diff --git a/ChangeLog b/ChangeLog
index 482260c8c3..82d417a812 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,32 @@
+1998-04-07 20:32  Ulrich Drepper  <drepper@cygnus.com>
+
+	* wcsmbs/btowc.c: Fix dozends of bugs in untested code.
+	* wcsmbs/mbrtowc.c: Likewise.
+	* wcsmbs/mbsnrtowcs.c: Likewise.
+	* wcsmbs/mbsrtowcs.c: Likewise.
+	* wcsmbs/wcrtomb.c: Likewise.
+	* wcsmbs/wcsnrtombs.c: Likewise.
+	* wcsmbs/wcsrtombs.c: Likewise.
+	* wcsmbs/wctob.c: Likewise.
+
+	* iconv/gconv-simple.c (__gconv_transform_ascii_ucs4): Compute
+	position of next output character correctly.
+	(__gconv_transform_ucs4_ascii): Count used input bytes correctly.
+
+	* stdio-common/vfprintf.c (vfprintf): Clear state before used.
+
+	* stdlib/strtod.c: Don't use mbtowc.
+
+1998-04-07 19:07  H.J. Lu  <hjl@gnu.org>
+
+	* libio/fileops.c (_IO_file_xsgetn): Call __underflow () when
+	what we want is smaller than a buffer.
+
+1998-04-07 18:14  Ulrich Drepper  <drepper@cygnus.com>
+
+	* elf/dl-support.c (_dl_important_hwcaps): Define dummy version of
+	this function.
+
 1998-04-07  Ulrich Drepper  <drepper@cygnus.com>
 
 	* configure.in: Recognize --with-headers flag and determine
diff --git a/configure b/configure
index b5f8adadd2..14b0df1bc5 100755
--- a/configure
+++ b/configure
@@ -34,6 +34,10 @@ ac_help="$ac_help
   --with-elf		  if using the ELF object format"
 ac_help="$ac_help
   --without-cvs	  if CVS should not be used"
+ac_help="$ac_help
+  --with-headers=PATH     location of system headers to use
+                          [e.g. /usr/src/linux/include]
+                          [default=compiler default]"
 ac_help="$ac_help
   --enable-libio          build in GNU libio instead of GNU stdio"
 ac_help="$ac_help
@@ -640,6 +644,15 @@ fi
 
 
 
+# Check whether --with-headers or --without-headers was given.
+if test "${with_headers+set}" = set; then
+  withval="$with_headers"
+  sysheaders=$withval
+else
+  sysheaders=''
+fi
+
+
 # Check whether --enable-libio or --disable-libio was given.
 if test "${enable_libio+set}" = set; then
   enableval="$enable_libio"
@@ -783,7 +796,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:787: checking host system type" >&5
+echo "configure:800: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -906,7 +919,7 @@ fi
 # This can take a while to compute.
 sysdep_dir=$srcdir/sysdeps
 echo $ac_n "checking sysdep dirs""... $ac_c" 1>&6
-echo "configure:910: checking sysdep dirs" >&5
+echo "configure:923: checking sysdep dirs" >&5
 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
 
@@ -1111,7 +1124,7 @@ echo "$ac_t""sysdeps/generic" 1>&6
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1115: checking for a BSD compatible install" >&5
+echo "configure:1128: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1165,7 +1178,7 @@ if test "$INSTALL" = "${srcdir}/install-sh -c"; then
   INSTALL='\$(..)./install-sh -c'
 fi
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:1169: checking whether ln -s works" >&5
+echo "configure:1182: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1188,7 +1201,7 @@ fi
 
 # These programs are version sensitive.
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:1192: checking build system type" >&5
+echo "configure:1205: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -1216,7 +1229,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1220: checking for $ac_word" >&5
+echo "configure:1233: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1249,7 +1262,7 @@ if test -z "$CC"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $CC""... $ac_c" 1>&6
-echo "configure:1253: checking version of $CC" >&5
+echo "configure:1266: checking version of $CC" >&5
   ac_prog_version=`$CC -v 2>&1 | sed -n 's/^.*version \([egcst0-9.-]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1269,7 +1282,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1273: checking for $ac_word" >&5
+echo "configure:1286: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MAKE'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1302,7 +1315,7 @@ if test -z "$MAKE"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MAKE""... $ac_c" 1>&6
-echo "configure:1306: checking version of $MAKE" >&5
+echo "configure:1319: checking version of $MAKE" >&5
   ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*version \([0-9][0-9.]*\), by.*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1323,7 +1336,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1327: checking for $ac_word" >&5
+echo "configure:1340: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1356,7 +1369,7 @@ if test -z "$MSGFMT"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MSGFMT""... $ac_c" 1>&6
-echo "configure:1360: checking version of $MSGFMT" >&5
+echo "configure:1373: checking version of $MSGFMT" >&5
   ac_prog_version=`$MSGFMT --version 2>&1 | sed -n 's/^.*GNU gettext.*\([0-9][0-9]*\.[0-9]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1376,7 +1389,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1380: checking for $ac_word" >&5
+echo "configure:1393: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MAKEINFO'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1409,7 +1422,7 @@ if test -z "$MAKEINFO"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MAKEINFO""... $ac_c" 1>&6
-echo "configure:1413: checking version of $MAKEINFO" >&5
+echo "configure:1426: checking version of $MAKEINFO" >&5
   ac_prog_version=`$MAKEINFO --version 2>&1 | sed -n 's/^.*GNU texinfo \([0-9][0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1438,7 +1451,7 @@ test -n "$aux_missing" && echo "configure: warning:
 
