25 files changed, 493 insertions, 315 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5523a5f..ac8ba7f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 2.8)
 project(oniguruma C)
 
 set(PACKAGE onig)
-set(PACKAGE_VERSION "6.1.1")
+set(PACKAGE_VERSION "6.1.2")
 
 set(USE_COMBINATION_EXPLOSION_CHECK 0)
 set(USE_CRNL_AS_LINE_TERMINATOR 0)
diff --git a/HISTORY b/HISTORY
index 9894c7d..c59fe4b 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,5 +1,13 @@
 History
 
+2016/11/07: Version 6.1.2
+
+2016/10/25: allow word bound, word begin and word end in look-behind.
+2016/10/19: add ONIG_OPTION_CHECK_VALIDITY_OF_STRING option.
+2016/10/16: fix use after free node.
+2016/10/10: fix memory leaks after parsing regexp error.
+2016/09/22: implement many of is_valid_mbc_string().
+
 2016/09/02: Version 6.1.1
 
 2016/08/31: fix segfault /W.?{888}{888}{888}\x00/ (found by libfuzzer)
@@ -338,7 +346,7 @@ History
 2006/10/10: [impl] remove OP_WORD_SB and OP_WORD_MB.
 2006/10/10: [impl] remove OP_EXACT1_IC and OP_EXACTN_IC from match_at().
 2006/10/10: [impl] should free new_str in expand_case_fold_string().
-2006/10/06: [dist] add test entrys to sample/encode.c.
+2006/10/06: [dist] add test entries to sample/encode.c.
 2006/10/06: [impl] re-implement caseless match (case-fold).
 2006/10/06: [impl] expand string node by case fold variations.
                    add expand_case_fold_string().
@@ -907,7 +915,7 @@ History
 2004/11/16: [impl] add get_type_cc_node method to OnigEncodingType.
 2004/11/15: [impl] add st.h and st.c from Ruby 1.9.
                    use st-hash always.
-2004/11/12: [impl] change menber 'not' of CClassNode to 'flags'.
+2004/11/12: [impl] change member 'not' of CClassNode to 'flags'.
                    add flags FLAG_CCLASS_NOT and FLAG_CCLASS_SHARE.
 2004/11/12: [impl] add onig_is_in_code_range_array() to enc/unicode.c.
 2004/11/12: [impl] fix CRWord in enc/unicode.c and MBWord in enc/utf8.c.
@@ -952,7 +960,7 @@ History
 2004/10/18: [impl] (thanks Imai Yasumasa)
                    enclose #include <sys/types.h> by #ifndef __BORLANDC__.
 2004/10/18: [bug]  (thanks Imai Yasumasa)
-                   memory acess violation in select_opt_exact_info().
+                   memory access violation in select_opt_exact_info().
 2004/09/25: [dist] fix doc/API and doc/API.ja.
 2004/09/25: [bug]  fix OP_SEMI_END_BUF process in match_at() for
                    the case USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
@@ -1163,7 +1171,7 @@ History
 2004/04/15: [new]  add onig_get_ambig_flag().
 2004/04/14: [bug]  (thanks Isao Sonobe)
                    undefined bytecode error happens if ONIG_OPTION_FIND_LONGEST
-                   is setted.
+                   is set.
                    should finish matching process if find-condition
                    is fail at OP_END in match_at().
 2004/04/12: [impl] add ambig_flag to regex_t.
@@ -1721,7 +1729,7 @@ History
 2003/03/12: [spec] change named backref and subexp call format.
                    backref: \k<name>, call: \g<name>     (thanks akr)
 2003/03/11: [inst] add regparse.[ch] in win32/Makefile.
-2003/03/11: [bug]  if UNALIGNED_WORD_ACCESS isn't setted
+2003/03/11: [bug]  if UNALIGNED_WORD_ACCESS isn't set,
                    then compile error in unset_addr_list_fix().  (thanks knu)
 2003/03/10: [impl] divide regcomp.c to regcomp.c, regparse.c and regparse.h.
 2003/03/10: [bug]  should handle multi-byte code name in fetch_name().
@@ -1788,7 +1796,7 @@ History
 2003/02/28: [impl] add opcode OP_CALL, OP_RETURN.
                    add stack type STK_CALL_FRAME, STK_RETURN, STK_MEM_END.
 2003/02/26: [spec] add new syntax behavior REG_SYN_STRICT_CHECK_BACKREF_NUMBER.
-                   if it is setted, then error /(\1)/, /\1(..)/ etc...
+                   if it is set, then error /(\1)/, /\1(..)/ etc...
 2003/02/26: [spec] if backref number is greater than max group number,
                    then return compile error. (REGERR_INVALID_BACKREF_NUMBER)
 2003/02/26: [tune] bad implemented N_ALT case in get_min_match_length().
diff --git a/README.md b/README.md
index a2c49cd..bfb41c7 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,12 @@ Supported character encodings:
 * CP1251:  contributed by Byte
 
 
+New feature of version 6.1.2
+--------------------------
+
+* allow word bound, word begin and word end in look-behind.
+* NEW option: ONIG_OPTION_CHECK_VALIDITY_OF_STRING
+
 New feature of version 6.1
 --------------------------
 
diff --git a/config.guess b/config.guess
index b79252d..bf5ad89 100755
--- a/config.guess
+++ b/config.guess
@@ -1,8 +1,8 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
-#   Copyright 1992-2013 Free Software Foundation, Inc.
+#   Copyright 1992-2016 Free Software Foundation, Inc.
 
-timestamp='2013-06-10'
+timestamp='2016-09-11'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -24,12 +24,12 @@ timestamp='2013-06-10'
 # program.  This Exception is an additional permission under section 7
 # of the GNU General Public License, version 3 ("GPLv3").
 #
-# Originally written by Per Bothner.
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
 #
 # You can get the latest version of this script from:
-# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess
 #
-# Please send patches with a ChangeLog entry to config-patches@gnu.org.
+# Please send patches to <config-patches@gnu.org>.
 
 
 me=`echo "$0" | sed -e 's,.*/,,'`
@@ -50,7 +50,7 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright 1992-2013 Free Software Foundation, Inc.
+Copyright 1992-2016 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -149,7 +149,7 @@ Linux|GNU|GNU/*)
 	LIBC=gnu
 	#endif
 	EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
 	;;
 esac
 
