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authorTheo de Raadt <deraadt@cvs.openbsd.org>2005-08-06 18:43:24 +0000
committerTheo de Raadt <deraadt@cvs.openbsd.org>2005-08-06 18:43:24 +0000
commit52ab601dade5c95d578f3f615e453606585cb589 (patch)
tree6c92ce294e0f5a7962fcd982ad536ac0e3b78f49 /lib/libc
parent6ca1bc424ce7a513729277528eaf07b5629c67d3 (diff)
tell people that atexit is bad; ok jmc
Diffstat (limited to 'lib/libc')
-rw-r--r--lib/libc/stdlib/atexit.38
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/libc/stdlib/atexit.3 b/lib/libc/stdlib/atexit.3
index c8d4ce63d51..0af10cfe815 100644
--- a/lib/libc/stdlib/atexit.3
+++ b/lib/libc/stdlib/atexit.3
@@ -29,7 +29,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" $OpenBSD: atexit.3,v 1.5 2003/06/02 20:18:37 millert Exp $
+.\" $OpenBSD: atexit.3,v 1.6 2005/08/06 18:43:23 deraadt Exp $
.\"
.Dd June 29, 1991
.Dt ATEXIT 3
@@ -54,6 +54,12 @@ Functions so registered are called in reverse order;
no arguments are passed.
At least 32 functions can always be registered,
and more are allowed as long as sufficient memory can be allocated.
+.Pp
+.Fn atexit
+is very difficult to use correctly without creating
+.Xr exit 3 Ns -time
+races.
+Unless absolutely neccessary, please avoid using it.
.Sh RETURN VALUES
.Rv -std atexit
.Sh ERRORS