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1442: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:1455: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1451,11 +1464,11 @@ ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS
 cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 1455 "configure"
+#line 1468 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-if { (eval echo configure:1459: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1472: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1480,7 +1493,7 @@ else
  cross_linkable=yes
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1484: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1497: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_cross'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1492,7 +1505,7 @@ echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1496: checking whether we are using GNU C" >&5
+echo "configure:1509: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1501,7 +1514,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1505: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1518: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1514,7 +1527,7 @@ if test $ac_cv_prog_gcc != yes; then
 fi
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:1518: checking build system type" >&5
+echo "configure:1531: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -1537,7 +1550,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1541: checking for $ac_word" >&5
+echo "configure:1554: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_BUILD_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1568,7 +1581,7 @@ done
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1572: checking how to run the C preprocessor" >&5
+echo "configure:1585: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1583,13 +1596,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1587 "configure"
+#line 1600 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1593: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1606: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -1600,13 +1613,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1604 "configure"
+#line 1617 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1610: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1623: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -1639,7 +1652,7 @@ LD=`$CC -print-prog-name=ld`
 
 # Determine whether we are using GNU binutils.
 echo $ac_n "checking whether $AS is GNU as""... $ac_c" 1>&6
-echo "configure:1643: checking whether $AS is GNU as" >&5
+echo "configure:1656: checking whether $AS is GNU as" >&5
 if eval "test \"`echo '$''{'libc_cv_prog_as_gnu'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1657,7 +1670,7 @@ rm -f a.out
 gnu_as=$libc_cv_prog_as_gnu
 
 echo $ac_n "checking whether $LD is GNU ld""... $ac_c" 1>&6
-echo "configure:1661: checking whether $LD is GNU ld" >&5
+echo "configure:1674: checking whether $LD is GNU ld" >&5
 if eval "test \"`echo '$''{'libc_cv_prog_ld_gnu'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1676,7 +1689,7 @@ gnu_ld=$libc_cv_prog_ld_gnu
 # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1680: checking for $ac_word" >&5
+echo "configure:1693: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1707,7 +1720,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1711: checking for $ac_word" >&5
+echo "configure:1724: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1738,7 +1751,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1742: checking for $ac_word" >&5
+echo "configure:1755: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1772,7 +1785,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}mig", so it can be a program name with args.
 set dummy ${ac_tool_prefix}mig; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1776: checking for $ac_word" >&5
+echo "configure:1789: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MIG'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1801,9 +1814,18 @@ fi
 
 
 
+# if using special system headers, find out the compiler's sekrit
+# header directory and add that to the list.  NOTE: Only does the right
+# thing on a system that doesn't need fixincludes.  (Not presently a problem.)
+if test -n "$sysheaders"; then
+  ccheaders=`$CC -print-file-name=include`
+  SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders"
+fi
+
+
 # check if ar takes S
 echo $ac_n "checking for ar S""... $ac_c" 1>&6
-echo "configure:1807: checking for ar S" >&5
+echo "configure:1829: checking for ar S" >&5
 if eval "test \"`echo '$''{'libc_cv_ar_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1811,7 +1833,7 @@ else
 tmplib=lib$$.a
 rm -f $tmpo $tmplib
 touch $tmpo
-if { ac_try='${AR-ar} rcuS $tmplib $tmpo > /dev/null 2>&1'; { (eval echo configure:1815: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+if { ac_try='${AR-ar} rcuS $tmplib $tmpo > /dev/null 2>&1'; { (eval echo configure:1837: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_ar_S=yes
 else
   libc_cv_ar_S=no
@@ -1829,7 +1851,7 @@ echo "$ac_t""$libc_cv_ar_S" 1>&6
 # - two terminals occur directly after each other
 # - the path contains an element with a dot in it
 echo $ac_n "checking LD_LIBRARY_PATH variable""... $ac_c" 1>&6
-echo "configure:1833: checking LD_LIBRARY_PATH variable" >&5
+echo "configure:1855: checking LD_LIBRARY_PATH variable" >&5
 case ${LD_LIBRARY_PATH} in
   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
     ld_library_path_setting="contains current directory"
@@ -1849,7 +1871,7 @@ fi
 # Extract the first word of "bash", so it can be a program name with args.
 set dummy bash; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1853: checking for $ac_word" >&5
+echo "configure:1875: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_BASH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1891,7 +1913,7 @@ if test "$BASH" = no; then
   # Extract the first word of "ksh", so it can be a program name with args.
 set dummy ksh; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1895: checking for $ac_word" >&5
+echo "configure:1917: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_KSH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1937,7 +1959,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1941: checking for $ac_word" >&5
+echo "configure:1963: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_PERL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1972,7 +1994,7 @@ test -n "$PERL" || PERL="no"
 
