[Bug c/48825] libiberty "psignal" lacks const modifier, failing to compile when HAVE_PSIGNAL is undefined

[fzvqedi at v dot mintemail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48825

--- Comment #11 from Roger Meyer <fzvqedi at v dot mintemail.com> 2011-10-07 
03:21:12 UTC ---
the actual problem leading to this is that the check for psignal doesn't
include the proper feature-test macros

to cite the manpage


SYNOPSIS
       #include <signal.h>

       void psignal(int sig, const char *s);
       void psiginfo(const siginfo_t *pinfo, const char *s);

       extern const char *const sys_siglist[];

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       psignal(): _SVID_SOURCE || _BSD_SOURCE
       psiginfo(): _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
       sys_siglist: _BSD_SOURCE