master 06c1eea173: Update from gnulib

[Paul Eggert]

branch: master
commit 06c1eea1738fd829e9b4ac637156ad6b09aab7c3
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Update from gnulib
---
 build-aux/config.guess | 27 +++++++++++++++++++--------
 lib/gnulib.mk.in       |  1 -
 m4/manywarnings.m4     |  2 ++
 3 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/build-aux/config.guess b/build-aux/config.guess
index 7f76b6228f..160ecf0951 100755
--- a/build-aux/config.guess
+++ b/build-aux/config.guess
@@ -4,7 +4,7 @@
 
 # shellcheck disable=SC2006,SC2268 # see below for rationale
 
-timestamp='2022-01-09'
+timestamp='2022-05-08'
 
 # 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
@@ -1151,16 +1151,27 @@ EOF
        ;;
     x86_64:Linux:*:*)
        set_cc_for_build
+       CPU=$UNAME_MACHINE
        LIBCABI=$LIBC
        if test "$CC_FOR_BUILD" != no_compiler_found; then
-           if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
-               (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
-               grep IS_X32 >/dev/null
-           then
-               LIBCABI=${LIBC}x32
-           fi
+           ABI=64
+           sed 's/^        //' << EOF > "$dummy.c"
+           #ifdef __i386__
+           ABI=x86
+           #else
+           #ifdef __ILP32__
+           ABI=x32
+           #endif
+           #endif
+EOF
+           cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | 
sed 's, ,,g'`
+           eval "$cc_set_abi"
+           case $ABI in
+               x86) CPU=i686 ;;
+               x32) LIBCABI=${LIBC}x32 ;;
+           esac
        fi
-       GUESS=$UNAME_MACHINE-pc-linux-$LIBCABI
+       GUESS=$CPU-pc-linux-$LIBCABI
        ;;
     xtensa*:Linux:*:*)
        GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
diff --git a/lib/gnulib.mk.in b/lib/gnulib.mk.in
index bbb05fdba5..bf0df878a5 100644
--- a/lib/gnulib.mk.in
+++ b/lib/gnulib.mk.in
@@ -208,7 +208,6 @@ CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CRYPTOLIB = @CRYPTOLIB@
 CXX = @CXX@
-CXXCPP = @CXXCPP@
 CXXFLAGS = @CXXFLAGS@
 CYGWIN_OBJ = @CYGWIN_OBJ@
 C_SWITCH_MACHINE = @C_SWITCH_MACHINE@
diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4
index 253393e51b..f4b5853f02 100644
--- a/m4/manywarnings.m4
+++ b/m4/manywarnings.m4
@@ -167,11 +167,13 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC(C)],
   # them here so that the above 'comm' command doesn't report a false match.
   gl_AS_VAR_APPEND([$1], [' -Warray-bounds=2'])
   gl_AS_VAR_APPEND([$1], [' -Wattribute-alias=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wbidi-chars=any,ucn'])
   gl_AS_VAR_APPEND([$1], [' -Wformat-overflow=2'])
   gl_AS_VAR_APPEND([$1], [' -Wformat=2'])
   gl_AS_VAR_APPEND([$1], [' -Wformat-truncation=2'])
   gl_AS_VAR_APPEND([$1], [' -Wimplicit-fallthrough=5'])
   gl_AS_VAR_APPEND([$1], [' -Wshift-overflow=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wuse-after-free=3'])
   gl_AS_VAR_APPEND([$1], [' -Wunused-const-variable=2'])
   gl_AS_VAR_APPEND([$1], [' -Wvla-larger-than=4031'])