 
 echo $ac_n "checking for signed size_t type""... $ac_c" 1>&6
-echo "configure:1976: checking for signed size_t type" >&5
+echo "configure:1998: checking for signed size_t type" >&5
 if eval "test \"`echo '$''{'libc_cv_signed_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1996,12 +2018,12 @@ EOF
 fi
 
 echo $ac_n "checking for libc-friendly stddef.h""... $ac_c" 1>&6
-echo "configure:2000: checking for libc-friendly stddef.h" >&5
+echo "configure:2022: checking for libc-friendly stddef.h" >&5
 if eval "test \"`echo '$''{'libc_cv_friendly_stddef'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2005 "configure"
+#line 2027 "configure"
 #include "confdefs.h"
 #define __need_size_t
 #define __need_wchar_t
@@ -2016,7 +2038,7 @@ size_t size; wchar_t wchar;
 if (&size == NULL || &wchar == NULL) abort ();
 ; return 0; }
 EOF
-if { (eval echo configure:2020: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2042: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_friendly_stddef=yes
 else
@@ -2035,7 +2057,7 @@ override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
 fi
 
 echo $ac_n "checking whether we need to use -P to assemble .S files""... $ac_c" 1>&6
-echo "configure:2039: checking whether we need to use -P to assemble .S files" >&5
+echo "configure:2061: checking whether we need to use -P to assemble .S files" >&5
 if eval "test \"`echo '$''{'libc_cv_need_minus_P'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2058,7 +2080,7 @@ asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
 fi
 
 echo $ac_n "checking for assembler global-symbol directive""... $ac_c" 1>&6
-echo "configure:2062: checking for assembler global-symbol directive" >&5
+echo "configure:2084: checking for assembler global-symbol directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_global_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2088,7 +2110,7 @@ EOF
 fi
 
 echo $ac_n "checking for .set assembler directive""... $ac_c" 1>&6
-echo "configure:2092: checking for .set assembler directive" >&5
+echo "configure:2114: checking for .set assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_set_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2122,7 +2144,7 @@ EOF
 fi
 
 echo $ac_n "checking for .symver assembler directive""... $ac_c" 1>&6
-echo "configure:2126: checking for .symver assembler directive" >&5
+echo "configure:2148: checking for .symver assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_symver_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2141,7 +2163,7 @@ fi
 
 echo "$ac_t""$libc_cv_asm_symver_directive" 1>&6
 echo $ac_n "checking for ld --version-script""... $ac_c" 1>&6
-echo "configure:2145: checking for ld --version-script" >&5
+echo "configure:2167: checking for ld --version-script" >&5
 if eval "test \"`echo '$''{'libc_cv_ld_version_script_option'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2164,7 +2186,7 @@ EOF
     if { ac_try='${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
 					-nostartfiles -nostdlib
 					-Wl,--version-script,conftest.map
-		       1>&5'; { (eval echo configure:2168: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+		       1>&5'; { (eval echo configure:2190: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
     then
       libc_cv_ld_version_script_option=yes
     else
@@ -2202,7 +2224,7 @@ if test $VERSIONING = no; then
 fi
 if test $elf = yes; then
   echo $ac_n "checking for .previous assembler directive""... $ac_c" 1>&6
-echo "configure:2206: checking for .previous assembler directive" >&5
+echo "configure:2228: checking for .previous assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_previous_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2210,7 +2232,7 @@ else
 .section foo_section
 .previous
 EOF
-  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2214: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2236: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_asm_previous_directive=yes
   else
     libc_cv_asm_previous_directive=no
@@ -2226,7 +2248,7 @@ EOF
 
   else
     echo $ac_n "checking for .popsection assembler directive""... $ac_c" 1>&6
-echo "configure:2230: checking for .popsection assembler directive" >&5
+echo "configure:2252: checking for .popsection assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_popsection_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2234,7 +2256,7 @@ else
 .pushsection foo_section
 .popsection
 EOF
-    if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2238: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+    if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2260: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
       libc_cv_asm_popsection_directive=yes
     else
       libc_cv_asm_popsection_directive=no
@@ -2254,12 +2276,12 @@ fi
 
