>From 4c37dd4ab504ba644fbcfdb47375398bf0d97b4f Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sun, 23 Feb 2020 12:32:25 +0100
Subject: [PATCH 14/29] system-quote: Use 'restrict'.

* lib/system-quote.h (system_quote_copy): Use 'restrict'.
* modules/system-quote (configure.ac): Require AC_C_RESTRICT.
---
 ChangeLog            | 4 ++++
 lib/system-quote.h   | 2 +-
 modules/system-quote | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index a00c415..525ecdb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2020-02-23  Bruno Haible  <address@hidden>
 
+	system-quote: Use 'restrict'.
+	* lib/system-quote.h (system_quote_copy): Use 'restrict'.
+	* modules/system-quote (configure.ac): Require AC_C_RESTRICT.
+
 	sh-quote: Use 'restrict'.
 	* lib/sh-quote.h (shell_quote_copy): Use 'restrict'.
 	* modules/sh-quote (configure.ac): Require AC_C_RESTRICT.
diff --git a/lib/system-quote.h b/lib/system-quote.h
index d31d47f..419d3b8 100644
--- a/lib/system-quote.h
+++ b/lib/system-quote.h
@@ -77,7 +77,7 @@ extern size_t
 /* Copies the quoted string to p and returns the incremented p.
    There must be room for system_quote_length (string) + 1 bytes at p.  */
 extern char *
-       system_quote_copy (char *p,
+       system_quote_copy (char *restrict p,
                           enum system_command_interpreter interpreter,
                           const char *string);
 
diff --git a/modules/system-quote b/modules/system-quote
index f34d58a..9af74dc 100644
--- a/modules/system-quote
+++ b/modules/system-quote
@@ -10,6 +10,7 @@ sh-quote
 xalloc
 
 configure.ac:
+AC_REQUIRE([AC_C_RESTRICT])
 
 Makefile.am:
 lib_SOURCES += system-quote.h system-quote.c
-- 
2.7.4