[Bug string/20558] POSIX bcopy/bzero decls do not implement Object Size Checking

["adhemerval.zanella at linaro dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20558

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |adhemerval.zanella at linaro dot o
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--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
From features.h, default if other than _GNU_SOURCE or _DEFAULT_SOURCE is
defined _DEFAULT_SOURCE is used.  This is the case for the compiler usage on
first case (gcc -O2 -D_FORTIFY_SOURCE=2).

Now, if one explicit specific _POSIX_SOURCE (second case), _DEFAULT_SOURCE is
then not defined and then __USE_MISC is also not defined. __USE_MISC sets if
the fortified macros for bzero/bcopy will be used.

This is the expected behavior imho opinion and the way to use the fortified
wrappers for bzero/bcopy is to explicit defines _DEFAULT_SOURCE or __USE_MISC
when _POSIX_SOURCE is used.

This is not a bug IMHO.

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