# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1229562194 -3600
# Node ID c6a367263f5227f1449eb505e48557ac7adc2ff0
# Parent  45e1c3577b496f823c66d71fdcf291aaddab778e
Verify an assumption.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-12-17  Bruno Haible  <bruno@clisp.org>
+
+	* lib/mbsinit.c: Include verify.h. Verify an assumption.
+	* modules/mbsinit (Depends-on): Add verify.
+	Suggested by Paul Eggert.
+
 2008-12-17  Bruno Haible  <bruno@clisp.org>
 
 	* m4/mbrtowc.m4 (AC_FUNC_MBRTOWC): Renamed from gl_FUNC_MBRTOWC.
diff --git a/lib/mbsinit.c b/lib/mbsinit.c
--- a/lib/mbsinit.c
+++ b/lib/mbsinit.c
@@ -20,6 +20,8 @@
 /* Specification.  */
 #include <wchar.h>
 
+#include "verify.h"
+
 /* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs()
    and wcrtomb(), wcsrtombs().
    We assume that
@@ -34,6 +36,8 @@
      - In wc -> mb direction, mbstate_t contains no information. In other
        words, it is always in the initial state.  */
 
+verify (sizeof (mbstate_t) >= 4);
+
 int
 mbsinit (const mbstate_t *ps)
 {
diff --git a/modules/mbsinit b/modules/mbsinit
--- a/modules/mbsinit
+++ b/modules/mbsinit
@@ -8,6 +8,7 @@
 
 Depends-on:
 wchar
+verify
 
 configure.ac:
 gl_FUNC_MBSINIT