 if test $elf != yes; then
   echo $ac_n "checking for .init and .fini sections""... $ac_c" 1>&6
-echo "configure:2258: checking for .init and .fini sections" >&5
+echo "configure:2280: checking for .init and .fini sections" >&5
 if eval "test \"`echo '$''{'libc_cv_have_initfini'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2263 "configure"
+#line 2285 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2268,7 +2290,7 @@ asm (".section .init");
 				    asm (".text");
 ; return 0; }
 EOF
-if { (eval echo configure:2272: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2294: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_have_initfini=yes
 else
@@ -2296,19 +2318,19 @@ if test $elf = yes; then
 else
   if test $ac_cv_prog_cc_works = yes; then
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:2300: checking for _ prefix on C symbol names" >&5
+echo "configure:2322: checking for _ prefix on C symbol names" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2305 "configure"
+#line 2327 "configure"
 #include "confdefs.h"
 asm ("_glibc_foobar:");
 int main() {
 glibc_foobar ();
 ; return 0; }
 EOF
-if { (eval echo configure:2312: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:2334: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   libc_cv_asm_underscores=yes
 else
@@ -2323,17 +2345,17 @@ fi
 echo "$ac_t""$libc_cv_asm_underscores" 1>&6
   else
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:2327: checking for _ prefix on C symbol names" >&5
+echo "configure:2349: checking for _ prefix on C symbol names" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2332 "configure"
+#line 2354 "configure"
 #include "confdefs.h"
 void underscore_test(void) {
 return; }
 EOF
-if { (eval echo configure:2337: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2359: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   if grep _underscore_test conftest* >/dev/null; then
     rm -f conftest*
     libc_cv_asm_underscores=yes
@@ -2365,7 +2387,7 @@ if test $elf = yes; then
 fi
 
 echo $ac_n "checking for assembler .weak directive""... $ac_c" 1>&6
-echo "configure:2369: checking for assembler .weak directive" >&5
+echo "configure:2391: checking for assembler .weak directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_weak_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2388,7 +2410,7 @@ echo "$ac_t""$libc_cv_asm_weak_directive" 1>&6
 
 if test $libc_cv_asm_weak_directive = no; then
   echo $ac_n "checking for assembler .weakext directive""... $ac_c" 1>&6
-echo "configure:2392: checking for assembler .weakext directive" >&5
+echo "configure:2414: checking for assembler .weakext directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_weakext_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2426,7 +2448,7 @@ EOF
 fi
 
 echo $ac_n "checking for ld --no-whole-archive""... $ac_c" 1>&6
-echo "configure:2430: checking for ld --no-whole-archive" >&5
+echo "configure:2452: checking for ld --no-whole-archive" >&5
 if eval "test \"`echo '$''{'libc_cv_ld_no_whole_archive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2437,7 +2459,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -Wl,--no-whole-archive
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:2441: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:2463: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_ld_no_whole_archive=yes
 else
   libc_cv_ld_no_whole_archive=no
@@ -2448,7 +2470,7 @@ fi
 echo "$ac_t""$libc_cv_ld_no_whole_archive" 1>&6
 
 echo $ac_n "checking for gcc -fno-exceptions""... $ac_c" 1>&6
-echo "configure:2452: checking for gcc -fno-exceptions" >&5
+echo "configure:2474: checking for gcc -fno-exceptions" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_no_exceptions'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2459,7 +2481,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -fno-exceptions
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:2463: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:2485: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_no_exceptions=yes
 else
   libc_cv_gcc_no_exceptions=no
@@ -2471,14 +2493,14 @@ echo "$ac_t""$libc_cv_gcc_no_exceptions" 1>&6
 
 if test "$base_machine" = alpha ; then
 echo $ac_n "checking for function ..ng prefix""... $ac_c" 1>&6
-echo "configure:2475: checking for function ..ng prefix" >&5
+echo "configure:2497: checking for function ..ng prefix" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_alpha_ng_prefix'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<\EOF
 foo () { }
 EOF
-if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2482: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2504: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
 then
   libc_cv_gcc_alpha_ng_prefix=yes
 else
@@ -2502,12 +2524,12 @@ fi
 fi
 
 echo $ac_n "checking for DWARF2 unwind info support""... $ac_c" 1>&6
-echo "configure:2506: checking for DWARF2 unwind info support" >&5
+echo "configure:2528: checking for DWARF2 unwind info support" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_dwarf2_unwind_info'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 2511 "configure"
+#line 2533 "configure"
 static char __EH_FRAME_BEGIN__;
 _start ()
 {
@@ -2534,7 +2556,7 @@ __bzero () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame_info
 			    -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2538: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2560: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_dwarf2_unwind_info=static
 else
   libc_cv_gcc_dwarf2_unwind_info=no
@@ -2542,7 +2564,7 @@ fi
 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
   if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame
 			      -nostdlib -nostartfiles
-			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2546: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2568: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_gcc_dwarf2_unwind_info=yes
   else
     libc_cv_gcc_dwarf2_unwind_info=no
@@ -2616,7 +2638,7 @@ if test "$uname" = "sysdeps/generic"; then
   fi
 
   echo $ac_n "checking OS release for uname""... $ac_c" 1>&6
-echo "configure:2620: checking OS release for uname" >&5
+echo "configure:2642: checking OS release for uname" >&5
 if eval "test \"`echo '$''{'libc_cv_uname_release'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2638,7 +2660,7 @@ echo "$ac_t""$libc_cv_uname_release" 1>&6
   uname_release="$libc_cv_uname_release"
 