@@ -168,19 +168,29 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	# Note: NetBSD doesn't particularly care about the vendor
 	# portion of the name.  We always set it to "unknown".
 	sysctl="sysctl -n hw.machine_arch"
-	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
-	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+	UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
+	    /sbin/$sysctl 2>/dev/null || \
+	    /usr/sbin/$sysctl 2>/dev/null || \
+	    echo unknown)`
 	case "${UNAME_MACHINE_ARCH}" in
 	    armeb) machine=armeb-unknown ;;
 	    arm*) machine=arm-unknown ;;
 	    sh3el) machine=shl-unknown ;;
 	    sh3eb) machine=sh-unknown ;;
 	    sh5el) machine=sh5le-unknown ;;
+	    earmv*)
+		arch=`echo ${UNAME_MACHINE_ARCH} | sed -e 's,^e\(armv[0-9]\).*$,\1,'`
+		endian=`echo ${UNAME_MACHINE_ARCH} | sed -ne 's,^.*\(eb\)$,\1,p'`
+		machine=${arch}${endian}-unknown
+		;;
 	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
 	esac
 	# The Operating System including object format, if it has switched
-	# to ELF recently, or will in the future.
+	# to ELF recently (or will in the future) and ABI.
 	case "${UNAME_MACHINE_ARCH}" in
+	    earm*)
+		os=netbsdelf
+		;;
 	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
 		eval $set_cc_for_build
 		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
@@ -197,6 +207,13 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 		os=netbsd
 		;;
 	esac
+	# Determine ABI tags.
+	case "${UNAME_MACHINE_ARCH}" in
+	    earm*)
+		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
+		abi=`echo ${UNAME_MACHINE_ARCH} | sed -e "$expr"`
+		;;
+	esac
 	# The OS release
 	# Debian GNU/NetBSD machines have a different userland, and
 	# thus, need a distinct triplet. However, they do not need
@@ -207,13 +224,13 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 		release='-gnu'
 		;;
 	    *)
-		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+		release=`echo ${UNAME_RELEASE} | sed -e 's/[-_].*//' | cut -d. -f1,2`
 		;;
 	esac
 	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
 	# contains redundant information, the shorter form:
 	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
-	echo "${machine}-${os}${release}"
+	echo "${machine}-${os}${release}${abi}"
 	exit ;;
     *:Bitrig:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
@@ -223,6 +240,10 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
 	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
 	exit ;;
+    *:LibertyBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-libertybsd${UNAME_RELEASE}
+	exit ;;
     *:ekkoBSD:*:*)
 	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
 	exit ;;
@@ -235,6 +256,9 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     *:MirBSD:*:*)
 	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
 	exit ;;
+    *:Sortix:*:*)
+	echo ${UNAME_MACHINE}-unknown-sortix
+	exit ;;
     alpha:OSF1:*:*)
 	case $UNAME_RELEASE in
 	*4.0)
@@ -251,42 +275,42 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
 	case "$ALPHA_CPU_TYPE" in
 	    "EV4 (21064)")
-		UNAME_MACHINE="alpha" ;;
+		UNAME_MACHINE=alpha ;;
 	    "EV4.5 (21064)")
-		UNAME_MACHINE="alpha" ;;
+		UNAME_MACHINE=alpha ;;
 	    "LCA4 (21066/21068)")
-		UNAME_MACHINE="alpha" ;;
+		UNAME_MACHINE=alpha ;;
 	    "EV5 (21164)")
-		UNAME_MACHINE="alphaev5" ;;
+		UNAME_MACHINE=alphaev5 ;;
 	    "EV5.6 (21164A)")
-		UNAME_MACHINE="alphaev56" ;;
+		UNAME_MACHINE=alphaev56 ;;
 	    "EV5.6 (21164PC)")
-		UNAME_MACHINE="alphapca56" ;;
+		UNAME_MACHINE=alphapca56 ;;
 	    "EV5.7 (21164PC)")
-		UNAME_MACHINE="alphapca57" ;;
+		UNAME_MACHINE=alphapca57 ;;
 	    "EV6 (21264)")
-		UNAME_MACHINE="alphaev6" ;;
+		UNAME_MACHINE=alphaev6 ;;
 	    "EV6.7 (21264A)")
-		UNAME_MACHINE="alphaev67" ;;
+		UNAME_MACHINE=alphaev67 ;;
 	    "EV6.8CB (21264C)")
-		UNAME_MACHINE="alphaev68" ;;
+		UNAME_MACHINE=alphaev68 ;;
 	    "EV6.8AL (21264B)")
-		UNAME_MACHINE="alphaev68" ;;
+		UNAME_MACHINE=alphaev68 ;;
 	    "EV6.8CX (21264D)")
-		UNAME_MACHINE="alphaev68" ;;
+		UNAME_MACHINE=alphaev68 ;;
 	    "EV6.9A (21264/EV69A)")
-		UNAME_MACHINE="alphaev69" ;;
+		UNAME_MACHINE=alphaev69 ;;
 	    "EV7 (21364)")
-		UNAME_MACHINE="alphaev7" ;;
+		UNAME_MACHINE=alphaev7 ;;
 	    "EV7.9 (21364A)")
-		UNAME_MACHINE="alphaev79" ;;
+		UNAME_MACHINE=alphaev79 ;;
 	esac
 	# A Pn.n version is a patched version.
 	# A Vn.n version is a released version.
 	# A Tn.n version is a released field test version.
 	# A Xn.n version is an unreleased experimental baselevel.
 	# 1.2 uses "1.2" for uname -r.
-	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
 	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
 	exitcode=$?
 	trap '' 0
@@ -359,16 +383,16 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	exit ;;
     i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
 	eval $set_cc_for_build
-	SUN_ARCH="i386"
+	SUN_ARCH=i386
 	# If there is a compiler, see if it is configured for 64-bit objects.
 	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
 	# This test works for both compilers.
-	if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
+	if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
 	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
-		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
 		grep IS_64BIT_ARCH >/dev/null
 	    then
-		SUN_ARCH="x86_64"
+		SUN_ARCH=x86_64
 	    fi
 	fi
 	echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
@@ -393,7 +417,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	exit ;;
     sun*:*:4.2BSD:*)
 	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
-	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+	test "x${UNAME_RELEASE}" = x && UNAME_RELEASE=3
 	case "`/bin/arch`" in
 	    sun3)
 		echo m68k-sun-sunos${UNAME_RELEASE}
@@ -579,8 +603,9 @@ EOF
 	else
 		IBM_ARCH=powerpc
 	fi
-	if [ -x /usr/bin/oslevel ] ; then
-		IBM_REV=`/usr/bin/oslevel`
+	if [ -x /usr/bin/lslpp ] ; then
+		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc |
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
 	else
 		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
 	fi
@@ -617,13 +642,13 @@ EOF
 		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
 		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
 		    case "${sc_cpu_version}" in
-		      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
-		      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
 		      532)                      # CPU_PA_RISC2_0
 			case "${sc_kernel_bits}" in
-			  32) HP_ARCH="hppa2.0n" ;;
-			  64) HP_ARCH="hppa2.0w" ;;
-			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
+			  32) HP_ARCH=hppa2.0n ;;
+			  64) HP_ARCH=hppa2.0w ;;
+			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
 			esac ;;
 		    esac
 		fi
@@ -662,11 +687,11 @@ EOF
 		    exit (0);
 		}
 EOF
-		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+		    (CCOPTS="" $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
 		    test -z "$HP_ARCH" && HP_ARCH=hppa
 		fi ;;
 	esac
-	if [ ${HP_ARCH} = "hppa2.0w" ]
+	if [ ${HP_ARCH} = hppa2.0w ]
 	then
 	    eval $set_cc_for_build
 
@@ -679,12 +704,12 @@ EOF
 	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
 	    # => hppa64-hp-hpux11.23
 
