diff --git a/libc/upstream-openbsd/android/include/openbsd-compat.h b/libc/upstream-openbsd/android/include/openbsd-compat.h
index afd1077..878f71c 100644
--- a/libc/upstream-openbsd/android/include/openbsd-compat.h
+++ b/libc/upstream-openbsd/android/include/openbsd-compat.h
@@ -19,6 +19,8 @@
 #define _BSD_SOURCE
 #include <sys/cdefs.h>
 
+#include <unistd.h> // For environ.
+
 #include <stddef.h> // For size_t.
 
 #include <sys/random.h> // For getentropy.
diff --git a/libc/upstream-openbsd/lib/libc/crypt/arc4random_uniform.c b/libc/upstream-openbsd/lib/libc/crypt/arc4random_uniform.c
index 23a15e3..a18b5b1 100644
--- a/libc/upstream-openbsd/lib/libc/crypt/arc4random_uniform.c
+++ b/libc/upstream-openbsd/lib/libc/crypt/arc4random_uniform.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_uniform.c,v 1.2 2015/09/13 08:31:47 guenther Exp $	*/
+/*	$OpenBSD: arc4random_uniform.c,v 1.3 2019/01/20 02:59:07 bcook Exp $	*/
 
 /*
  * Copyright (c) 2008, Damien Miller <djm@openbsd.org>
@@ -16,7 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <sys/types.h>
+#include <stdint.h>
 #include <stdlib.h>
 
 /*
diff --git a/libc/upstream-openbsd/lib/libc/gen/alarm.c b/libc/upstream-openbsd/lib/libc/gen/alarm.c
index 8bca23a..f15dd15 100644
--- a/libc/upstream-openbsd/lib/libc/gen/alarm.c
+++ b/libc/upstream-openbsd/lib/libc/gen/alarm.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: alarm.c,v 1.8 2016/01/28 16:40:54 schwarze Exp $ */
+/*	$OpenBSD: alarm.c,v 1.9 2019/06/28 13:32:41 deraadt Exp $ */
 /*
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -40,7 +40,7 @@
 	timerclear(&itp->it_interval);
 	itp->it_value.tv_sec = secs;
 	itp->it_value.tv_usec = 0;
-	if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
+	if (setitimer(ITIMER_REAL, itp, &oitv) == -1)
 		return ((unsigned int) -1);
 	if (oitv.it_value.tv_usec)
 		oitv.it_value.tv_sec++;
diff --git a/libc/upstream-openbsd/lib/libc/gen/charclass.h b/libc/upstream-openbsd/lib/libc/gen/charclass.h
index 5edb2c1..073baf6 100644
--- a/libc/upstream-openbsd/lib/libc/gen/charclass.h
+++ b/libc/upstream-openbsd/lib/libc/gen/charclass.h
@@ -1,7 +1,7 @@
 /*
- * Public domain, 2008, Todd C. Miller <Todd.Miller@courtesan.com>
+ * Public domain, 2008, Todd C. Miller <millert@openbsd.org>
  *
- * $OpenBSD: charclass.h,v 1.1 2008/10/01 23:04:13 millert Exp $
+ * $OpenBSD: charclass.h,v 1.2 2019/01/25 00:19:25 millert Exp $
  */
 
 /*
diff --git a/libc/upstream-openbsd/lib/libc/gen/ftok.c b/libc/upstream-openbsd/lib/libc/gen/ftok.c
index 387b80f..ea1edf1 100644
--- a/libc/upstream-openbsd/lib/libc/gen/ftok.c
+++ b/libc/upstream-openbsd/lib/libc/gen/ftok.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ftok.c,v 1.8 2014/11/15 22:38:47 guenther Exp $ */
+/*	$OpenBSD: ftok.c,v 1.9 2019/06/28 13:32:41 deraadt Exp $ */
 /*
  * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
  * All rights reserved.
@@ -34,7 +34,7 @@
 {
 	struct stat st;
 