   echo $ac_n "checking OS version for uname""... $ac_c" 1>&6
-echo "configure:2642: checking OS version for uname" >&5
+echo "configure:2664: checking OS version for uname" >&5
 if eval "test \"`echo '$''{'libc_cv_uname_version'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2660,7 +2682,7 @@ else
 fi
 
 echo $ac_n "checking stdio selection""... $ac_c" 1>&6
-echo "configure:2664: checking stdio selection" >&5
+echo "configure:2686: checking stdio selection" >&5
 
 case $stdio in
 libio) cat >> confdefs.h <<\EOF
@@ -2672,7 +2694,7 @@ esac
 echo "$ac_t""$stdio" 1>&6
 
 echo $ac_n "checking ldap selection""... $ac_c" 1>&6
-echo "configure:2676: checking ldap selection" >&5
+echo "configure:2698: checking ldap selection" >&5
 
 case $add_ons in
 *ldap*)
@@ -2735,7 +2757,7 @@ if test $static = no && test $shared = yes; then
 fi
 
 echo $ac_n "checking whether -fPIC is default""... $ac_c" 1>&6
-echo "configure:2739: checking whether -fPIC is default" >&5
+echo "configure:2761: checking whether -fPIC is default" >&5
 if eval "test \"`echo '$''{'pic_default'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2930,6 +2952,7 @@ s%@CPP@%$CPP%g
 s%@AR@%$AR%g
 s%@RANLIB@%$RANLIB%g
 s%@MIG@%$MIG%g
+s%@SYSINCLUDES@%$SYSINCLUDES%g
 s%@libc_cv_ar_S@%$libc_cv_ar_S%g
 s%@BASH@%$BASH%g
 s%@libc_cv_have_bash2@%$libc_cv_have_bash2%g
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 36932bb5b6..2702404444 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -20,6 +20,7 @@
 /* This file defines some things that for the dynamic linker are defined in
    rtld.c and dl-sysdep.c in ways appropriate to bootstrap dynamic linking.  */
 
+#include <errno.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <elf/ldsodefs.h>
@@ -35,6 +36,7 @@ const char *_dl_rpath = DEFAULT_RPATH;
 /* Name of the architecture.  */
 const char *_dl_platform;
 size_t _dl_platformlen;
+
 int _dl_debug_libs;
 int _dl_debug_impcalls;
 int _dl_debug_bindings;
@@ -76,3 +78,22 @@ non_dynamic_init (void)
     _dl_platformlen = strlen (_dl_platform);
 }
 text_set_element (__libc_subinit, non_dynamic_init);
+
+const struct r_strlenpair *
+internal_function
+_dl_important_hwcaps (const char *platform, size_t platform_len, size_t *sz,
+		      size_t *max_capstrlen)
+{
+  struct r_strlenpair *result;
+
+  /* XXX We don't try to find the capabilities in this case.  */
+  result = (struct r_strlenpair *) malloc (sizeof (*result));
+  if (result == NULL)
+    _dl_signal_error (ENOMEM, NULL, "cannot create capability list");
+
+  result[0].str = (char *) result;	/* Does not really matter.  */
+  result[0].len = 0;
+
+  *sz = 1;
+  return result;
+}
diff --git a/iconv/gconv_simple.c b/iconv/gconv_simple.c
index 478c0dc8fe..6fe98a9065 100644
--- a/iconv/gconv_simple.c
+++ b/iconv/gconv_simple.c
@@ -134,8 +134,9 @@ __gconv_transform_ascii_ucs4 (struct gconv_step *step,
 		}
 
 	      /* It's an one byte sequence.  */
-	      *(wchar_t *) &data->outbuf[data->outbufavail++]
+	      *(wchar_t *) &data->outbuf[data->outbufavail]
 		= (wchar_t) *newinbuf;
+	      data->outbufavail += sizeof (wchar_t);
 	      ++actually;
 
 	      ++newinbuf;
@@ -252,12 +253,12 @@ __gconv_transform_ucs4_ascii (struct gconv_step *step,
 	      ++actually;
 
 	      ++newinbuf;
-	      ++cnt;
+	      cnt += sizeof (wchar_t);
 	    }
 
 	  /* Remember how much we converted.  */
-	  do_write += cnt;
-	  *inlen -= cnt * sizeof (wchar_t);
+	  do_write += cnt / sizeof (wchar_t);
+	  *inlen -= cnt;
 