-	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
+	    if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) |
 		grep -q __LP64__
 	    then
-		HP_ARCH="hppa2.0w"
+		HP_ARCH=hppa2.0w
 	    else
-		HP_ARCH="hppa64"
+		HP_ARCH=hppa64
 	    fi
 	fi
 	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
@@ -789,14 +814,14 @@ EOF
 	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
 	exit ;;
     F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
-	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-	FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+	FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
 	FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
 	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
 	exit ;;
     5000:UNIX_System_V:4.*:*)
-	FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-	FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
 	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
 	exit ;;
     i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
@@ -826,7 +851,7 @@ EOF
     *:MINGW*:*)
 	echo ${UNAME_MACHINE}-pc-mingw32
 	exit ;;
-    i*:MSYS*:*)
+    *:MSYS*:*)
 	echo ${UNAME_MACHINE}-pc-msys
 	exit ;;
     i*:windows32*:*)
@@ -878,7 +903,7 @@ EOF
 	exit ;;
     *:GNU/*:*:*)
 	# other systems with GNU libc and userland
-	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC}
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC}
 	exit ;;
     i*86:Minix:*:*)
 	echo ${UNAME_MACHINE}-pc-minix
@@ -901,7 +926,7 @@ EOF
 	  EV68*) UNAME_MACHINE=alphaev68 ;;
 	esac
 	objdump --private-headers /bin/sh | grep -q ld.so.1
-	if test "$?" = 0 ; then LIBC="gnulibc1" ; fi
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     arc:Linux:*:* | arceb:Linux:*:*)
@@ -932,6 +957,9 @@ EOF
     crisv32:Linux:*:*)
 	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
 	exit ;;
+    e2k:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
     frv:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
@@ -944,6 +972,9 @@ EOF
     ia64:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
+    k1om:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
     m32r*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
@@ -969,10 +1000,10 @@ EOF
 	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
 	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
 	;;
-    or1k:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+    openrisc*:Linux:*:*)
+	echo or1k-unknown-linux-${LIBC}
 	exit ;;
-    or32:Linux:*:*)
+    or32:Linux:*:* | or1k*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     padre:Linux:*:*)
@@ -1001,6 +1032,9 @@ EOF
     ppcle:Linux:*:*)
 	echo powerpcle-unknown-linux-${LIBC}
 	exit ;;
+    riscv32:Linux:*:* | riscv64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
     s390:Linux:*:* | s390x:Linux:*:*)
 	echo ${UNAME_MACHINE}-ibm-linux-${LIBC}
 	exit ;;
@@ -1020,7 +1054,7 @@ EOF
 	echo ${UNAME_MACHINE}-dec-linux-${LIBC}
 	exit ;;
     x86_64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	echo ${UNAME_MACHINE}-pc-linux-${LIBC}
 	exit ;;
     xtensa*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
@@ -1099,7 +1133,7 @@ EOF
 	# uname -m prints for DJGPP always 'pc', but it prints nothing about
 	# the processor, so we play safe by assuming i586.
 	# Note: whatever this is, it MUST be the same as what config.sub
-	# prints for the "djgpp" host, or else GDB configury will decide that
+	# prints for the "djgpp" host, or else GDB configure will decide that
 	# this is a cross-build.
 	echo i586-pc-msdosdjgpp
 	exit ;;
@@ -1248,6 +1282,9 @@ EOF
     SX-8R:SUPER-UX:*:*)
 	echo sx8r-nec-superux${UNAME_RELEASE}
 	exit ;;
+    SX-ACE:SUPER-UX:*:*)
+	echo sxace-nec-superux${UNAME_RELEASE}
+	exit ;;
     Power*:Rhapsody:*:*)
 	echo powerpc-apple-rhapsody${UNAME_RELEASE}
 	exit ;;
@@ -1260,22 +1297,32 @@ EOF
 	if test "$UNAME_PROCESSOR" = unknown ; then
 	    UNAME_PROCESSOR=powerpc
 	fi
-	if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
-	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
-		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
-		grep IS_64BIT_ARCH >/dev/null
-	    then
-		case $UNAME_PROCESSOR in
-		    i386) UNAME_PROCESSOR=x86_64 ;;
-		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
-		esac
+	if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then
+	    if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
+		if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		    (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		    grep IS_64BIT_ARCH >/dev/null
+		then
+		    case $UNAME_PROCESSOR in
+			i386) UNAME_PROCESSOR=x86_64 ;;
+			powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		    esac
+		fi
 	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # Avoid executing cc on OS X 10.9, as it ships with a stub
+	    # that puts up a graphical alert prompting to install
+	    # developer tools.  Any system running Mac OS X 10.7 or
+	    # later (Darwin 11 and later) is required to have a 64-bit
+	    # processor. This is not true of the ARM version of Darwin
+	    # that Apple uses in portable devices.
+	    UNAME_PROCESSOR=x86_64
 	fi
 	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
 	exit ;;
     *:procnto*:*:* | *:QNX:[0123456789]*:*)
 	UNAME_PROCESSOR=`uname -p`
-	if test "$UNAME_PROCESSOR" = "x86"; then
+	if test "$UNAME_PROCESSOR" = x86; then
 		UNAME_PROCESSOR=i386
 		UNAME_MACHINE=pc
 	fi
@@ -1306,7 +1353,7 @@ EOF
 	# "uname -m" is not consistent, so use $cputype instead. 386
 	# is converted to i386 for consistency with other x86
 	# operating systems.
-	if test "$cputype" = "386"; then
+	if test "$cputype" = 386; then
 	    UNAME_MACHINE=i386
 	else
 	    UNAME_MACHINE="$cputype"
@@ -1348,7 +1395,7 @@ EOF
 	echo i386-pc-xenix
 	exit ;;
     i*86:skyos:*:*)
-	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
+	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE} | sed -e 's/ .*$//'`
 	exit ;;
     i*86:rdos:*:*)
 	echo ${UNAME_MACHINE}-pc-rdos
@@ -1359,171 +1406,25 @@ EOF
     x86_64:VMkernel:*:*)
 	echo ${UNAME_MACHINE}-unknown-esx
 	exit ;;
-esac
-
-eval $set_cc_for_build
-cat >$dummy.c <<EOF
-#ifdef _SEQUENT_
-# include <sys/types.h>
-# include <sys/utsname.h>
-#endif
-main ()
-{
-#if defined (sony)
-#if defined (MIPSEB)
-  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
-     I don't know....  */
-  printf ("mips-sony-bsd\n"); exit (0);
-#else
-#include <sys/param.h>
-  printf ("m68k-sony-newsos%s\n",
-#ifdef NEWSOS4
-	"4"
-#else
-	""
-#endif
-	); exit (0);
-#endif
-#endif
-
-#if defined (__arm) && defined (__acorn) && defined (__unix)
-  printf ("arm-acorn-riscix\n"); exit (0);
-#endif
-
-#if defined (hp300) && !defined (hpux)
-  printf ("m68k-hp-bsd\n"); exit (0);
-#endif
-
-#if defined (NeXT)
-#if !defined (__ARCHITECTURE__)
-#define __ARCHITECTURE__ "m68k"
-#endif
-  int version;
-  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
-  if (version < 4)
-    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
-  else
-    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
-  exit (0);
-#endif
-
-#if defined (MULTIMAX) || defined (n16)
-#if defined (UMAXV)
-  printf ("ns32k-encore-sysv\n"); exit (0);
-#else
-#if defined (CMU)
-  printf ("ns32k-encore-mach\n"); exit (0);
-#else
-  printf ("ns32k-encore-bsd\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (__386BSD__)
-  printf ("i386-pc-bsd\n"); exit (0);
-#endif
-
-#if defined (sequent)
-#if defined (i386)
-  printf ("i386-sequent-dynix\n"); exit (0);
-#endif
-#if defined (ns32000)
-  printf ("ns32k-sequent-dynix\n"); exit (0);
-#endif
-#endif
-
-#if defined (_SEQUENT_)
-    struct utsname un;
-
-    uname(&un);
-
-    if (strncmp(un.version, "V2", 2) == 0) {
-	printf ("i386-sequent-ptx2\n"); exit (0);
-    }
-    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
-	printf ("i386-sequent-ptx1\n"); exit (0);
-    }
-    printf ("i386-sequent-ptx\n"); exit (0);
-
-#endif
-
-#if defined (vax)
-# if !defined (ultrix)
-#  include <sys/param.h>
-#  if defined (BSD)
-#   if BSD == 43
-      printf ("vax-dec-bsd4.3\n"); exit (0);
-#   else
-#    if BSD == 199006
-      printf ("vax-dec-bsd4.3reno\n"); exit (0);
-#    else
-      printf ("vax-dec-bsd\n"); exit (0);
-#    endif
-#   endif
-#  else
-    printf ("vax-dec-bsd\n"); exit (0);
-#  endif
-# else
-    printf ("vax-dec-ultrix\n"); exit (0);
-# endif
-#endif
-
-#if defined (alliant) && defined (i860)
-  printf ("i860-alliant-bsd\n"); exit (0);
-#endif
-
-  exit (1);
-}
-EOF
-
-$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
-	{ echo "$SYSTEM_NAME"; exit; }
-
-# Apollos put the system type in the environment.
-
-test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
-
-# Convex versions that predate uname can use getsysinfo(1)
-
-if [ -x /usr/convex/getsysinfo ]
-then
-    case `getsysinfo -f cpu_type` in
-    c1*)
-	echo c1-convex-bsd
-	exit ;;
-    c2*)
-	if getsysinfo -f scalar_acc
-	then echo c32-convex-bsd
-	else echo c2-convex-bsd
-	fi
-	exit ;;
-    c34*)
-	echo c34-convex-bsd
-	exit ;;
-    c38*)
-	echo c38-convex-bsd
-	exit ;;
-    c4*)
-	echo c4-convex-bsd
+    amd64:Isilon\ OneFS:*:*)
+	echo x86_64-unknown-onefs
 	exit ;;
-    esac
-fi
+esac
 
 cat >&2 <<EOF
 $0: unable to guess system type
 
-This script, last modified $timestamp, has failed to recognize
-the operating system you are using. It is advised that you
-download the most up to date version of the config scripts from
+This script (version $timestamp), has failed to recognize the
+operating system you are using. If your script is old, overwrite
+config.guess and config.sub with the latest versions from:
 
-  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess
 and
-  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
 
-If the version you run ($0) is already up to date, please
-send the following data and any information you think might be
-pertinent to <config-patches@gnu.org> in order to provide the needed
-information to handle your system.
+If $0 has already been updated, send the following data and any
+information you think might be pertinent to config-patches@gnu.org to
+provide the necessary information to handle your system.
 
 config.guess timestamp = $timestamp
 
diff --git a/config.sub b/config.sub
index 9633db7..cc69b06 100755
--- a/config.sub
+++ b/config.sub
@@ -1,8 +1,8 @@
 #! /bin/sh
 # Configuration validation subroutine script.
-#   Copyright 1992-2013 Free Software Foundation, Inc.
+#   Copyright 1992-2016 Free Software Foundation, Inc.
 