-	if (stat(path, &st) < 0)
+	if (stat(path, &st) == -1)
 		return (key_t)-1;
 
 	return (key_t)
diff --git a/libc/upstream-openbsd/lib/libc/gen/setprogname.c b/libc/upstream-openbsd/lib/libc/gen/setprogname.c
index ec3189f..bce4cbd 100644
--- a/libc/upstream-openbsd/lib/libc/gen/setprogname.c
+++ b/libc/upstream-openbsd/lib/libc/gen/setprogname.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: setprogname.c,v 1.5 2016/03/13 18:34:20 guenther Exp $ */
+/* $OpenBSD: setprogname.c,v 1.6 2017/09/17 06:38:03 otto Exp $ */
 /*
  * Copyright (c) 2013 Antoine Jacoutot <ajacoutot@openbsd.org>
  *
@@ -21,11 +21,11 @@
 void
 setprogname(const char *progname)
 {
-	const char *tmpn;
+	char *tmpn;
 
 	tmpn = strrchr(progname, '/');
 	if (tmpn == NULL)
-		__progname = progname;
+		__progname = (char *)progname;
 	else
 		__progname = tmpn + 1;
 }
diff --git a/libc/upstream-openbsd/lib/libc/locale/wcsxfrm.c b/libc/upstream-openbsd/lib/libc/locale/wcsxfrm.c
index 98db4a9..3d1e580 100644
--- a/libc/upstream-openbsd/lib/libc/locale/wcsxfrm.c
+++ b/libc/upstream-openbsd/lib/libc/locale/wcsxfrm.c
@@ -1,6 +1,5 @@
-/*	$OpenBSD: wcsxfrm.c,v 1.2 2012/12/05 23:20:00 deraadt Exp $ */
-/*	$OpenBSD: wcsxfrm.c,v 1.2 2012/12/05 23:20:00 deraadt Exp $	*/
-/*	$NetBSD: multibyte_sb.c,v 1.4 2003/08/07 16:43:04 agc Exp $	*/
+/*	$OpenBSD: wcsxfrm.c,v 1.3 2017/09/05 03:16:13 schwarze Exp $ */
+/*	$NetBSD: multibyte_sb.c,v 1.4 2003/08/07 16:43:04 agc Exp $ */
 
 /*
  * Copyright (c) 1991 The Regents of the University of California.
@@ -40,3 +39,4 @@
 		return wcslen(src);
 	return wcslcpy(dest, src, n);
 }
+DEF_STRONG(wcsxfrm);
diff --git a/libc/upstream-openbsd/lib/libc/stdio/makebuf.c b/libc/upstream-openbsd/lib/libc/stdio/makebuf.c
index 56e5f21..b771a40 100644
--- a/libc/upstream-openbsd/lib/libc/stdio/makebuf.c
+++ b/libc/upstream-openbsd/lib/libc/stdio/makebuf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: makebuf.c,v 1.9 2015/01/13 07:18:21 guenther Exp $ */
+/*	$OpenBSD: makebuf.c,v 1.10 2019/06/28 13:32:42 deraadt Exp $ */
 /*-
  * Copyright (c) 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -81,7 +81,7 @@
 {
 	struct stat st;
 
-	if (fp->_file < 0 || fstat(fp->_file, &st) < 0) {
+	if (fp->_file < 0 || fstat(fp->_file, &st) == -1) {
 		*couldbetty = 0;
 		*bufsize = BUFSIZ;
 		return (__SNPT);
diff --git a/libc/upstream-openbsd/lib/libc/stdio/mktemp.c b/libc/upstream-openbsd/lib/libc/stdio/mktemp.c
index 4b81d5d..ef9a183 100644
--- a/libc/upstream-openbsd/lib/libc/stdio/mktemp.c
+++ b/libc/upstream-openbsd/lib/libc/stdio/mktemp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mktemp.c,v 1.38 2015/09/13 08:31:47 guenther Exp $ */
+/*	$OpenBSD: mktemp.c,v 1.39 2017/11/28 06:55:49 tb Exp $ */
 /*
  * Copyright (c) 1996-1998, 2008 Theo de Raadt
  * Copyright (c) 1997, 2008-2009 Todd C. Miller
@@ -119,7 +119,7 @@
 }
 
