diff options
Diffstat (limited to 'lib/libc/stdlib/remque.c')
| -rw-r--r-- | lib/libc/stdlib/remque.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/libc/stdlib/remque.c b/lib/libc/stdlib/remque.c index ae249ae0538..71b74b2dce0 100644 --- a/lib/libc/stdlib/remque.c +++ b/lib/libc/stdlib/remque.c @@ -1,4 +1,4 @@ -/* $OpenBSD: remque.c,v 1.2 2005/08/08 08:05:37 espie Exp $ */ +/* $OpenBSD: remque.c,v 1.3 2014/08/15 04:14:36 guenther Exp $ */ /* * Copyright (c) 1993 John Brezak @@ -28,6 +28,7 @@ * POSSIBILITY OF SUCH DAMAGE. */ +#include <stdlib.h> #include <search.h> struct qelem { @@ -38,7 +39,10 @@ struct qelem { void remque(void *element) { - struct qelem *e = (struct qelem *) element; - e->q_forw->q_back = e->q_back; - e->q_back->q_forw = e->q_forw; + struct qelem *e = element; + + if (e->q_forw != NULL) + e->q_forw->q_back = e->q_back; + if (e->q_back != NULL) + e->q_back->q_forw = e->q_forw; } |