-timestamp='2013-08-10'
+timestamp='2016-09-05'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -25,7 +25,7 @@ timestamp='2013-08-10'
 # of the GNU General Public License, version 3 ("GPLv3").
 
 
-# Please send patches with a ChangeLog entry to config-patches@gnu.org.
+# Please send patches to <config-patches@gnu.org>.
 #
 # Configuration subroutine to validate and canonicalize a configuration type.
 # Supply the specified configuration type as an argument.
@@ -33,7 +33,7 @@ timestamp='2013-08-10'
 # Otherwise, we print the canonical config type on stdout and succeed.
 
 # You can get the latest version of this script from:
-# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
 
 # This file is supposed to be the same for all GNU packages
 # and recognize all the CPU types, system types and aliases
@@ -53,8 +53,7 @@ timestamp='2013-08-10'
 me=`echo "$0" | sed -e 's,.*/,,'`
 
 usage="\
-Usage: $0 [OPTION] CPU-MFR-OPSYS
-       $0 [OPTION] ALIAS
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
 
 Canonicalize a configuration name.
 
@@ -68,7 +67,7 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright 1992-2013 Free Software Foundation, Inc.
+Copyright 1992-2016 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -117,8 +116,8 @@ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
   nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
   linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
-  knetbsd*-gnu* | netbsd*-gnu* | \
-  kopensolaris*-gnu* | \
+  knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \
+  kopensolaris*-gnu* | cloudabi*-eabi* | \
   storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
@@ -255,16 +254,18 @@ case $basic_machine in
 	| arc | arceb \
 	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
 	| avr | avr32 \
+	| ba \
 	| be32 | be64 \
 	| bfin \
 	| c4x | c8051 | clipper \
 	| d10v | d30v | dlx | dsp16xx \
-	| epiphany \
-	| fido | fr30 | frv \
+	| e2k | epiphany \
+	| fido | fr30 | frv | ft32 \
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
 	| hexagon \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
+	| k1om \
 	| le32 | le64 \
 	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
@@ -282,8 +283,10 @@ case $basic_machine in
 	| mips64vr5900 | mips64vr5900el \
 	| mipsisa32 | mipsisa32el \
 	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa32r6 | mipsisa32r6el \
 	| mipsisa64 | mipsisa64el \
 	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64r6 | mipsisa64r6el \
 	| mipsisa64sb1 | mipsisa64sb1el \
 	| mipsisa64sr71k | mipsisa64sr71kel \
 	| mipsr5900 | mipsr5900el \
@@ -295,14 +298,14 @@ case $basic_machine in
 	| nds32 | nds32le | nds32be \
 	| nios | nios2 | nios2eb | nios2el \
 	| ns16k | ns32k \
-	| open8 \
-	| or1k | or32 \
+	| open8 | or1k | or1knd | or32 \
 	| pdp10 | pdp11 | pj | pjl \
 	| powerpc | powerpc64 | powerpc64le | powerpcle \
 	| pyramid \
+	| riscv32 | riscv64 \
 	| rl78 | rx \
 	| score \
-	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[234]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
 	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
 	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
@@ -310,6 +313,7 @@ case $basic_machine in
 	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
 	| ubicom32 \
 	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
+	| visium \
 	| we32k \
 	| x86 | xc16x | xstormy16 | xtensa \
 	| z8k | z80)
@@ -324,7 +328,10 @@ case $basic_machine in
 	c6x)
 		basic_machine=tic6x-unknown
 		;;
-	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | picochip)
+	leon|leon[3-9])
+		basic_machine=sparc-$basic_machine
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
 		basic_machine=$basic_machine-unknown
 		os=-none
 		;;
@@ -369,18 +376,20 @@ case $basic_machine in
 	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
+	| ba-* \
 	| be32-* | be64-* \
 	| bfin-* | bs2000-* \
 	| c[123]* | c30-* | [cjt]90-* | c4x-* \
 	| c8051-* | clipper-* | craynv-* | cydra-* \
 	| d10v-* | d30v-* | dlx-* \
-	| elxsi-* \
+	| e2k-* | elxsi-* \
 	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
 	| h8300-* | h8500-* \
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
 	| hexagon-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
+	| k1om-* \
 	| le32-* | le64-* \
 	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
@@ -400,8 +409,10 @@ case $basic_machine in
 	| mips64vr5900-* | mips64vr5900el-* \
 	| mipsisa32-* | mipsisa32el-* \
 	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa32r6-* | mipsisa32r6el-* \
 	| mipsisa64-* | mipsisa64el-* \
 	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64r6-* | mipsisa64r6el-* \
 	| mipsisa64sb1-* | mipsisa64sb1el-* \
 	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
 	| mipsr5900-* | mipsr5900el-* \
@@ -413,16 +424,18 @@ case $basic_machine in
 	| nios-* | nios2-* | nios2eb-* | nios2el-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
 	| open8-* \
+	| or1k*-* \
 	| orion-* \
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
 	| pyramid-* \
+	| riscv32-* | riscv64-* \
 	| rl78-* | romp-* | rs6000-* | rx-* \
 	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
 	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
 	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
 	| sparclite-* \
-	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx*-* \
 	| tahoe-* \
 	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
 	| tile*-* \
@@ -430,6 +443,7 @@ case $basic_machine in
 	| ubicom32-* \
 	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
 	| vax-* \
+	| visium-* \
 	| we32k-* \
 	| x86-* | x86_64-* | xc16x-* | xps100-* \
 	| xstormy16-* | xtensa*-* \
@@ -506,6 +520,9 @@ case $basic_machine in
 		basic_machine=i386-pc
 		os=-aros
 		;;
+	asmjs)
+		basic_machine=asmjs-unknown
+		;;
 	aux)
 		basic_machine=m68k-apple
 		os=-aux
@@ -626,6 +643,14 @@ case $basic_machine in
 		basic_machine=m68k-bull
 		os=-sysv3
 		;;
+	e500v[12])
+		basic_machine=powerpc-unknown
+		os=$os"spe"
+		;;
+	e500v[12]-*)
+		basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=$os"spe"
+		;;
 	ebmon29k)
 		basic_machine=a29k-amd
 		os=-ebmon
@@ -767,6 +792,9 @@ case $basic_machine in
 		basic_machine=m68k-isi
 		os=-sysv
 		;;
+	leon-*|leon[3-9]-*)
+		basic_machine=sparc-`echo $basic_machine | sed 's/-.*//'`
+		;;
 	m68knommu)
 		basic_machine=m68k-unknown
 		os=-linux
@@ -822,6 +850,10 @@ case $basic_machine in
 		basic_machine=powerpc-unknown
 		os=-morphos
 		;;
+	moxiebox)
+		basic_machine=moxie-unknown
+		os=-moxiebox
+		;;
 	msdos)
 		basic_machine=i386-pc
 		os=-msdos
@@ -998,7 +1030,7 @@ case $basic_machine in
 	ppc-* | ppcbe-*)
 		basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
-	ppcle | powerpclittle | ppc-le | powerpc-little)
+	ppcle | powerpclittle)
 		basic_machine=powerpcle-unknown
 		;;
 	ppcle-* | powerpclittle-*)
@@ -1008,7 +1040,7 @@ case $basic_machine in
 		;;
 	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
-	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+	ppc64le | powerpc64little)
 		basic_machine=powerpc64le-unknown
 		;;
 	ppc64le-* | powerpc64little-*)
@@ -1354,27 +1386,28 @@ case $os in
 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
 	      | -sym* | -kopensolaris* | -plan9* \
 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
-	      | -aos* | -aros* \
+	      | -aos* | -aros* | -cloudabi* | -sortix* \
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -bitrig* | -openbsd* | -solidbsd* \
+	      | -bitrig* | -openbsd* | -solidbsd* | -libertybsd* \
 	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
 	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
 	      | -chorusos* | -chorusrdb* | -cegcc* \
 	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
+	      | -midipix* | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
 	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
-	      | -uxpv* | -beos* | -mpeix* | -udk* \
+	      | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \
 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
 	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
 	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*)
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* \
+	      | -onefs* | -tirtos* | -phoenix*)
 	# Remember, each alternative MUST END IN *, to match a version number.
 		;;
 	-qnx*)
@@ -1506,6 +1539,8 @@ case $os in
 		;;
 	-nacl*)
 		;;
+	-ios)
+		;;
 	-none)
 		;;
 	*)
@@ -1592,9 +1627,6 @@ case $basic_machine in
 	mips*-*)
 		os=-elf
 		;;
-	or1k-*)
-		os=-elf
-		;;
 	or32-*)
 		os=-coff
 		;;
diff --git a/configure.ac b/configure.ac
index e7d8459..beeaf5a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT(onig, 6.1.1)
+AC_INIT(onig, 6.1.2)
 
