gnulib: update to bd11400942d6

Update the gnulib import to fixes these issues:

  - GDB build with clang + glibc < 2.33.

      https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=d6a07b4dc21b3118727743142c678858df442853
      https://lists.gnu.org/archive/html/bug-gnulib/2022-04/msg00072.html

    With glibc < 2.33, gnulib (since relatively recently) enables a
    replacement for free (see gnulib/import/m4/free.m4).  In that path,
    clang shows this error:

        make[2]: Entering directory '/home/smarchi/build/binutils-gdb-clang/gdbsupport'
          CXX      agent.o
        In file included from /home/smarchi/src/binutils-gdb/gdbsupport/agent.cc:20:
        In file included from /home/smarchi/src/binutils-gdb/gdbsupport/common-defs.h:95:
        ../gnulib/import/string.h:636:19: error: exception specification in declaration does not match previous declaration
        _GL_EXTERN_C void free (void *) throw ();
                          ^
        ../gnulib/import/stdlib.h:737:17: note: expanded from macro 'free'
        #   define free rpl_free
                        ^
        ../gnulib/import/stdlib.h:739:1: note: previous declaration is here
        _GL_FUNCDECL_RPL (free, void, (void *ptr));
        ^
        ../gnulib/import/sys/select.h:251:23: note: expanded from macro '_GL_FUNCDECL_RPL'
          _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
                              ^
        <scratch space>:139:1: note: expanded from here
        rpl_free
        ^

    The gnulib commit mentioned fixes the exception specification of `free`.

 - GDB build on RHEL 7:

      CC       libgnu_a-openat-proc.o
    In file included from /usr/include/string.h:633,
                     from ./string.h:41,
                     from ../../../binutils-gdb/gnulib/import/openat-proc.c:30:
    ./string.h:1105:1: error: expected identifier or '(' before '__extension__'
     1105 | _GL_FUNCDECL_SYS (strndup, char *,
          | ^~~~~~~~~~~~~~~~

     https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=84863a1c4dc8cca8fb0f6f670f67779cdd2d543b
     https://lists.gnu.org/archive/html/bug-gnulib/2022-04/msg00075.html

Change-Id: Ibd51302feece6f385d0c53e0d08921b5d95e2776

6 files changed, 19 insertions, 7 deletions

diff --git a/gnulib/import/glob.c b/gnulib/import/glob.c
index f6993a3..57cb3bd 100644
--- a/gnulib/import/glob.c
+++ b/gnulib/import/glob.c
@@ -1357,7 +1357,8 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
         }
       else
         {
-          int dfd = dirfd (stream);
+          DIR *dirp = stream;
+          int dfd = dirfd (dirp);
           int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
                            | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0));
           flags |= GLOB_MAGCHAR;
diff --git a/gnulib/import/m4/glob.m4 b/gnulib/import/m4/glob.m4
index cf5f939..f59b84f 100644
--- a/gnulib/import/m4/glob.m4
+++ b/gnulib/import/m4/glob.m4
@@ -1,4 +1,4 @@
-# glob.m4 serial 25
+# glob.m4 serial 26
 dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -70,7 +70,7 @@ char a[_GNU_GLOB_INTERFACE_VERSION == 1 || _GNU_GLOB_INTERFACE_VERSION == 2 ? 1
       AC_CACHE_CHECK([whether glob NOTDIR*/ omits symlink to nondir],
                      [gl_cv_glob_omit_nondir_symlinks],
         [if test $cross_compiling != yes; then
-           if ln -s conf-file conf$$-globtest 2>/dev/null && touch conf-file
+           if ln -s conf$$-file conf$$-globtest 2>/dev/null && touch conf$$-file
            then
              gl_cv_glob_omit_nondir_symlinks=maybe
            else
@@ -94,7 +94,7 @@ char a[_GNU_GLOB_INTERFACE_VERSION == 1 || _GNU_GLOB_INTERFACE_VERSION == 2 ? 1
                 :
                ])
            fi
-           rm -f conf$$-globtest
+           rm -f conf$$-file conf$$-globtest
          else
            gl_cv_glob_omit_nondir_symlinks="$gl_cross_guess_normal"
          fi
diff --git a/gnulib/import/m4/gnulib-common.m4 b/gnulib/import/m4/gnulib-common.m4
index c5ced04..30911d1 100644
--- a/gnulib/import/m4/gnulib-common.m4
+++ b/gnulib/import/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 72
+# gnulib-common.m4 serial 73
 dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -106,6 +106,10 @@ AC_DEFUN([gl_COMMON_BODY], [
 #endif
 
 #ifdef __has_c_attribute
+# if ((defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710 \
+      && _GL_GNUC_PREREQ (4, 6))
+#  pragma GCC diagnostic ignored "-Wpedantic"
+# endif
 # define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__)
 #else
 # define _GL_HAS_C_ATTRIBUTE(attr) 0
diff --git a/gnulib/import/stdlib.in.h b/gnulib/import/stdlib.in.h
index d52c2f7..a86643c 100644
--- a/gnulib/import/stdlib.in.h
+++ b/gnulib/import/stdlib.in.h
@@ -184,7 +184,11 @@ _GL_WARN_ON_USE (_Exit, "_Exit is unportable - "
 #   undef free
 #   define free rpl_free
 #  endif
+#  if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2)
+_GL_FUNCDECL_RPL (free, void, (void *ptr) throw ());
+#  else
 _GL_FUNCDECL_RPL (free, void, (void *ptr));
+#  endif
 _GL_CXXALIAS_RPL (free, void, (void *ptr));
 # else
 _GL_CXXALIAS_SYS (free, void, (void *ptr));
diff --git a/gnulib/import/string.in.h b/gnulib/import/string.in.h
index b6840fa..33160b2 100644
--- a/gnulib/import/string.in.h
+++ b/gnulib/import/string.in.h
@@ -583,7 +583,7 @@ _GL_FUNCDECL_RPL (strndup, char *,
                   _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
 _GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
 # else
-#  if !@HAVE_DECL_STRNDUP@ || __GNUC__ >= 11
+#  if !@HAVE_DECL_STRNDUP@ || (__GNUC__ >= 11 && !defined strndup)
 _GL_FUNCDECL_SYS (strndup, char *,
                   (char const *__s, size_t __n)
                   _GL_ARG_NONNULL ((1))
@@ -593,7 +593,7 @@ _GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n));
 # endif
 _GL_CXXALIASWARN (strndup);
 #else
-# if __GNUC__ >= 11
+# if __GNUC__ >= 11 && !defined strndup
 /* For -Wmismatched-dealloc: Associate strndup with free or rpl_free.  */
 _GL_FUNCDECL_SYS (strndup, char *,
                   (char const *__s, size_t __n)
diff --git a/gnulib/import/verify.h b/gnulib/import/verify.h
index c2d2a56..c5c63ae 100644
--- a/gnulib/import/verify.h
+++ b/gnulib/import/verify.h
@@ -215,6 +215,9 @@ template <int w>
 # define _GL_VERIFY(R, DIAGNOSTIC, ...)                                \
     extern int (*_GL_GENSYM (_gl_verify_function) (void))	       \
       [_GL_VERIFY_TRUE (R, DIAGNOSTIC)]
+# if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+#  pragma GCC diagnostic ignored "-Wnested-externs"
+# endif
 #endif
 
 /* _GL_STATIC_ASSERT_H is defined if this code is copied into assert.h.  */