[patch] Enable lightweight checks with _GLIBCXX_ASSERTIONS.

[Jonathan Wakely]

On 14/09/15 11:57 +0200, Florian Weimer wrote:
>On 09/10/2015 06:57 PM, Martin Sebor wrote:
>
>>>> There is quite a bit of documentation of _FORTIFY_SOURCE that explains
>>>> its effect on user code.
>>>
>>> I think there are only random blog articles discussing aspects of it,
>>> most of them slightly incorrect or outdated.
>>
>> _FORTIFY_SOURCE is a GLIBC feature test macro. It's documented
>> in <features.h> and mentioned in some of its online manuals.
>> For example:
>>
>> http://man7.org/linux/man-pages/man7/feature_test_macros.7.html
>>
>> or here:
>>
>> http://manpages.ubuntu.com/manpages/hardy/man7/feature_test_macros.7.html
>
>Oh, so there is an out-dated man-page as well. :-/
>
>The fd_set checks added in glibc 2.15 are missing.  That caused some
>backslash because some folks were actually abusing FD_SET and related
>macros.  Nothing too severe, and in the end, we stood our ground.  I
>expect the libstdc++ changes to be similar.
>
>Again, my main argument is that the main users of _FORTIFY_SOURCE are
>distributions, and they would inject whatever preprocessor macro enables
>the new libstdc++ checks anyway, so saving them that work would be
>preferable IMHO.

Would changes like this be suitable for _FORTIFY_SOURCE?


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