From 78f5fbf491b6f12a67a633f919ec24f97570a733 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sun, 21 Dec 2008 04:53:17 +0100
Subject: [PATCH] Override mbsrtowcs when redefining mbstate_t.

---
 ChangeLog       | 6 ++++++
 lib/wchar.in.h  | 6 +++++-
 m4/mbsrtowcs.m4 | 8 +++++++-
 m4/wchar.m4     | 3 ++-
 modules/wchar   | 1 +
 5 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 972a94071f..5670e7647d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2008-12-20  Bruno Haible  <bruno@clisp.org>
 
+	* lib/wchar.in.h (mbsrtowcs): Redefine if REPLACE_MBSRTOWCS is set.
+	* m4/mbsrtowcs.m4 (gl_FUNC_MBSRTOWCS): Invoke gl_MBSTATE_T_BROKEN. Set
+	REPLACE_MBSRTOWCS if mbsrtowcs needs to be overridden.
+	* m4/wchar.m4 (gl_WCHAR_H_DEFAULTS): Initialize REPLACE_MBSRTOWCS.
+	* modules/wchar (Makefile.am): Substitute REPLACE_MBSRTOWCS.
+
 	Work around mbrtowc bugs on AIX, HP-UX, OSF/1, Solaris.
 	* lib/wchar.in.h (mbstate_t): Redefine also if REPLACE_MBSTATE_T is
 	set.
diff --git a/lib/wchar.in.h b/lib/wchar.in.h
index 62844af72b..c4269664cd 100644
--- a/lib/wchar.in.h
+++ b/lib/wchar.in.h
@@ -167,7 +167,11 @@ extern size_t mbrlen (const char *s, size_t n, mbstate_t *ps);
 
 /* Convert a string to a wide string.  */
 #if @GNULIB_MBSRTOWCS@
-# if !@HAVE_MBSRTOWCS@
+# if @REPLACE_MBSRTOWCS@
+#  undef mbsrtowcs
+#  define mbsrtowcs rpl_mbsrtowcs
+# endif
+# if !@HAVE_MBSRTOWCS@ || @REPLACE_MBSRTOWCS@
 extern size_t mbsrtowcs (wchar_t *dest, const char **srcp, size_t len, mbstate_t *ps);
 # endif
 #elif defined GNULIB_POSIXCHECK
diff --git a/m4/mbsrtowcs.m4 b/m4/mbsrtowcs.m4
index 004e500b30..58ae2c683c 100644
--- a/m4/mbsrtowcs.m4
+++ b/m4/mbsrtowcs.m4
@@ -1,4 +1,4 @@
-# mbsrtowcs.m4 serial 1
+# mbsrtowcs.m4 serial 2
 dnl Copyright (C) 2008 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,9 +9,15 @@ AC_DEFUN([gl_FUNC_MBSRTOWCS],
   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
 
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
+  gl_MBSTATE_T_BROKEN
+  if test $REPLACE_MBSTATE_T = 1; then
+    REPLACE_MBSRTOWCS=1
+  fi
   AC_CHECK_FUNCS_ONCE([mbsrtowcs])
   if test $ac_cv_func_mbsrtowcs = no; then
     HAVE_MBSRTOWCS=0
+  fi
+  if test $HAVE_MBSRTOWCS = 0 || test $REPLACE_MBSRTOWCS = 1; then
     gl_REPLACE_WCHAR_H
     AC_LIBOBJ([mbsrtowcs])
     gl_PREREQ_MBSRTOWCS
diff --git a/m4/wchar.m4 b/m4/wchar.m4
index 0809b3c790..6e0fe01886 100644
--- a/m4/wchar.m4
+++ b/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 14
+# wchar.m4 serial 15
 
 AC_DEFUN([gl_WCHAR_H],
 [
@@ -80,6 +80,7 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   REPLACE_WCTOB=0;     AC_SUBST([REPLACE_WCTOB])
   REPLACE_MBSINIT=0;   AC_SUBST([REPLACE_MBSINIT])
   REPLACE_MBRTOWC=0;   AC_SUBST([REPLACE_MBRTOWC])
+  REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS])
   REPLACE_WCWIDTH=0;   AC_SUBST([REPLACE_WCWIDTH])
   WCHAR_H='';          AC_SUBST([WCHAR_H])
 ])
diff --git a/modules/wchar b/modules/wchar
index 716e7f2802..fcef30e69a 100644
--- a/modules/wchar
+++ b/modules/wchar
@@ -44,6 +44,7 @@ wchar.h: wchar.in.h
 	      -e 's|@''REPLACE_WCTOB''@|$(REPLACE_WCTOB)|g' \
 	      -e 's|@''REPLACE_MBSINIT''@|$(REPLACE_MBSINIT)|g' \
 	      -e 's|@''REPLACE_MBRTOWC''@|$(REPLACE_MBRTOWC)|g' \
+	      -e 's|@''REPLACE_MBSRTOWCS''@|$(REPLACE_MBSRTOWCS)|g' \
 	      -e 's|@''REPLACE_WCWIDTH''@|$(REPLACE_WCWIDTH)|g' \
 	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
 	    < $(srcdir)/wchar.in.h; \
-- 
2.30.2