 AC_CONFIG_MACRO_DIR([m4])
 
diff --git a/dist.info b/dist.info
index 6ecfe65..8e8d1aa 100644
--- a/dist.info
+++ b/dist.info
@@ -1,7 +1,7 @@
 --- This file is part of LuaDist project
 
 name = "onig"
-version = "6.1.1"
+version = "6.1.2"
 
 desc = "Oniguruma is a regular expressions library."
 author = "K.Kosako"
diff --git a/doc/API b/doc/API
index 8e824f5..c639432 100644
--- a/doc/API
+++ b/doc/API
@@ -432,9 +432,9 @@ Oniguruma API  Version 6.1.0  2016/08/22
   1 region:  match region data.
   2 at:      callback position.
 
-    ONIG_TRAVERSE_CALLBACK_AT_FIRST: callback first, then traverse childs.
-    ONIG_TRAVERSE_CALLBACK_AT_LAST:  traverse childs first, then callback.
-    ONIG_TRAVERSE_CALLBACK_AT_BOTH:  callback first, then traverse childs,
+    ONIG_TRAVERSE_CALLBACK_AT_FIRST: callback first, then traverse children.
+    ONIG_TRAVERSE_CALLBACK_AT_LAST:  traverse children first, then callback.
+    ONIG_TRAVERSE_CALLBACK_AT_BOTH:  callback first, then traverse children,
                                      and at last callback again.
 
   3 func:    callback function.
@@ -553,7 +553,7 @@ Oniguruma API  Version 6.1.0  2016/08/22
   2 op, op2, behavior, options: value of element.
 
 
-# void onig_copy_encoding(OnigEncoding to, OnigOnigEncoding from)
+# void onig_copy_encoding(OnigEncoding to, OnigEncoding from)
 
   Copy encoding.
 
diff --git a/doc/API.ja b/doc/API.ja
index f617a1c..2597510 100644
--- a/doc/API.ja
+++ b/doc/API.ja
@@ -559,7 +559,7 @@
   2 op, op2, behavior, options: Í×ÁǤÎÃÍ
 
 
-# void onig_copy_encoding(OnigEncoding to, OnigOnigEncoding from)
+# void onig_copy_encoding(OnigEncoding to, OnigEncoding from)
 
   ʸ»ú¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¤ò¥³¥Ô¡¼¤¹¤ë¡£
 
diff --git a/doc/RE.ja b/doc/RE.ja
index bc877f2..cf89c8f 100644
--- a/doc/RE.ja
+++ b/doc/RE.ja
@@ -383,7 +383,7 @@
       ÂàÈò½¤¾þ¤·¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤)
    + ̾Á°ÉÕ¤­Êá³Í¼°½¸¹ç¤È¡¢Éôʬ¼°¸Æ½Ð¤·µ¡Ç½ÄɲÃ
    + ¿¥Ð¥¤¥Èʸ»ú¥³¡¼¥É¤¬»ØÄꤵ¤ì¤Æ¤¤¤ë¤È¤­¡¢
-     ʸ»ú½¸¹ç¤ÎÃæ¤ÇȬ¿Ê¿ô¤Þ¤¿¤Ï½½Ï»¿Ê¿ôɽ¸½¤ÎϢ³¤Ï¡¢Â¿¥Ð¥¤¥ÈÉä¹ç¤Çɽ¸½¤µ¤ì¤¿
+     ʸ»ú½¸¹ç¤ÎÃæ¤ÇȬ¿Ê¿ô¤Þ¤¿¤Ï½½Ï»¿Ê¿ôɽ¸½¤ÎϢ³¤Ï¡¢Â¿¥Ð¥¤¥ÈÉä¹æ¤Çɽ¸½¤µ¤ì¤¿
      °ì¸Ä¤Îʸ»ú¤È²ò¼á¤µ¤ì¤ë
      (Îã. [\xa1\xa2], [\xa1\xa7-\xa4\xa1])
    + ʸ»ú½¸¹ç¤ÎÃæ¤Ç¡¢°ì¥Ð¥¤¥Èʸ»ú¤È¿¥Ð¥¤¥Èʸ»ú¤ÎÈÏ°Ï»ØÄê¤Ïµö¤µ¤ì¤ë¡£
diff --git a/index.html b/index.html
index 159d687..cf9177c 100644
--- a/index.html
+++ b/index.html
@@ -8,7 +8,7 @@
 <h1>Oniguruma</h1> (<a href="index_ja.html">Japanese</a>)
 
 <p>
-(c) K.Kosako, updated at: 2016/08/31
+(c) K.Kosako, updated at: 2016/11/07
 </p>
 
 <dl>
@@ -16,9 +16,9 @@
 <dt><b>What's new</b>
 </font>
 <ul>
+<li>2016/11/07: Version 6.1.2 released.</li>
 <li>2016/09/02: Version 6.1.1 released.</li>
 <li>2016/08/29: Version 6.1.0 released.</li>
-<li>2016/05/09: Version 6.0.0 released.</li>
 <li>2014/12/12: Version 5.9.6 released.</li>
 </ul>
 </dl>
diff --git a/index_ja.html b/index_ja.html
index 0918897..e11e0f5 100644
--- a/index_ja.html
+++ b/index_ja.html
@@ -8,7 +8,7 @@
 <h1>鬼車</h1>
 
 <p>
-(c) K.Kosako, 最終更新: 2016/08/31
+(c) K.Kosako, 最終更新: 2016/11/07
 </p>
 
 <dl>
@@ -16,9 +16,9 @@
 <dt><b>更新情報</b>
 </font>
 <ul>
+<li>2016/11/07: Version 6.1.2 リリース</li>
 <li>2016/09/02: Version 6.1.1 リリース</li>
 <li>2016/08/29: Version 6.1.0 リリース</li>
-<li>2016/05/09: Version 6.0.0 リリース</li>
 <li>2014/12/12: Version 5.9.6 リリース</li>
 </ul>
 </dl>
diff --git a/src/big5.c b/src/big5.c
index 3d44975..bc713ab 100644
--- a/src/big5.c
+++ b/src/big5.c
@@ -55,9 +55,28 @@ big5_mbc_enc_len(const UChar* p)
 }
 
 static int
-is_valid_mbc_string(const UChar* s, const UChar* end)
+is_valid_mbc_string(const UChar* p, const UChar* end)
 {
-  return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_BIG5, s, end);
+  while (p < end) {
+    if (*p < 0x80) {
+      p++;
+    }
+    else if (*p < 0xa1) {
+      return FALSE;
+    }
+    else if (*p < 0xff) {
+      p++;
+      if (p >= end)  return FALSE;
+      if (*p < 0x40) return FALSE;
+      if (*p > 0x7e && *p < 0xa1) return FALSE;
+      if (*p == 0xff) return FALSE;
+      p++;
+    }
+    else
+      return FALSE;
+  }
+
+  return TRUE;
 }
 
 static OnigCodePoint
diff --git a/src/euc_jp.c b/src/euc_jp.c
index 19422ce..3b54e95 100644
--- a/src/euc_jp.c
+++ b/src/euc_jp.c
@@ -57,9 +57,39 @@ mbc_enc_len(const UChar* p)
 }
 
 static int
-is_valid_mbc_string(const UChar* s, const UChar* end)
+is_valid_mbc_string(const UChar* p, const UChar* end)
 {
-  return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_EUC_JP, s, end);
+  while (p < end) {
+    if (*p < 0x80) {
+      p++;
+    }
+    else if (*p > 0xa0) {
+      if (*p == 0xff) return FALSE;
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0xa1 || *p == 0xff) return FALSE;
+      p++;
+    }
+    else if (*p == 0x8e) {
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0xa1 || *p > 0xdf) return FALSE;
+      p++;
+    }
+    else if (*p == 0x8f) {
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0xa1 || *p == 0xff) return FALSE;
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0xa1 || *p == 0xff) return FALSE;
+      p++;
+    }
+    else
+      return FALSE;
+  }
+
+  return TRUE;
 }
 
