From 1425aa664d5efa56d9e2cc29f8aa1292463e1f5a Mon Sep 17 00:00:00 2001
From: Simon McVittie <simon.mcvittie@collabora.co.uk>
Date: Tue, 6 Dec 2011 11:35:02 +0000
Subject: [PATCH] GBitLock: turn assumptions of g_futex_int_address into a
 static assertion

We'll probably never encounter a platform where these fail, but that's
what static assertions are for...

https://bugzilla.gnome.org/show_bug.cgi?id=548954
---
 glib/gbitlock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/glib/gbitlock.c b/glib/gbitlock.c
index 7674f9a31..7b879be21 100644
--- a/glib/gbitlock.c
+++ b/glib/gbitlock.c
@@ -366,6 +366,12 @@ g_futex_int_address (const volatile void *address)
 {
   const volatile gint *int_address = address;
 
+  /* this implementation makes these (reasonable) assumptions: */
+  G_STATIC_ASSERT (G_BYTE_ORDER == G_LITTLE_ENDIAN ||
+      (G_BYTE_ORDER == G_BIG_ENDIAN &&
+       sizeof (int) == 4 &&
+       (sizeof (gpointer) == 4 || sizeof (gpointer) == 8)));
+
 #if G_BYTE_ORDER == G_BIG_ENDIAN && GLIB_SIZEOF_VOID_P == 8
   int_address++;
 #endif