3 files changed, 26 insertions, 21 deletions

diff --git a/src/lib/libc/stdlib/Makefile.inc b/src/lib/libc/stdlib/Makefile.inc
index 80c3e5f5a1..0c0b1499f8 100644
--- a/src/lib/libc/stdlib/Makefile.inc
+++ b/src/lib/libc/stdlib/Makefile.inc
@@ -1,13 +1,14 @@
-#       $OpenBSD: Makefile.inc,v 1.53 2014/05/08 21:43:49 deraadt Exp $
+#       $OpenBSD: Makefile.inc,v 1.54 2014/08/15 04:14:36 guenther Exp $
 
 # stdlib sources
 .PATH: ${LIBCSRCDIR}/arch/${MACHINE_CPU}/stdlib ${LIBCSRCDIR}/stdlib
 
 SRCS+=  a64l.c abort.c atexit.c atoi.c atof.c atol.c atoll.c bsearch.c \
         cfree.c exit.c ecvt.c gcvt.c getenv.c getopt_long.c \
-        getsubopt.c hcreate.c heapsort.c imaxabs.c imaxdiv.c l64a.c llabs.c \
-        lldiv.c lsearch.c malloc.c reallocarray.c merge.c posix_pty.c \
-        qsort.c radixsort.c rand.c random.c realpath.c setenv.c strtoimax.c \
+        getsubopt.c hcreate.c heapsort.c imaxabs.c imaxdiv.c insque.c \
+        l64a.c llabs.c lldiv.c lsearch.c malloc.c reallocarray.c \
+        merge.c posix_pty.c qsort.c radixsort.c rand.c random.c \
+        realpath.c remque.c setenv.c strtoimax.c \
         strtol.c strtoll.c strtonum.c strtoul.c strtoull.c strtoumax.c \
         system.c tfind.c tsearch.c _rand48.c drand48.c erand48.c jrand48.c \
         lcong48.c lrand48.c mrand48.c nrand48.c seed48.c srand48.c qabs.c \
@@ -24,12 +25,6 @@ SRCS+=	abs.c div.c labs.c ldiv.c
 SRCS+=  abs.c div.c labs.c ldiv.c
 .endif
 
-.if (${MACHINE_CPU} == "vax")
-SRCS+=  insque.S remque.S
-.else
-SRCS+=  insque.c remque.c
-.endif
-
 MAN+=   a64l.3 abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 atoll.3 \
         bsearch.3 div.3 ecvt.3 exit.3 getenv.3 getopt.3 getopt_long.3 \
         getsubopt.3 hcreate.3 imaxabs.3 imaxdiv.3 insque.3 labs.3 ldiv.3 \
diff --git a/src/lib/libc/stdlib/insque.c b/src/lib/libc/stdlib/insque.c
index 8724efec74..590ff837b8 100644
--- a/src/lib/libc/stdlib/insque.c
+++ b/src/lib/libc/stdlib/insque.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: insque.c,v 1.2 2005/08/08 08:05:36 espie Exp $        */
+/*      $OpenBSD: insque.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 {
@@ -38,11 +39,16 @@ struct qelem {
 void
 insque(void *entry, void *pred)
 {
-        struct qelem *e = (struct qelem *) entry;
-        struct qelem *p = (struct qelem *) pred;
+        struct qelem *e = entry;
+        struct qelem *p = pred;
 
-        e->q_forw = p->q_forw;
-        e->q_back = p;
-        p->q_forw->q_back = e;
-        p->q_forw = e;
+        if (p == NULL)
+                e->q_forw = e->q_back = NULL;
+        else {
+                e->q_forw = p->q_forw;
+                e->q_back = p;
+                if (p->q_forw != NULL)
+                        p->q_forw->q_back = e;
+                p->q_forw = e;
+        }
 }
diff --git a/src/lib/libc/stdlib/remque.c b/src/lib/libc/stdlib/remque.c
index ae249ae053..71b74b2dce 100644
--- a/src/lib/libc/stdlib/remque.c
+++ b/src/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;
 }