 static OnigCodePoint
diff --git a/src/euc_kr.c b/src/euc_kr.c
index 12803cd..450caf1 100644
--- a/src/euc_kr.c
+++ b/src/euc_kr.c
@@ -55,9 +55,27 @@ euckr_mbc_enc_len(const UChar* p)
 }
 
 static int
-is_valid_mbc_string(const UChar* s, const UChar* end)
+is_valid_mbc_string(const UChar* p, const UChar* end)
 {
-  return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_EUC_KR, s, end);
+  while (p < end) {
+    if (*p < 0x80) {
+      p++;
+    }
+    else if (*p < 0xa1) {
+      return FALSE;
+    }
+    else if (*p < 0xff) {
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0xa1 || *p == 0xff)
+	return FALSE;
+      p++;
+    }
+    else
+      return FALSE;
+  }
+
+  return TRUE;
 }
 
 static OnigCodePoint
diff --git a/src/euc_tw.c b/src/euc_tw.c
index 4e07567..b3ee628 100644
--- a/src/euc_tw.c
+++ b/src/euc_tw.c
@@ -55,9 +55,42 @@ euctw_mbc_enc_len(const UChar* p)
 }
 
 static int
-is_valid_mbc_string(const UChar* s, const UChar* end)
+is_valid_mbc_string(const UChar* p, const UChar* end)
 {
-  return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_EUC_TW, s, end);
+  while (p < end) {
+    if (*p < 0x80) {
+      p++;
+    }
+    else if (*p < 0xa1) {
+      if (*p == 0x8e) {
+	p++;
+	if (p >= end) return FALSE;
+	if (*p < 0xa1 || *p > 0xb0) return FALSE;
+	p++;
+	if (p >= end) return FALSE;
+	if (*p < 0xa1 || *p == 0xff)
+	  return FALSE;
+	p++;
+	if (p >= end) return FALSE;
+	if (*p < 0xa1 || *p == 0xff)
+	  return FALSE;
+	p++;
+      }
+      else
+	return FALSE;
+    }
+    else if (*p < 0xff) {
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0xa1 || *p == 0xff)
+	return FALSE;
+      p++;
+    }
+    else
+      return FALSE;
+  }
+
+  return TRUE;
 }
 
 static OnigCodePoint
diff --git a/src/gb18030.c b/src/gb18030.c
index 36fc3de..c8b5865 100644
--- a/src/gb18030.c
+++ b/src/gb18030.c
@@ -76,9 +76,43 @@ gb18030_mbc_enc_len(const UChar* p)
 }
 
 static int
-is_valid_mbc_string(const UChar* s, const UChar* end)
+is_valid_mbc_string(const UChar* p, const UChar* end)
 {
-  return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_GB18030, s, end);
+  while (p < end) {
+    if (*p < 0x80) {
+      p++;
+    }
+    else if (*p == 0x80 || *p == 0xff) {
+      return FALSE;
+    }
+    else {
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0x40) {
+	if (*p < 0x30 || *p > 0x39)
+	  return FALSE;
+
+	p++;
+	if (p >= end) return FALSE;
+	if (*p < 0x81 || *p == 0xff) return FALSE;
+
+	p++;
+	if (p >= end) return FALSE;
+	if (*p < 0x30 || *p > 0x39)
+	  return FALSE;
+
+	p++;
+      }
+      else if (*p == 0x7f || *p == 0xff) {
+	return FALSE;
+      }
+      else {
+	p++;
+      }
+    }
+  }
+
+  return TRUE;
 }
 
 static OnigCodePoint
diff --git a/src/onigposix.h b/src/onigposix.h
index 6c41537..2af3717 100644
--- a/src/onigposix.h
+++ b/src/onigposix.h
@@ -39,7 +39,7 @@ extern "C" {
 #define REG_NEWLINE        (1<<1)
 #define REG_NOTBOL         (1<<2)
 #define REG_NOTEOL         (1<<3)
-#define REG_EXTENDED       (1<<4) /* if not setted, Basic Onigular Expression */
+#define REG_EXTENDED       (1<<4) /* if not set, Basic Onigular Expression */
 #define REG_NOSUB          (1<<5)
 
 /* POSIX error codes */
diff --git a/src/oniguruma.h b/src/oniguruma.h
index 5aa49f6..6090165 100644
--- a/src/oniguruma.h
+++ b/src/oniguruma.h
@@ -36,7 +36,7 @@ extern "C" {
 #define ONIGURUMA
 #define ONIGURUMA_VERSION_MAJOR   6
 #define ONIGURUMA_VERSION_MINOR   1
-#define ONIGURUMA_VERSION_TEENY   1
+#define ONIGURUMA_VERSION_TEENY   2
 
 #ifdef __cplusplus
 # ifndef  HAVE_PROTOTYPES
@@ -364,7 +364,7 @@ int onigenc_strlen_null P_((OnigEncoding enc, const OnigUChar* p));
 ONIG_EXTERN
 int onigenc_str_bytelen_null P_((OnigEncoding enc, const OnigUChar* p));
 ONIG_EXTERN
-int onigenc_is_valid_mbc_string P_((OnigEncoding enc, const UChar* s, const UChar* end));
+int onigenc_is_valid_mbc_string P_((OnigEncoding enc, const OnigUChar* s, const OnigUChar* end));
 
 
 
@@ -398,7 +398,8 @@ typedef unsigned int        OnigOptionType;
 #define ONIG_OPTION_NOTBOL               (ONIG_OPTION_CAPTURE_GROUP << 1)
 #define ONIG_OPTION_NOTEOL               (ONIG_OPTION_NOTBOL << 1)
 #define ONIG_OPTION_POSIX_REGION         (ONIG_OPTION_NOTEOL << 1)
-#define ONIG_OPTION_MAXBIT               ONIG_OPTION_POSIX_REGION  /* limit */
+#define ONIG_OPTION_CHECK_VALIDITY_OF_STRING   (ONIG_OPTION_POSIX_REGION << 1)
+#define ONIG_OPTION_MAXBIT               ONIG_OPTION_CHECK_VALIDITY_OF_STRING  /* limit */
 
 #define ONIG_OPTION_ON(options,regopt)      ((options) |= (regopt))
 #define ONIG_OPTION_OFF(options,regopt)     ((options) &= ~(regopt))
@@ -742,7 +743,7 @@ void onig_free P_((OnigRegex));
 ONIG_EXTERN
 void onig_free_body P_((OnigRegex));
 ONIG_EXTERN
-int onig_scan(regex_t* reg, const UChar* str, const UChar* end, OnigRegion* region, OnigOptionType option, int (*scan_callback)(int, int, OnigRegion*, void*), void* callback_arg);
+int onig_scan(regex_t* reg, const OnigUChar* str, const OnigUChar* end, OnigRegion* region, OnigOptionType option, int (*scan_callback)(int, int, OnigRegion*, void*), void* callback_arg);
 ONIG_EXTERN
 int onig_search P_((OnigRegex, const OnigUChar* str, const OnigUChar* end, const OnigUChar* start, const OnigUChar* range, OnigRegion* region, OnigOptionType option));
 ONIG_EXTERN
diff --git a/src/regcomp.c b/src/regcomp.c
index 0235a9f..11ba1e7 100644
--- a/src/regcomp.c
+++ b/src/regcomp.c
@@ -1795,6 +1795,11 @@ noname_disable_map(Node** plink, GroupNumRemap* map, int* counter)
     }
     break;
 
+  case NT_ANCHOR:
+    if (NANCHOR(node)->target)
+      r = noname_disable_map(&(NANCHOR(node)->target), map, counter);
+    break;
+
   default:
     break;
   }
@@ -1853,6 +1858,11 @@ renumber_by_map(Node* node, GroupNumRemap* map)
     r = renumber_node_backref(node, map);
     break;
 
+  case NT_ANCHOR:
+    if (NANCHOR(node)->target)
+      r = renumber_by_map(NANCHOR(node)->target, map);
+    break;
+
   default:
     break;
   }
@@ -1884,6 +1894,11 @@ numbered_ref_check(Node* node)
       return ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED;
     break;
 