 	  /* Check whether an illegal character appeared.  */
 	  if (result != GCONV_OK)
diff --git a/libio/fileops.c b/libio/fileops.c
index 15e30a43c8..0a6d009229 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -816,7 +816,7 @@ _IO_file_xsgetn (fp, data, n)
 	  /* If we now want less than a buffer, underflow and repeat
 	     the copy.  Otherwise, _IO_SYSREAD directly to
 	     the user buffer. */
-	  if (fp->_IO_buf_base && want <= fp->_IO_buf_end - fp->_IO_buf_base)
+	  if (fp->_IO_buf_base && want < fp->_IO_buf_end - fp->_IO_buf_base)
 	    {
 	      if (__underflow (fp) == EOF)
 		break;
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index e6c2df25d6..e13785f3a3 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -826,6 +826,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 	mbstate_t mbstate;						      \
 	size_t len;							      \
 									      \
+	memset (&mbstate, '\0', sizeof (mbstate_t));			      \
 	len = __wcrtomb (buf, (fspec == NULL ? va_arg (ap, wint_t)	      \
 			       : args_value[fspec->data_arg].pa_wchar),	      \
 			 &mbstate);					      \
@@ -880,6 +881,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 	    const wchar_t *s2 = (const wchar_t *) string;		      \
 	    mbstate_t mbstate;						      \
 									      \
+	    memset (&mbstate, '\0', sizeof (mbstate_t));		      \
 	    len = __wcsrtombs (NULL, &s2, 0, &mbstate);			      \
 	    if (len == (size_t) -1)					      \
 	      /* Illegal wide-character string.  */			      \
@@ -887,6 +889,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 									      \
 	    s2 = (const wchar_t *) string;				      \
 	    string = alloca (len + 1);					      \
+	    memset (&mbstate, '\0', sizeof (mbstate_t));		      \
 	    (void) __wcsrtombs (string, &s2, prec != -1 ? prec : UINT_MAX,    \
 				&mbstate);				      \
 	  }								      \
@@ -993,6 +996,9 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 #endif
   nspecs_done = 0;
 
+  /* Put state for processing format string in initial state.  */
+  memset (&mbstate, '\0', sizeof (mbstate_t));
+
   /* Find the first format specifier.  */
   f = lead_str_end = find_spec (format, &mbstate);
 
diff --git a/stdlib/strtod.c b/stdlib/strtod.c
index a06239d123..226b16ff5c 100644
--- a/stdlib/strtod.c
+++ b/stdlib/strtod.c
@@ -459,11 +459,9 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM)
       else
 	{
 	  /* Figure out the thousands separator character.  */
-#if defined _LIBC || defined _HAVE_BTOWC
 	  thousands = btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
 	  if (thousands == WEOF)
 	    thousands = L'\0';
-#endif
 	  if (thousands == L'\0')
 	    grouping = NULL;
 	}
@@ -472,9 +470,9 @@ INTERNAL (STRTOF) (nptr, endptr, group LOCALE_PARAM)
     grouping = NULL;
 
   /* Find the locale's decimal point character.  */
-  if (mbtowc ((wchar_t *) &decimal, _NL_CURRENT (LC_NUMERIC, DECIMAL_POINT),
-	      strlen (_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT))) <= 0)
-    decimal = (wchar_t) *_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT);
+  decimal = btowc (*_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT));
+  if (decimal == WEOF)
+    decimal = L'.';
   assert (decimal != L'\0');
 
   /* Prepare number representation.  */
diff --git a/wcsmbs/btowc.c b/wcsmbs/btowc.c
index 268b1f2378..b627324738 100644
--- a/wcsmbs/btowc.c
+++ b/wcsmbs/btowc.c
@@ -61,7 +61,8 @@ btowc (c)
 					     &data, inbuf, &inbytes,
 					     &converted, 0);
   /* The conversion failed.  */
-  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT)
+  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
+      && status != GCONV_EMPTY_INPUT)
     return WEOF;
 
   return *(wchar_t *)buf;
diff --git a/wcsmbs/mbrtowc.c b/wcsmbs/mbrtowc.c
index 99bc5a4797..5a52b1dde1 100644
--- a/wcsmbs/mbrtowc.c
+++ b/wcsmbs/mbrtowc.c
@@ -28,7 +28,6 @@
 # define EILSEQ EINVAL
 #endif
 
-
 /* This is the private state used if PS is NULL.  */
 static mbstate_t state;
 
@@ -69,12 +68,15 @@ __mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
      characters.  The output buffer must be large enough, otherwise the
      definition of MB_CUR_MAX is not correct.  All the other possible
      errors also must not happen.  */
-  assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
-	  || status == GCONV_INCOMPLETE_INPUT);
+  assert (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+	  || status == GCONV_ILLEGAL_INPUT
+	  || status == GCONV_INCOMPLETE_INPUT
+	  || status == GCONV_FULL_OUTPUT);
 
-  if (status == GCONV_OK)
+  if (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+      || status == GCONV_FULL_OUTPUT)
     {
-      if (*(wchar_t *)data.outbuf == L'\0')
+      if (data.outbufavail > 0 && *(wchar_t *)data.outbuf == L'\0')
 	{
 	  /* The converted character is the NUL character.  */
 	  assert (mbsinit (data.statep));
diff --git a/wcsmbs/mbsnrtowcs.c b/wcsmbs/mbsnrtowcs.c
index ded15e4299..9787e97661 100644
--- a/wcsmbs/mbsnrtowcs.c
+++ b/wcsmbs/mbsnrtowcs.c
@@ -84,7 +84,8 @@ __mbsnrtowcs (dst, src, nmc, len, ps)
 	}
       while (status == GCONV_FULL_OUTPUT);
 
