Update from Gnulib

This incorporates:
2020-05-09 stdio: don't redefine _GL_ATTRIBUTE_FORMAT
2020-05-09 dirent, stdlib, string: don't redefine _GL_ATTRIBUTE_PURE
2020-05-08 limits-h: define LONG_BIT correctly on Haiku/x86_64
2020-05-08 ignore-value tests: use module 'attribute'
2020-05-06 attribute: minor style fixes
* build-aux/config.sub, doc/misc/texinfo.tex, lib/attribute.h:
* lib/dirent.in.h, lib/limits.in.h, lib/stdio.in.h, lib/stdlib.in.h:
* lib/string.in.h, m4/gnulib-common.m4:
Copy from Gnulib.

1 files changed, 5 insertions, 5 deletions

diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index b0010d0e351..f4ba5e3a00d 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 49
+# gnulib-common.m4 serial 50
 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -96,7 +96,7 @@ AC_DEFUN([gl_COMMON_BODY], [
 # define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
 # define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
 # define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
-# define _GL_ATTR_warn_unused_result_GL_GNUC_PREREQ (3, 4)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
 #endif
 
 ]dnl There is no _GL_ATTRIBUTE_ALIGNED; use stdalign's _Alignas instead.
@@ -122,7 +122,7 @@ AC_DEFUN([gl_COMMON_BODY], [
 /* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
    <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>. */
 #if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
-# define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
 #else
 # define _GL_ATTRIBUTE_COLD
 #endif
@@ -142,8 +142,8 @@ AC_DEFUN([gl_COMMON_BODY], [
 #endif
 
 #if _GL_HAS_ATTRIBUTE (error)
-# define _GL_ATTRIBUTE_ERROR(msg) __attribute__((__error__ (msg)))
-# define _GL_ATTRIBUTE_WARNING(msg) __attribute__((__warning__ (msg)))
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
 #else
 # define _GL_ATTRIBUTE_ERROR(msg)
 # define _GL_ATTRIBUTE_WARNING(msg)