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https://issues.apache.org/jira/browse/STDCXX-240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548008
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Travis Vitek commented on STDCXX-240:
-------------------------------------
Gnu C++ has `-fno-exceptions' which undefines the __EXCEPTIONS macro.
VisualAge C++ has `-qnoeh' and `-qnounwind' which undefines the __EXCEPTIONS
macro.
Compaq C++ has `-noexceptions' which undefines __EXCEPTIONS macro.
SGI C++ has `-LANG:exceptions=OFF', which undefines the __EXCEPTIONS macro.
SunPro C++ has `-features=no%except' or `-noex' to disable exception support. I
don't see any way to check this setting at compile time.
Visual C++ has `/GX-' or `/EHs-'. Unfortunately this doesn't disable exception
support in the same way that the other compilers do. If these options are used
and an exception is thrown, destructors are not called as the stack is unwound.
I don't see any way to check this setting at compile time.
> #define _RWSTD_NO_EXCEPTIONS when exceptions are disabled via command line
> option
> ---------------------------------------------------------------------------------
>
> Key: STDCXX-240
> URL: https://issues.apache.org/jira/browse/STDCXX-240
> Project: C++ Standard Library
> Issue Type: Improvement
> Components: Build
> Affects Versions: 4.1.2, 4.1.3, 4.1.4
> Reporter: Martin Sebor
> Assignee: Travis Vitek
> Priority: Minor
> Fix For: 4.2.1
>
>
> Moved from the Rogue Wave bug tracking database:
> Class/File: stdcomp.h
> Fix Priority: Can Fix
> Long Description:
> *** Dec 1 1999 6:03PM *** sebor ***
> A request for enhancement.
> Subject: define RWSTD_NO_EXCEPTIONS when __HPACC_NOEH is
> Date: Wed, 01 Dec 1999 17:11:36 -0800
> From: Chichiang Wan <[EMAIL PROTECTED]>
> Organization: California Language Labs
> To: oemsupport <[EMAIL PROTECTED]>
> CC: [EMAIL PROTECTED], wanc_at_hp <[EMAIL PROTECTED]>
> aCC has an option +noeh. When it is provided, __HPACC_NOEH will be
> defined. It would be nice for users to need to only use +noeh. For
> that,
> RWSTD_NO_EXCEPTIONS needs to be defined conditionally.
> =========================================================
> $ cat test.C
> #include <string>
> $ aCC +noeh -c test.C
> Error 46: "/opt/aCC/include/memory", line 493 # Exception handling is
> not
> enabled (do not use the +noeh flag to aCC).
> RWSTD_THROW_NO_MSG(tmp == 0, bad_alloc);
> -- Chichiang
> ****Modified By: sebor @ May 29, 2000 10:28:25 PM****
> We should do this AND test it -- not just on aCC but in general with all
> compilers that support this feature.
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