diff options
Diffstat (limited to 'stdlib/on_exit.c')
| -rw-r--r-- | stdlib/on_exit.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/stdlib/on_exit.c b/stdlib/on_exit.c index 5241e0d86f..1dff7ff631 100644 --- a/stdlib/on_exit.c +++ b/stdlib/on_exit.c @@ -15,6 +15,7 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#include <assert.h> #include <stdlib.h> #include "exit.h" #include <sysdep.h> @@ -25,6 +26,10 @@ __on_exit (void (*func) (int status, void *arg), void *arg) { struct exit_function *new; + /* As a QoI issue we detect NULL early with an assertion instead + of a SIGSEGV at program exit when the handler is run (bug 20544). */ + assert (func != NULL); + __libc_lock_lock (__exit_funcs_lock); new = __new_exitfn (&__exit_funcs); |