-      if (status == GCONV_OK && ((wchar_t *) dst)[written - 1] == L'\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && buf[written - 1] == L'\0')
 	/* Don't count the NUL character in.  */
 	--result;
     }
@@ -105,7 +106,8 @@ __mbsnrtowcs (dst, src, nmc, len, ps)
 
       /* We have to determine whether the last character converted
 	 is the NUL character.  */
-      if (status == GCONV_OK && ((wchar_t *) dst)[result - 1] == L'\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && ((wchar_t *) dst)[result - 1] == L'\0')
 	{
 	  assert (result > 0);
 	  assert (mbsinit (data.statep));
@@ -118,10 +120,12 @@ __mbsnrtowcs (dst, src, nmc, len, ps)
 
   /* There must not be any problems with the conversion but illegal input
      characters.  */
-  assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
+  assert (status == GCONV_OK || status != GCONV_EMPTY_INPUT
+	  || status == GCONV_ILLEGAL_INPUT
 	  || status == GCONV_INCOMPLETE_INPUT || status == GCONV_FULL_OUTPUT);
 
-  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT)
+  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
+      && status != GCONV_EMPTY_INPUT)
     {
       result = (size_t) -1;
       __set_errno (EILSEQ);
diff --git a/wcsmbs/mbsrtowcs.c b/wcsmbs/mbsrtowcs.c
index d0af40fb54..0b5af9bab0 100644
--- a/wcsmbs/mbsrtowcs.c
+++ b/wcsmbs/mbsrtowcs.c
@@ -76,7 +76,8 @@ __mbsrtowcs (dst, src, len, ps)
 	}
       while (status == GCONV_FULL_OUTPUT);
 
-      if (status == GCONV_OK && ((wchar_t *) dst)[written - 1] == L'\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && buf[written - 1] == L'\0')
 	/* Don't count the NUL character in.  */
 	--result;
     }
@@ -98,7 +99,8 @@ __mbsrtowcs (dst, src, len, ps)
 
       /* We have to determine whether the last character converted
 	 is the NUL character.  */
-      if (status == GCONV_OK && ((wchar_t *) dst)[result - 1] == L'\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && ((wchar_t *) dst)[result - 1] == L'\0')
 	{
 	  assert (result > 0);
 	  assert (mbsinit (data.statep));
@@ -111,10 +113,12 @@ __mbsrtowcs (dst, src, len, ps)
 
   /* There must not be any problems with the conversion but illegal input
      characters.  */
-  assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
+  assert (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+	  || status == GCONV_ILLEGAL_INPUT
 	  || status == GCONV_INCOMPLETE_INPUT || status == GCONV_FULL_OUTPUT);
 
-  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT)
+  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
+      && status != GCONV_EMPTY_INPUT)
     {
       result = (size_t) -1;
       __set_errno (EILSEQ);
diff --git a/wcsmbs/wcrtomb.c b/wcsmbs/wcrtomb.c
index d45ae444bb..dcc2ef67cd 100644
--- a/wcsmbs/wcrtomb.c
+++ b/wcsmbs/wcrtomb.c
@@ -70,7 +70,7 @@ __wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
 						 &data, NULL, &inbytes,
 						 NULL, 1);
 
-      if (status == GCONV_OK)
+      if (status == GCONV_OK || status == GCONV_EMPTY_INPUT)
 	data.outbuf[data.outbufavail++] = '\0';
     }
   else
@@ -87,10 +87,13 @@ __wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
      characters.  The output buffer must be large enough, otherwise the
      definition of MB_CUR_MAX is not correct.  All the other possible
      errors also must not happen.  */
-  assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
-	  || status == GCONV_INCOMPLETE_INPUT);
+  assert (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+	  || status == GCONV_ILLEGAL_INPUT
+	  || status == GCONV_INCOMPLETE_INPUT
+	  || status == GCONV_FULL_OUTPUT);
 
-  if (status == GCONV_OK)
+  if (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+      || status == GCONV_FULL_OUTPUT)
     result = data.outbufavail;
   else
     {
diff --git a/wcsmbs/wcsnrtombs.c b/wcsmbs/wcsnrtombs.c
index 2dd9f7c17e..02770ce876 100644
--- a/wcsmbs/wcsnrtombs.c
+++ b/wcsmbs/wcsnrtombs.c
@@ -54,7 +54,7 @@ __wcsnrtombs (dst, src, nwc, len, ps)
 
   if (nwc == 0)
     return 0;
-  inbytes_in = __wcsnlen (*src, nwc - 1) + 1;
+  inbytes_in = (__wcsnlen (*src, nwc - 1) + 1) * sizeof (wchar_t);
 