 __warn_references(mktemp,
-    "warning: mktemp() possibly used unsafely; consider using mkstemp()");
+    "mktemp() possibly used unsafely; consider using mkstemp()");
 
 char *
 mktemp(char *path)
diff --git a/libc/upstream-openbsd/lib/libc/stdio/tempnam.c b/libc/upstream-openbsd/lib/libc/stdio/tempnam.c
index 854b871..d2c848c 100644
--- a/libc/upstream-openbsd/lib/libc/stdio/tempnam.c
+++ b/libc/upstream-openbsd/lib/libc/stdio/tempnam.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tempnam.c,v 1.19 2015/08/31 02:53:57 guenther Exp $ */
+/*	$OpenBSD: tempnam.c,v 1.20 2017/11/28 06:55:49 tb Exp $ */
 /*
  * Copyright (c) 1988, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -37,7 +37,7 @@
 #include <unistd.h>
 
 __warn_references(tempnam,
-    "warning: tempnam() possibly used unsafely; consider using mkstemp()");
+    "tempnam() possibly used unsafely; consider using mkstemp()");
 
 char *
 tempnam(const char *dir, const char *pfx)
diff --git a/libc/upstream-openbsd/lib/libc/stdio/tmpnam.c b/libc/upstream-openbsd/lib/libc/stdio/tmpnam.c
index d6dc10e..52cd43d 100644
--- a/libc/upstream-openbsd/lib/libc/stdio/tmpnam.c
+++ b/libc/upstream-openbsd/lib/libc/stdio/tmpnam.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tmpnam.c,v 1.11 2015/08/31 02:53:57 guenther Exp $ */
+/*	$OpenBSD: tmpnam.c,v 1.12 2017/11/28 06:55:49 tb Exp $ */
 /*-
  * Copyright (c) 1990, 1993, 1994
  *	The Regents of the University of California.  All rights reserved.
@@ -37,7 +37,7 @@
 #include <unistd.h>
 
 __warn_references(tmpnam,
-    "warning: tmpnam() possibly used unsafely; consider using mkstemp()");
+    "tmpnam() possibly used unsafely; consider using mkstemp()");
 
 char *
 tmpnam(char *s)
diff --git a/libc/upstream-openbsd/lib/libc/stdio/vswprintf.c b/libc/upstream-openbsd/lib/libc/stdio/vswprintf.c
index 641db4a..91e71cb 100644
--- a/libc/upstream-openbsd/lib/libc/stdio/vswprintf.c
+++ b/libc/upstream-openbsd/lib/libc/stdio/vswprintf.c
@@ -1,8 +1,8 @@
-/*	$OpenBSD: vswprintf.c,v 1.6 2015/08/31 02:53:57 guenther Exp $	*/
+/*	$OpenBSD: vswprintf.c,v 1.7 2019/01/25 00:19:25 millert Exp $	*/
 /*	$NetBSD: vswprintf.c,v 1.1 2005/05/14 23:51:02 christos Exp $	*/
 
 /*
- * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 1997 Todd C. Miller <millert@openbsd.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/libc/upstream-openbsd/lib/libc/stdlib/getenv.c b/libc/upstream-openbsd/lib/libc/stdlib/getenv.c
index fd8482e..054497b 100644
--- a/libc/upstream-openbsd/lib/libc/stdlib/getenv.c
+++ b/libc/upstream-openbsd/lib/libc/stdlib/getenv.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getenv.c,v 1.10 2010/08/23 22:31:50 millert Exp $ */
+/*	$OpenBSD: getenv.c,v 1.12 2016/03/13 18:34:21 guenther Exp $ */
 /*
  * Copyright (c) 1987, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -31,7 +31,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-char *__findenv(const char *name, int len, int *offset);
 
