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-rw-r--r--lib/gettext.h21
1 files changed, 15 insertions, 6 deletions
diff --git a/lib/gettext.h b/lib/gettext.h
index da14fdcde..dd05cdaa5 100644
--- a/lib/gettext.h
+++ b/lib/gettext.h
@@ -1,5 +1,5 @@
/* Convenience header for conditional use of GNU <libintl.h>.
- Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2017 Free Software
+ Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2021 Free Software
Foundation, Inc.
This program is free software; you can redistribute it and/or modify
@@ -13,13 +13,14 @@
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, see <http://www.gnu.org/licenses/>. */
+ with this program; if not, see <https://www.gnu.org/licenses/>. */
#ifndef _LIBGETTEXT_H
#define _LIBGETTEXT_H 1
-/* NLS can be disabled through the configure --disable-nls option. */
-#if ENABLE_NLS
+/* NLS can be disabled through the configure --disable-nls option
+ or through "#define ENABLE NLS 0" before including this file. */
+#if defined ENABLE_NLS && ENABLE_NLS
/* Get declarations of GNU message catalog functions. */
# include <libintl.h>
@@ -183,8 +184,16 @@ npgettext_aux (const char *domain,
#include <string.h>
-#if (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
- /* || __STDC_VERSION__ >= 199901L */ )
+/* GNULIB_NO_VLA can be defined to disable use of VLAs even if supported.
+ This relates to the -Wvla and -Wvla-larger-than warnings, enabled in
+ the default GCC many warnings set. This allows programs to disable use
+ of VLAs, which may be unintended, or may be awkward to support portably,
+ or may have security implications due to non-deterministic stack usage. */
+
+#if (!defined GNULIB_NO_VLA \
+ && (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
+ /* || (__STDC_VERSION__ == 199901L && !defined __HP_cc)
+ || (__STDC_VERSION__ >= 201112L && !defined __STDC_NO_VLA__) */ ))
# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
#else
# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0