   /* Make sure we use the correct function.  */
   update_conversion_ptrs ();
@@ -85,7 +85,8 @@ __wcsnrtombs (dst, src, nwc, len, ps)
 	}
       while (status == GCONV_FULL_OUTPUT);
 
-      if (status == GCONV_OK && dst[data.outbufavail - 1] == '\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && buf[data.outbufavail - 1] == '\0')
 	/* Don't count the NUL character in.  */
 	--result;
     }
@@ -106,7 +107,8 @@ __wcsnrtombs (dst, src, nwc, len, ps)
 
       /* We have to determine whether the last character converted
 	 is the NUL character.  */
-      if (status == GCONV_OK && dst[data.outbufavail - 1] == '\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && dst[data.outbufavail - 1] == '\0')
 	{
 	  assert (data.outbufavail > 0);
 	  assert (mbsinit (data.statep));
@@ -119,10 +121,12 @@ __wcsnrtombs (dst, src, nwc, len, ps)
 
   /* There must not be any problems with the conversion but illegal input
      characters.  */
-  assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
+  assert (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+	  || status == GCONV_ILLEGAL_INPUT
 	  || status == GCONV_INCOMPLETE_INPUT || status == GCONV_FULL_OUTPUT);
 
-  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT)
+  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
+      && status != GCONV_EMPTY_INPUT)
     {
       result = (size_t) -1;
       __set_errno (EILSEQ);
diff --git a/wcsmbs/wcsrtombs.c b/wcsmbs/wcsrtombs.c
index 35bb58e977..904a003840 100644
--- a/wcsmbs/wcsrtombs.c
+++ b/wcsmbs/wcsrtombs.c
@@ -55,7 +55,7 @@ __wcsrtombs (dst, src, len, ps)
   if (dst == NULL)
     {
       char buf[256];		/* Just an arbitrary value.  */
-      size_t inbytes_in = __wcslen (*src) + 1;
+      size_t inbytes_in = (__wcslen (*src) + 1) * sizeof (wchar_t);
       size_t inbytes = inbytes_in;
       const wchar_t *inbuf = *src;
       size_t written;
@@ -78,7 +78,8 @@ __wcsrtombs (dst, src, len, ps)
 	}
       while (status == GCONV_FULL_OUTPUT);
 
-      if (status == GCONV_OK && dst[data.outbufavail - 1] == '\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT)
+	  && buf[data.outbufavail - 1] == '\0')
 	/* Don't count the NUL character in.  */
 	--result;
     }
@@ -87,7 +88,8 @@ __wcsrtombs (dst, src, len, ps)
       /* This code is based on the safe assumption that all internal
 	 multi-byte encodings use the NUL byte only to mark the end
 	 of the string.  */
-      size_t inbytes_in = __wcsnlen (*src, len * MB_CUR_MAX) + 1;
+      size_t inbytes_in = ((__wcsnlen (*src, len * MB_CUR_MAX) + 1)
+			   * sizeof (wchar_t));
       size_t inbytes = inbytes_in;
 
       data.outbuf = dst;
@@ -100,7 +102,9 @@ __wcsrtombs (dst, src, len, ps)
 
       /* We have to determine whether the last character converted
 	 is the NUL character.  */
-      if (status == GCONV_OK && dst[data.outbufavail - 1] == '\0')
+      if ((status == GCONV_OK || status == GCONV_EMPTY_INPUT
+	   || status == GCONV_FULL_OUTPUT)
+	  && dst[data.outbufavail - 1] == '\0')
 	{
 	  assert (data.outbufavail > 0);
 	  assert (mbsinit (data.statep));
@@ -113,10 +117,12 @@ __wcsrtombs (dst, src, len, ps)
 
   /* There must not be any problems with the conversion but illegal input
      characters.  */
-  assert (status == GCONV_OK || status == GCONV_ILLEGAL_INPUT
+  assert (status == GCONV_OK || status == GCONV_EMPTY_INPUT
+	  || status == GCONV_ILLEGAL_INPUT
 	  || status == GCONV_INCOMPLETE_INPUT || status == GCONV_FULL_OUTPUT);
 
-  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT)
+  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
+      && status != GCONV_EMPTY_INPUT)
     {
       result = (size_t) -1;
       __set_errno (EILSEQ);
diff --git a/wcsmbs/wctob.c b/wcsmbs/wctob.c
index 0461877d32..e70b4e7fe6 100644
--- a/wcsmbs/wctob.c
+++ b/wcsmbs/wctob.c
@@ -56,9 +56,10 @@ wctob (c)
 					     (const char *) inbuf, &inbytes,
 					     &converted, 0);
   /* The conversion failed or the output is too long.  */
-  if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
+  if ((status != GCONV_OK && status != GCONV_FULL_OUTPUT
+       && status != GCONV_EMPTY_INPUT)
       || data.outbufavail != 1)
-    return WEOF;
+    return EOF;
 
   return buf[0];
 }