 * sizeof (char*));
assert (sizeof (std::bad_exception)) == 2 * sizeof (char*));
assert (sizeof (std::bad_typeid)) == 2 * sizeof (char*));
assert (sizeof (std::exception)) == 2 * sizeof (char*));
#elif defined (__HP_aCC)
assert (sizeof (std::bad_alloc)) == sizeof (char*));
assert (sizeof (std::bad_cast)) == sizeof (char*));
assert (sizeof (std::bad_exception)) == sizeof (char*));
assert (sizeof (std::bad_typeid)) == sizeof (char*));
assert (sizeof (std::exception)) == sizeof (char*));
#elif defined __GNUC__
assert (sizeof (std::bad_alloc)) == sizeof (char*));
assert (sizeof (std::bad_cast)) == sizeof (char*));
assert (sizeof (std::bad_exception)) == sizeof (char*));
assert (sizeof (std::bad_typeid)) == sizeof (char*));
assert (sizeof (std::exception)) == sizeof (char*));
#else
// ...
#endif
{noformat}
> std::exception declaration incompatible with implementation provided by
> runtime library on AIX
> ----------------------------------------------------------------------------------------------
>
> Key: STDCXX-643
> URL: https://issues.apache.org/jira/browse/STDCXX-643
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 19. Diagnostics
> Affects Versions: 4.2.0
> Environment: AIX
> Reporter: Travis Vitek
> Fix For: 5.0
>
>
> A description of the problem is available here.
> http://www.nabble.com/19.exceptions.mt.cpp-fails-on-AIX-tf4738595.html
> Essentially we need to add a const char* member to std::exception for AIX.
> Unfortunately the fix is a binary incompatible with previous versions of
> stdcxx.
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