[Bug c/48916] Falsely reported buffer overrun due to incorrect __builtin_object_size.

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48916

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |jakub at gcc dot gnu.org
         Resolution|                            |INVALID

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-06 12:01:45 UTC ---
This is invalid with -D_FORTIFY_SOURCE=2, valid with -D_FORTIFY_SOURCE=1.
-D_FORTIFY_SOURCE=2 limits what can be crossed, you can't cross fields except
for a few exceptions (flexible array members and flexible-like array member
constructs).  This one isn't considered flexible-like array member.
Either build with -D_FORITYF_SOURCE=1 instead of =2, or use memcpy instead of
strcpy.