An obsolete weakness occurs when someone uses deprecated or obsolete functions when building a system. As a programming language evolves, some functions occasionally become obsolete.
These functions are considered obsolete on most systems, and very non-portable.
glibc-2.22/signal/raise.c
The highlighted line of code below is the trigger point of this particular Fedora 23 obsolete weakness.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <signal.h>
#include <errno.h>
/* Raise the signal SIG. */
int
raise (sig)
int sig;
{
__set_errno (ENOSYS);
return -1;
}
weak_alias (raise, gsignal)
stub_warning (raise)
stub_warning (gsignal)