diff --git a/regress/lib/libc/string/Makefile b/regress/lib/libc/string/Makefile
index d5f5ce98f1d0..c68ba4c9edc2 100644
--- a/regress/lib/libc/string/Makefile
+++ b/regress/lib/libc/string/Makefile
@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.8 2005/12/06 08:14:48 ross Exp $
+# $NetBSD: Makefile,v 1.9 2006/08/12 23:51:12 christos Exp $
 
 SUBDIR+= memchr memmem strcat strchr strcmp strcpy strlen strrchr swab wcsncpy\
-	memcpy
+	memcpy stresep
 
 .include <bsd.subdir.mk>
diff --git a/regress/lib/libc/string/stresep/Makefile b/regress/lib/libc/string/stresep/Makefile
new file mode 100644
index 000000000000..086dd4eba963
--- /dev/null
+++ b/regress/lib/libc/string/stresep/Makefile
@@ -0,0 +1,11 @@
+#	$NetBSD: Makefile,v 1.1 2006/08/12 23:51:12 christos Exp $
+
+NOMAN=		# defined
+
+PROG=		stresep_test
+WARNS?=		3
+
+regress: ${PROG}
+	./${PROG}
+
+.include <bsd.prog.mk>
diff --git a/regress/lib/libc/string/stresep/stresep_test.c b/regress/lib/libc/string/stresep/stresep_test.c
new file mode 100644
index 000000000000..b18f8369ba3c
--- /dev/null
+++ b/regress/lib/libc/string/stresep/stresep_test.c
@@ -0,0 +1,58 @@
+/*	$NetBSD: stresep_test.c,v 1.1 2006/08/12 23:51:12 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2005 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define expect(a) if ((p = stresep(&q, " ", '\\')) == NULL || strcmp(p, a)) { \
+			fprintf(stderr, "failed on line %d: %s != %s\n", \
+			    __LINE__, p, a); \
+			return 1; \
+		  }
+
+int
+main(int argc, char **argv)
+{
+	char brk[] = "foo\\ bar baz bar\\ foo\\  ";
+	char *p, *q = brk;
+	expect("foo bar");
+	expect("baz");
+	expect("bar foo ");
+	return 0;
+}