Feature Request: define sighandler_t

[Markus Steinborn]

Hi everybody,

the man-page signal(2) tells me (at least on my system):

       typedef void (*sighandler_t)(int);

       The use of sighandler_t is a GNU extension.  Various versions  
of  libc
       predefine  this  type;  libc4  and  libc5  define  
SignalHandler, glibc
       defines sig_t and, when _GNU_SOURCE is defined, also sighandler_t.

Could you define sighandler_t in the signal package iff _GNU_SOURCE is 
defined?

Greetings from Germany

Markus Steinborn
GNU gv maintainer