Update gnulib files.

13 files changed, 145 insertions, 9 deletions

diff --git a/gl/Makefile.am b/gl/Makefile.am
index 95489dd196..1c21e7d450 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -599,6 +599,29 @@ EXTRA_DIST += stdbool.in.h
 
 ## end   gnulib module stdbool
 
+## begin gnulib module stddef
+
+BUILT_SOURCES += $(STDDEF_H)
+
+# We need the following in order to create <stddef.h> when the system
+# doesn't have one that works with the given compiler.
+stddef.h: stddef.in.h
+	rm -f $@-t $@
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+	      -e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
+	      -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
+	      -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
+	      < $(srcdir)/stddef.in.h; \
+	} > $@-t
+	mv $@-t $@
+MOSTLYCLEANFILES += stddef.h stddef.h-t
+
+EXTRA_DIST += stddef.in.h
+
+## end   gnulib module stddef
+
 ## begin gnulib module stdint
 
 BUILT_SOURCES += $(STDINT_H)
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 88719afb8a..e471c1cae8 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -173,6 +173,7 @@ AC_SUBST([LTALLOCA])
   gl_TYPE_SOCKLEN_T
   gl_STDARG_H
   AM_STDBOOL_H
+  gl_STDDEF_H
   gl_STDINT_H
   gl_STDIO_H
   gl_STDLIB_H
@@ -417,6 +418,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/sockets.h
   lib/stdarg.in.h
   lib/stdbool.in.h
+  lib/stddef.in.h
   lib/stdint.in.h
   lib/stdio-impl.h
   lib/stdio-write.c
@@ -489,6 +491,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/sockpfaf.m4
   m4/stdarg.m4
   m4/stdbool.m4
+  m4/stddef_h.m4
   m4/stdint.m4
   m4/stdint_h.m4
   m4/stdio_h.m4
@@ -537,6 +540,7 @@ AC_DEFUN([gl_FILE_LIST], [
   tests/test-snprintf.c
   tests/test-sockets.c
   tests/test-stdbool.c
+  tests/test-stddef.c
   tests/test-stdint.c
   tests/test-stdio.c
   tests/test-stdlib.c
diff --git a/gl/m4/wchar.m4 b/gl/m4/wchar.m4
index 2e52a82acf..ce53a45cf5 100644
--- a/gl/m4/wchar.m4
+++ b/gl/m4/wchar.m4
@@ -7,7 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.
 
 dnl Written by Eric Blake.
 
-# wchar.m4 serial 23
+# wchar.m4 serial 25
 
 AC_DEFUN([gl_WCHAR_H],
 [
@@ -27,7 +27,10 @@ wchar_t w;]],
   fi
   AC_SUBST([HAVE_WINT_T])
 
-  if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes; then
+  dnl If <stddef.h> is replaced, then <wchar.h> must also be replaced.
+  AC_REQUIRE([gl_STDDEF_H])
+
+  if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes || test -n "$STDDEF_H"; then
     WCHAR_H=wchar.h
   fi
 
diff --git a/gl/stddef.in.h b/gl/stddef.in.h
new file mode 100644
index 0000000000..aff3b94c0f
--- /dev/null
+++ b/gl/stddef.in.h
@@ -0,0 +1,86 @@
+/* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
+
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Written by Eric Blake.  */
+
+/*
+ * POSIX 2008 <stddef.h> for platforms that have issues.
+ * <http://www.opengroup.org/susv3xbd/stddef.h.html>
+ */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+
+#if defined __need_wchar_t || defined __need_size_t  \
+  || defined __need_ptrdiff_t || defined __need_NULL \
+  || defined __need_wint_t
+/* Special invocation convention inside gcc header files.  In
+   particular, gcc provides a version of <stddef.h> that blindly
+   redefines NULL even when __need_wint_t was defined, even though
+   wint_t is not normally provided by <stddef.h>.  Hence, we must
+   remember if special invocation has ever been used to obtain wint_t,
+   in which case we need to clean up NULL yet again.  */
+
+# if !(defined _GL_STDDEF_H && defined _GL_STDDEF_WINT_T)
+#  ifdef __need_wint_t
+#   undef _GL_STDDEF_H
+#   define _GL_STDDEF_WINT_T
+#  endif
+#  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+# endif
+
+#else
+/* Normal invocation convention.  */
+
+# ifndef _GL_STDDEF_H
+
+/* The include_next requires a split double-inclusion guard.  */
+
+#  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+
+#  ifndef _GL_STDDEF_H
+#   define _GL_STDDEF_H
+
+/* On NetBSD 5.0, the definition of NULL lacks proper parentheses.  */
+#if @REPLACE_NULL@
+# undef NULL
+# ifdef __cplusplus
+   /* ISO C++ says that the macro NULL must expand to an integer constant
+      expression, hence '((void *) 0)' is not allowed in C++.  */
+#  if __GNUG__ >= 3
+    /* GNU C++ has a __null macro that behaves like an integer ('int' or
+       'long') but has the same size as a pointer.  Use that, to avoid
+       warnings.  */
+#   define NULL __null
+#  else
+#   define NULL 0L
+#  endif
+# else
+#  define NULL ((void *) 0)
+# endif
+#endif
+
+/* Some platforms lack wchar_t.  */
+#if !@HAVE_WCHAR_T@
+# define wchar_t int
+#endif
+
+#  endif /* _GL_STDDEF_H */
+# endif /* _GL_STDDEF_H */
+#endif /* __need_XXX */
diff --git a/gl/stdlib.in.h b/gl/stdlib.in.h
index f99767f600..c7c8e8fb7f 100644
--- a/gl/stdlib.in.h
+++ b/gl/stdlib.in.h
@@ -35,6 +35,8 @@
 #ifndef _GL_STDLIB_H
 #define _GL_STDLIB_H
 