 /*
  * __findenv --
@@ -46,7 +45,6 @@
 char *
 __findenv(const char *name, int len, int *offset)
 {
-	extern char **environ;
 	int i;
 	const char *np;
 	char **p, *cp;
@@ -79,3 +77,4 @@
 		;
 	return (__findenv(name, (int)(np - name), &offset));
 }
+DEF_STRONG(getenv);
diff --git a/libc/upstream-openbsd/lib/libc/stdlib/llabs.c b/libc/upstream-openbsd/lib/libc/stdlib/llabs.c
index fc2cd82..f4a260f 100644
--- a/libc/upstream-openbsd/lib/libc/stdlib/llabs.c
+++ b/libc/upstream-openbsd/lib/libc/stdlib/llabs.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: llabs.c,v 1.3 2007/01/08 19:39:25 deraadt Exp $	*/
+/*	$OpenBSD: llabs.c,v 1.4 2016/08/14 23:18:03 guenther Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -36,3 +36,5 @@
 {
 	return (j < 0 ? -j : j);
 }
+
+__weak_alias(qabs, llabs);
diff --git a/libc/upstream-openbsd/lib/libc/string/memrchr.c b/libc/upstream-openbsd/lib/libc/string/memrchr.c
index 26a3399..e123bc1 100644
--- a/libc/upstream-openbsd/lib/libc/string/memrchr.c
+++ b/libc/upstream-openbsd/lib/libc/string/memrchr.c
@@ -1,7 +1,7 @@
-/*	$OpenBSD: memrchr.c,v 1.3 2015/08/31 02:53:57 guenther Exp $	*/
+/*	$OpenBSD: memrchr.c,v 1.4 2019/01/25 00:19:25 millert Exp $	*/
 
 /*
- * Copyright (c) 2007 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 2007 Todd C. Miller <millert@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
diff --git a/libc/upstream-openbsd/lib/libc/string/stpcpy.c b/libc/upstream-openbsd/lib/libc/string/stpcpy.c
index d88afac..5a86541 100644
--- a/libc/upstream-openbsd/lib/libc/string/stpcpy.c
+++ b/libc/upstream-openbsd/lib/libc/string/stpcpy.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: stpcpy.c,v 1.2 2014/07/09 17:08:21 naddy Exp $	*/
+/*	$OpenBSD: stpcpy.c,v 1.3 2017/11/28 06:55:49 tb Exp $	*/
 
 /*
  * Copyright (c) 1988 Regents of the University of California.
@@ -33,7 +33,7 @@
 
 #if defined(APIWARN)
 __warn_references(stpcpy,
-    "warning: stpcpy() is dangerous; do not use it");
+    "stpcpy() is dangerous; do not use it");
 #endif
 
 char *
diff --git a/libc/upstream-openbsd/lib/libc/string/strcat.c b/libc/upstream-openbsd/lib/libc/string/strcat.c
index 646c9c2..73da22f 100644
--- a/libc/upstream-openbsd/lib/libc/string/strcat.c
+++ b/libc/upstream-openbsd/lib/libc/string/strcat.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: strcat.c,v 1.9 2014/06/10 04:17:37 deraadt Exp $	*/
+/*	$OpenBSD: strcat.c,v 1.10 2017/11/28 06:55:49 tb Exp $	*/
 
 /*
  * Copyright (c) 1988 Regents of the University of California.
@@ -33,7 +33,7 @@
 
 #if defined(APIWARN)
 __warn_references(strcat,
-    "warning: strcat() is almost always misused, please use strlcat()");
+    "strcat() is almost always misused, please use strlcat()");
 #endif
 
 char *
diff --git a/libc/upstream-openbsd/lib/libc/string/strcpy.c b/libc/upstream-openbsd/lib/libc/string/strcpy.c
index 5a9001e..290eefe 100644
--- a/libc/upstream-openbsd/lib/libc/string/strcpy.c
+++ b/libc/upstream-openbsd/lib/libc/string/strcpy.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: strcpy.c,v 1.9 2014/06/10 04:17:37 deraadt Exp $	*/
+/*	$OpenBSD: strcpy.c,v 1.10 2017/11/28 06:55:49 tb Exp $	*/
 
 /*
  * Copyright (c) 1988 Regents of the University of California.
@@ -33,7 +33,7 @@
 