+  case NT_ANCHOR:
+    if (NANCHOR(node)->target)
+      r = numbered_ref_check(NANCHOR(node)->target);
+    break;
+
   default:
     break;
   }
@@ -3875,9 +3890,10 @@ setup_tree(Node* node, regex_t* reg, int state, ScanEnv* env)
 #define ALLOWED_ENCLOSE_IN_LB_NOT   ENCLOSE_OPTION
 
 #define ALLOWED_ANCHOR_IN_LB \
-( ANCHOR_LOOK_BEHIND | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION )
+( ANCHOR_LOOK_BEHIND | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION | ANCHOR_WORD_BOUND | ANCHOR_NOT_WORD_BOUND | ANCHOR_WORD_BEGIN | ANCHOR_WORD_END )
+
 #define ALLOWED_ANCHOR_IN_LB_NOT \
-( ANCHOR_LOOK_BEHIND | ANCHOR_LOOK_BEHIND_NOT | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION )
+( ANCHOR_LOOK_BEHIND | ANCHOR_LOOK_BEHIND_NOT | ANCHOR_BEGIN_LINE | ANCHOR_END_LINE | ANCHOR_BEGIN_BUF | ANCHOR_BEGIN_POSITION | ANCHOR_WORD_BOUND | ANCHOR_NOT_WORD_BOUND | ANCHOR_WORD_BEGIN | ANCHOR_WORD_END )
 
       case ANCHOR_LOOK_BEHIND:
         {
@@ -3913,7 +3929,7 @@ setup_tree(Node* node, regex_t* reg, int state, ScanEnv* env)
   return r;
 }
 
-/* set skip map for Boyer-Moor search */
+/* set skip map for Boyer-Moore search */
 static int
 set_bm_skip(UChar* s, UChar* end, OnigEncoding enc ARG_UNUSED,
 	    UChar skip[], int** int_skip)
@@ -4641,7 +4657,7 @@ optimize_node_left(Node* node, NodeOptInfo* opt, OptEnv* env)
       int i, z;
       CClassNode* cc = NCCLASS(node);
 
-      /* no need to check ignore case. (setted in setup_tree()) */
+      /* no need to check ignore case. (set in setup_tree()) */
 
       if (IS_NOT_NULL(cc->mbuf) || IS_NCCLASS_NOT(cc)) {
         OnigLen min = ONIGENC_MBC_MINLEN(env->enc);
@@ -4712,6 +4728,8 @@ optimize_node_left(Node* node, NodeOptInfo* opt, OptEnv* env)
     case ANCHOR_END_BUF:
     case ANCHOR_SEMI_END_BUF:
     case ANCHOR_END_LINE:
+    case ANCHOR_PREC_READ_NOT:
+    case ANCHOR_LOOK_BEHIND:
       add_opt_anc_info(&opt->anc, NANCHOR(node)->type);
       break;
 
@@ -4734,8 +4752,6 @@ optimize_node_left(Node* node, NodeOptInfo* opt, OptEnv* env)
       }
       break;
 
-    case ANCHOR_PREC_READ_NOT:
-    case ANCHOR_LOOK_BEHIND: /* Sorry, I can't make use of it. */
     case ANCHOR_LOOK_BEHIND_NOT:
       break;
     }
@@ -4989,6 +5005,9 @@ set_optimize_info_from_tree(Node* node, regex_t* reg, ScanEnv* scan_env)
   reg->anchor = opt.anc.left_anchor & (ANCHOR_BEGIN_BUF |
         ANCHOR_BEGIN_POSITION | ANCHOR_ANYCHAR_STAR | ANCHOR_ANYCHAR_STAR_ML);
 
+  if ((opt.anc.left_anchor & (ANCHOR_LOOK_BEHIND | ANCHOR_PREC_READ_NOT)) != 0)
+    reg->anchor &= ~ANCHOR_ANYCHAR_STAR_ML;
+
   reg->anchor |= opt.anc.right_anchor & (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF);
 
   if (reg->anchor & (ANCHOR_END_BUF | ANCHOR_SEMI_END_BUF)) {
@@ -5133,7 +5152,7 @@ print_anchor(FILE* f, int anchor)
   }
   if (anchor & ANCHOR_ANYCHAR_STAR_ML) {
     if (q) fprintf(f, ", ");
-    fprintf(f, "anychar-star-pl");
+    fprintf(f, "anychar-star-ml");
   }
 
   fprintf(f, "]");
@@ -5252,6 +5271,7 @@ onig_compile(regex_t* reg, const UChar* pattern, const UChar* pattern_end,
   UnsetAddrList  uslist;
 #endif
 
+  root = 0;
   if (IS_NOT_NULL(einfo)) einfo->par = (UChar* )NULL;
 
 #ifdef ONIG_DEBUG
diff --git a/src/regenc.h b/src/regenc.h
index 49227fa..e119dab 100644
--- a/src/regenc.h
+++ b/src/regenc.h
@@ -110,7 +110,7 @@ struct PropertyNameCtype {
 /* #define USE_CRNL_AS_LINE_TERMINATOR */
 #define USE_UNICODE_PROPERTIES
 /* #define USE_UNICODE_CASE_FOLD_TURKISH_AZERI */
-/* #define USE_UNICODE_ALL_LINE_TERMINATORS */  /* see Unicode.org UTF#18 */
+/* #define USE_UNICODE_ALL_LINE_TERMINATORS */  /* see Unicode.org UTS #18 */
 
 
 #define ONIG_ENCODING_INIT_DEFAULT           ONIG_ENCODING_ASCII
diff --git a/src/regexec.c b/src/regexec.c
index 70ac89e..7e8d3d1 100644
--- a/src/regexec.c
+++ b/src/regexec.c
@@ -3111,6 +3111,13 @@ onig_match(regex_t* reg, const UChar* str, const UChar* end, const UChar* at, On
     r = 0;
 
   if (r == 0) {
+    if (ONIG_IS_OPTION_ON(option, ONIG_OPTION_CHECK_VALIDITY_OF_STRING)) {
+      if (! ONIGENC_IS_VALID_MBC_STRING(reg->enc, str, end)) {
+        r = ONIGERR_INVALID_WIDE_CHAR_VALUE;
+        goto end;
+      }
+    }
+
     prev = (UChar* )onigenc_get_prev_char_head(reg->enc, str, at);
     r = match_at(reg, str, end,
 #ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
@@ -3119,6 +3126,7 @@ onig_match(regex_t* reg, const UChar* str, const UChar* end, const UChar* at, On
 		 at, prev, &msa);
   }
 
+ end:
   MATCH_ARG_FREE(msa);
   return r;
 }
@@ -3391,6 +3399,13 @@ onig_search(regex_t* reg, const UChar* str, const UChar* end,
 
   if (start > end || start < str) goto mismatch_no_msa;
 
+  if (ONIG_IS_OPTION_ON(option, ONIG_OPTION_CHECK_VALIDITY_OF_STRING)) {
+    if (! ONIGENC_IS_VALID_MBC_STRING(reg->enc, str, end)) {
+      r = ONIGERR_INVALID_WIDE_CHAR_VALUE;
+      goto finish_no_msa;
+    }
+  }
+
 
 #ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
 #ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
@@ -3707,7 +3722,7 @@ onig_search(regex_t* reg, const UChar* str, const UChar* end,
   MATCH_ARG_FREE(msa);
 
   /* If result is mismatch and no FIND_NOT_EMPTY option,
-     then the region is not setted in match_at(). */
+     then the region is not set in match_at(). */
   if (IS_FIND_NOT_EMPTY(reg->options) && region
 #ifdef USE_POSIX_API_REGION_OPTION
       && !IS_POSIX_REGION(option)
@@ -3747,6 +3762,13 @@ onig_scan(regex_t* reg, const UChar* str, const UChar* end,
   int rs;
   const UChar* start;
 