+/* NetBSD 5.0 mis-defines NULL.  */
+#include <stddef.h>
 
 /* Solaris declares getloadavg() in <sys/loadavg.h>.  */
 #if @GNULIB_GETLOADAVG@ && @HAVE_SYS_LOADAVG_H@
diff --git a/gl/string.in.h b/gl/string.in.h
index 97da28fb77..079f2df5cf 100644
--- a/gl/string.in.h
+++ b/gl/string.in.h
@@ -28,6 +28,8 @@
 #ifndef _GL_STRING_H
 #define _GL_STRING_H
 
+/* NetBSD 5.0 mis-defines NULL.  */
+#include <stddef.h>
 
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
diff --git a/gl/tests/Makefile.am b/gl/tests/Makefile.am
index 4c3bcb5b9e..375c8bf7c6 100644
--- a/gl/tests/Makefile.am
+++ b/gl/tests/Makefile.am
@@ -244,6 +244,15 @@ EXTRA_DIST += test-stdbool.c
 
 ## end   gnulib module stdbool-tests
 
+## begin gnulib module stddef-tests
+
+TESTS += test-stddef
+check_PROGRAMS += test-stddef
+
+EXTRA_DIST += test-stddef.c
+
+## end   gnulib module stddef-tests
+
 ## begin gnulib module stdint-tests
 
 TESTS += test-stdint
diff --git a/gl/tests/test-stdio.c b/gl/tests/test-stdio.c
index 41299e2159..dcfe38dd51 100644
--- a/gl/tests/test-stdio.c
+++ b/gl/tests/test-stdio.c
@@ -27,7 +27,7 @@ int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
 
 /* Check that NULL can be passed through varargs as a pointer type,
    per POSIX 2008.  */
-verify (sizeof (NULL) == sizeof (void *));
+verify (sizeof NULL == sizeof (void *));
 
 int
 main ()
diff --git a/gl/tests/test-stdlib.c b/gl/tests/test-stdlib.c
index 711cfa6315..ae46ba1662 100644
--- a/gl/tests/test-stdlib.c
+++ b/gl/tests/test-stdlib.c
@@ -26,7 +26,7 @@ int exitcode;
 
 /* Check that NULL can be passed through varargs as a pointer type,
    per POSIX 2008.  */
-verify (sizeof (NULL) == sizeof (void *));
+verify (sizeof NULL == sizeof (void *));
 
 int
 main ()
diff --git a/gl/tests/test-string.c b/gl/tests/test-string.c
index 688d0d31c3..fe53cd9b15 100644
--- a/gl/tests/test-string.c
+++ b/gl/tests/test-string.c
@@ -24,7 +24,7 @@
 
 /* Check that NULL can be passed through varargs as a pointer type,
    per POSIX 2008.  */
-verify (sizeof (NULL) == sizeof (void *));
+verify (sizeof NULL == sizeof (void *));
 
 int
 main ()
diff --git a/gl/tests/test-unistd.c b/gl/tests/test-unistd.c
index e0b82918a9..129367b4d7 100644
--- a/gl/tests/test-unistd.c
+++ b/gl/tests/test-unistd.c
@@ -24,7 +24,7 @@
 
 /* Check that NULL can be passed through varargs as a pointer type,
    per POSIX 2008.  */
-verify (sizeof (NULL) == sizeof (void *));
+verify (sizeof NULL == sizeof (void *));
 
 /* Check that the various SEEK_* macros are defined.  */
 int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
diff --git a/gl/tests/test-wchar.c b/gl/tests/test-wchar.c
index 19da7d93c0..28660688d2 100644
--- a/gl/tests/test-wchar.c
+++ b/gl/tests/test-wchar.c
@@ -1,5 +1,5 @@
 /* Test of <wchar.h> substitute.
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2009 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -20,10 +20,16 @@
 
 #include <wchar.h>
 
+#include "verify.h"
+
 /* Check that the types wchar_t and wint_t are defined.  */
 wchar_t a = 'c';
 wint_t b = 'x';
 
+/* Check that NULL can be passed through varargs as a pointer type,
+   per POSIX 2008.  */
+verify (sizeof NULL == sizeof (void *));
+
 int
 main ()
 {
diff --git a/gl/unistd.in.h b/gl/unistd.in.h
index 578121e328..aada3643ef 100644
--- a/gl/unistd.in.h
+++ b/gl/unistd.in.h
@@ -29,6 +29,9 @@
 #ifndef _GL_UNISTD_H
 #define _GL_UNISTD_H
 
+/* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
+#include <stddef.h>
+
 /* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>.  */
 #if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
 # include <stdio.h>
@@ -375,7 +378,6 @@ extern int gethostname(char *name, size_t len);
    See <http://www.opengroup.org/susv3xsh/getlogin.html>.
  */
 # if !@HAVE_DECL_GETLOGIN_R@
-#  include <stddef.h>
 extern int getlogin_r (char *name, size_t size);
 # endif
 #elif defined GNULIB_POSIXCHECK
@@ -536,7 +538,6 @@ extern int link (const char *path1, const char *path2);
    See the POSIX:2001 specification
    <http://www.opengroup.org/susv3xsh/readlink.html>.  */
 # if !@HAVE_READLINK@
-#  include <stddef.h>
 extern int readlink (const char *file, char *buf, size_t bufsize);
 # endif
 #elif defined GNULIB_POSIXCHECK