 #if defined(APIWARN)
 __warn_references(strcpy,
-    "warning: strcpy() is almost always misused, please use strlcpy()");
+    "strcpy() is almost always misused, please use strlcpy()");
 #endif
 
 char *
diff --git a/libc/upstream-openbsd/lib/libc/string/strlcat.c b/libc/upstream-openbsd/lib/libc/string/strlcat.c
index 6bf2a41..aa3db7ab 100644
--- a/libc/upstream-openbsd/lib/libc/string/strlcat.c
+++ b/libc/upstream-openbsd/lib/libc/string/strlcat.c
@@ -1,7 +1,7 @@
-/*	$OpenBSD: strlcat.c,v 1.18 2016/10/16 17:37:39 dtucker Exp $	*/
+/*	$OpenBSD: strlcat.c,v 1.19 2019/01/25 00:19:25 millert Exp $	*/
 
 /*
- * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
diff --git a/libc/upstream-openbsd/lib/libc/string/strlcpy.c b/libc/upstream-openbsd/lib/libc/string/strlcpy.c
index 3677689..7e3b9ae 100644
--- a/libc/upstream-openbsd/lib/libc/string/strlcpy.c
+++ b/libc/upstream-openbsd/lib/libc/string/strlcpy.c
@@ -1,7 +1,7 @@
-/*	$OpenBSD: strlcpy.c,v 1.15 2016/10/16 17:37:39 dtucker Exp $	*/
+/*	$OpenBSD: strlcpy.c,v 1.16 2019/01/25 00:19:25 millert Exp $	*/
 
 /*
- * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
diff --git a/libc/upstream-openbsd/lib/libc/string/strndup.c b/libc/upstream-openbsd/lib/libc/string/strndup.c
index a6e5bff..499f9a0 100644
--- a/libc/upstream-openbsd/lib/libc/string/strndup.c
+++ b/libc/upstream-openbsd/lib/libc/string/strndup.c
@@ -1,7 +1,7 @@
-/*	$OpenBSD: strndup.c,v 1.2 2015/08/31 02:53:57 guenther Exp $	*/
+/*	$OpenBSD: strndup.c,v 1.3 2019/01/25 00:19:25 millert Exp $	*/
 
 /*
- * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 2010 Todd C. Miller <millert@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
diff --git a/libc/upstream-openbsd/lib/libc/string/wcslcpy.c b/libc/upstream-openbsd/lib/libc/string/wcslcpy.c
index 36a544a..9c433c8 100644
--- a/libc/upstream-openbsd/lib/libc/string/wcslcpy.c
+++ b/libc/upstream-openbsd/lib/libc/string/wcslcpy.c
@@ -1,7 +1,7 @@
-/*	$OpenBSD: wcslcpy.c,v 1.7 2015/09/12 16:23:14 guenther Exp $	*/
+/*	$OpenBSD: wcslcpy.c,v 1.8 2019/01/25 00:19:25 millert Exp $	*/
 
 /*
- * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
diff --git a/libc/upstream-openbsd/lib/libc/time/wcsftime.c b/libc/upstream-openbsd/lib/libc/time/wcsftime.c
index 0678404..6870871 100644
--- a/libc/upstream-openbsd/lib/libc/time/wcsftime.c
+++ b/libc/upstream-openbsd/lib/libc/time/wcsftime.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: wcsftime.c,v 1.6 2015/02/09 14:52:28 tedu Exp $ */
+/*	$OpenBSD: wcsftime.c,v 1.7 2019/05/12 12:49:52 schwarze Exp $ */
 /*
 ** Based on the UCB version with the ID appearing below.
 ** This is ANSIish only when "multibyte character == plain character".
@@ -439,7 +439,7 @@
 			continue;
 		case 'Z':
 			if (t->tm_zone != NULL)
-				pt = _sadd(t->TM_ZONE, pt, ptlim);
+				pt = _sadd(t->tm_zone, pt, ptlim);
 			else
 				if (t->tm_isdst >= 0)
 					pt = _sadd(tzname[t->tm_isdst != 0],