+  if (ONIG_IS_OPTION_ON(option, ONIG_OPTION_CHECK_VALIDITY_OF_STRING)) {
+    if (! ONIGENC_IS_VALID_MBC_STRING(reg->enc, str, end))
+      return ONIGERR_INVALID_WIDE_CHAR_VALUE;
+
+    ONIG_OPTION_OFF(option, ONIG_OPTION_CHECK_VALIDITY_OF_STRING);
+  }
+
   n = 0;
   start = str;
   while (1) {
diff --git a/src/regint.h b/src/regint.h
index d320e26..7a3283d 100644
--- a/src/regint.h
+++ b/src/regint.h
@@ -685,7 +685,7 @@ typedef struct _OnigStackType {
     struct {
       int num;           /* memory num */
       UChar *pstr;       /* start/end position */
-      /* Following information is setted, if this stack type is MEM-START */
+      /* Following information is set, if this stack type is MEM-START */
       OnigStackIndex start;  /* prev. info (for backtrack  "(...)*" ) */
       OnigStackIndex end;    /* prev. info (for backtrack  "(...)*" ) */
     } mem;
diff --git a/src/regparse.c b/src/regparse.c
index e8a6e20..8f1d1cb 100644
--- a/src/regparse.c
+++ b/src/regparse.c
@@ -29,6 +29,10 @@
 #include "regparse.h"
 #include "st.h"
 
+#ifdef DEBUG_NODE_FREE
+#include <stdio.h>
+#endif
+
 #define WARN_BUFSIZE    256
 
 #define CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
@@ -1003,13 +1007,16 @@ scan_env_set_mem_node(ScanEnv* env, int num, Node* node)
   return 0;
 }
 
-
 extern void
 onig_node_free(Node* node)
 {
  start:
   if (IS_NULL(node)) return ;
 
+#ifdef DEBUG_NODE_FREE
+  fprintf(stderr, "onig_node_free: %p\n", node);
+#endif
+
   switch (NTYPE(node)) {
   case NT_STR:
     if (NSTR(node)->capa != 0 &&
@@ -1071,6 +1078,9 @@ node_new(void)
 
   node = (Node* )xmalloc(sizeof(Node));
   /* xmemset(node, 0, sizeof(Node)); */
+#ifdef DEBUG_NODE_FREE
+  fprintf(stderr, "node_new: %p\n", node);
+#endif
   return node;
 }
 
@@ -1449,7 +1459,7 @@ str_node_split_last_char(StrNode* sn, OnigEncoding enc)
 
   if (sn->end > sn->s) {
     p = onigenc_get_prev_char_head(enc, sn->s, sn->end);
-    if (p && p > sn->s) { /* can be splitted. */
+    if (p && p > sn->s) { /* can be split. */
       n = node_new_str(p, sn->end);
       if ((sn->flag & NSTR_RAW) != 0)
         NSTRING_SET_RAW(n);
@@ -2520,7 +2530,7 @@ fetch_name_with_level(OnigCodePoint start_code, UChar** src, UChar* end,
 #endif /* USE_BACKREF_WITH_LEVEL */
 
 /*
-  def: 0 -> define name    (don't allow number name)
+  ref: 0 -> define name    (don't allow number name)
        1 -> reference name (allow number name)
 */
 static int
@@ -3000,7 +3010,7 @@ fetch_token_in_cc(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env)
   else if (c == '[') {
     if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_POSIX_BRACKET) && (PPEEK_IS(':'))) {
       OnigCodePoint send[] = { (OnigCodePoint )':', (OnigCodePoint )']' };
-      tok->backp = p; /* point at '[' is readed */
+      tok->backp = p; /* point at '[' is read */
       PINC;
       if (str_exist_check_with_esc(send, 2, p, end,
                                    (OnigCodePoint )']', enc, syn)) {
@@ -4318,7 +4328,10 @@ parse_char_class(Node** np, OnigToken* tok, UChar** src, UChar* end,
         CClassNode* acc;
 
         r = parse_char_class(&anode, tok, &p, end, env);
-        if (r != 0) goto cc_open_err;
+        if (r != 0) {
+	  onig_node_free(anode);
+	  goto cc_open_err;
+	}
         acc = NCCLASS(anode);
         r = or_cclass(cc, acc, env->enc);
 
@@ -4412,7 +4425,6 @@ parse_char_class(Node** np, OnigToken* tok, UChar** src, UChar* end,
  err:
   if (cc != NCCLASS(*np))
     bbuf_free(cc->mbuf);
-  onig_node_free(*np);
   return r;
 }
 
@@ -4542,11 +4554,9 @@ parse_enclose(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
         CHECK_NULL_RETURN_MEMERR(*np);
         num = scan_env_add_mem_entry(env);
         if (num < 0) {
-          onig_node_free(*np);
           return num;
         }
         else if (num >= (int )BIT_STATUS_BITS_NUM) {
-          onig_node_free(*np);
           return ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY;
         }
         NENCLOSE(*np)->regnum = num;
@@ -4614,7 +4624,10 @@ parse_enclose(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
             if (r < 0) return r;
             r = parse_subexp(&target, tok, term, &p, end, env);
             env->option = prev;
-            if (r < 0) return r;
+            if (r < 0) {
+	      onig_node_free(target);
+	      return r;
+	    }
             *np = node_new_option(option);
             CHECK_NULL_RETURN_MEMERR(*np);
             NENCLOSE(*np)->target = target;
@@ -4647,7 +4660,10 @@ parse_enclose(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
   r = fetch_token(tok, &p, end, env);
   if (r < 0) return r;
   r = parse_subexp(&target, tok, term, &p, end, env);
-  if (r < 0) return r;
+  if (r < 0) {
+    onig_node_free(target);
+    return r;
+  }
 
   if (NTYPE(*np) == NT_ANCHOR)
     NANCHOR(*np)->target = target;
@@ -4908,7 +4924,10 @@ parse_exp(Node** np, OnigToken* tok, int term,
       if (r < 0) return r;
       r = parse_subexp(&target, tok, term, src, end, env);
       env->option = prev;
-      if (r < 0) return r;
+      if (r < 0) {
+        onig_node_free(target);
+        return r;
+      }
       NENCLOSE(*np)->target = target;	
       return tok->type;
     }
@@ -5220,7 +5239,10 @@ parse_branch(Node** top, OnigToken* tok, int term,
 
   *top = NULL;
   r = parse_exp(&node, tok, term, src, end, env);
-  if (r < 0) return r;
+  if (r < 0) {
+    onig_node_free(node);
+    return r;
+  }
 
   if (r == TK_EOT || r == term || r == TK_ALT) {
     *top = node;
@@ -5230,7 +5252,10 @@ parse_branch(Node** top, OnigToken* tok, int term,
     headp = &(NCDR(*top));
     while (r != TK_EOT && r != term && r != TK_ALT) {
       r = parse_exp(&node, tok, term, src, end, env);
-      if (r < 0) return r;
+      if (r < 0) {
+	onig_node_free(node);
+	return r;
+      }
 
       if (NTYPE(node) == NT_LIST) {
         *headp = node;
@@ -5272,8 +5297,10 @@ parse_subexp(Node** top, OnigToken* tok, int term,
       r = fetch_token(tok, src, end, env);
       if (r < 0) return r;
       r = parse_branch(&node, tok, term, src, end, env);
-      if (r < 0) return r;
-
+      if (r < 0) {
+        onig_node_free(node);
+        return r;
+      }
       *headp = onig_node_new_alt(node, NULL);
       headp = &(NCDR(*headp));
     }
@@ -5282,8 +5309,8 @@ parse_subexp(Node** top, OnigToken* tok, int term,
       goto err;
   }
   else {
-  err:
     onig_node_free(node);
+  err:
     if (term == TK_SUBEXP_CLOSE)
       return ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS;
     else
diff --git a/src/sjis.c b/src/sjis.c
index a607b3d..3378474 100644
--- a/src/sjis.c
+++ b/src/sjis.c
@@ -77,9 +77,36 @@ mbc_enc_len(const UChar* p)
 }
 
 static int
-is_valid_mbc_string(const UChar* s, const UChar* end)
+is_valid_mbc_string(const UChar* p, const UChar* end)
 {
-  return onigenc_length_check_is_valid_mbc_string(ONIG_ENCODING_SJIS, s, end);
+  while (p < end) {
+    if (*p < 0x80) {
+      p++;
+    }
+    else if (*p < 0xa1) {
+      if (*p == 0xa0 || *p == 0x80)
+	return FALSE;
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0x40 || *p > 0xfc || *p == 0x7f)
+	return FALSE;
+      p++;
+    }
+    else if (*p < 0xe0) {
+      p++;
+    }
+    else if (*p < 0xfd) {
+      p++;
+      if (p >= end) return FALSE;
+      if (*p < 0x40 || *p > 0xfc || *p == 0x7f)
+	return FALSE;
+      p++;
+    }
+    else
+      return FALSE;
+  }
+
+  return TRUE;
 }
 
 static int