[Bug c/56018] Access to member of unnamed union variable in structure

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56018



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> 2013-01-17 
11:14:13 UTC ---

This has nothing to do with gcc, the header file has:

    union

      {

        /* Used if SA_SIGINFO is not set.  */

        __sighandler_t sa_handler;

        /* Used if SA_SIGINFO is set.  */

        void (*sa_sigaction) (int, siginfo_t *, void *);

      }

    __sigaction_handler;

# define sa_handler     __sigaction_handler.sa_handler

# define sa_sigaction   __sigaction_handler.sa_sigaction



And, using __sigaction_handler.sa_handler in your source file is wrong,

__sigaction_handler is reserved for the implementation (and so is sa_handler in

POSIX if you include signal.h header).