>From 0423ac9fe82acd56e3b4108738cb3426c6216d6e Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sun, 23 Feb 2020 12:33:37 +0100
Subject: [PATCH 15/29] regex-quote: Use 'restrict'.

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

diff --git a/ChangeLog b/ChangeLog
index 525ecdb..7f4db6a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2020-02-23  Bruno Haible  <address@hidden>
 
+	regex-quote: Use 'restrict'.
+	* lib/regex-quote.h (regex_quote_copy): Use 'restrict'.
+	* modules/regex-quote (configure.ac): Require AC_C_RESTRICT.
+
 	system-quote: Use 'restrict'.
 	* lib/system-quote.h (system_quote_copy): Use 'restrict'.
 	* modules/system-quote (configure.ac): Require AC_C_RESTRICT.
diff --git a/lib/regex-quote.h b/lib/regex-quote.h
index 185f9fe..b6b299f 100644
--- a/lib/regex-quote.h
+++ b/lib/regex-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 regex_quote_length (string, spec) + 1 bytes at p.  */
 extern char *
-       regex_quote_copy (char *p,
+       regex_quote_copy (char *restrict p,
                          const char *string, const struct regex_quote_spec *spec);
 
 /* Returns the freshly allocated quoted string.  */
diff --git a/modules/regex-quote b/modules/regex-quote
index 9b67ca2..4623339 100644
--- a/modules/regex-quote
+++ b/modules/regex-quote
@@ -11,6 +11,7 @@ xalloc
 mbuiter
 
 configure.ac:
+AC_REQUIRE([AC_C_RESTRICT])
 
 Makefile.am:
 lib_SOURCES += regex-quote.c
-- 
2.7.4