[oe] glib-2.0_2.22.1 breaks build of mc

[David Kozub]

Hello,

I bumped into an issue with glib-2.0_2.22.1. (dev branch, 
MACHINE=omapzoom2, DISTRO=angstrom-2008.1)

The library itself builds ok, but then when building midnight commander, 
do_compile choes, with the error being:

In file included from 
/mnt/data/zoom2/OE/tmp/staging/armv7a-angstrom-linux-gnueabi/usr/include/glib-2.0/glib/gasyncqueue.h:34,
                  from 
/mnt/data/zoom2/OE/tmp/staging/armv7a-angstrom-linux-gnueabi/usr/include/glib-2.0/glib.h:34,
                  from glibcompat.c:29:
/mnt/data/zoom2/OE/tmp/staging/armv7a-angstrom-linux-gnueabi/usr/include/glib-2.0/glib/gthread.h: 
In function 'g_once_init_enter':
/mnt/data/zoom2/OE/tmp/staging/armv7a-angstrom-linux-gnueabi/usr/include/glib-2.0/glib/gthread.h:344: 
error: size of array 'type name' is negative

The error message still leaves me in the dark as for what actually 
happened. Anyway, the function in question looks like this:

G_INLINE_FUNC gboolean
g_once_init_enter (volatile gsize *value_location)
{
   if G_LIKELY ((gpointer) g_atomic_pointer_get (value_location) != NULL)
     return FALSE;
   else
     return g_once_init_enter_impl (value_location);
}

(line 344 is the g_atomic_pointer_get() call)

Changing the argument of g_atomic_pointer_get into:

 	(volatile gpointer *)value_location

seems to resolve the issue, but seeing the code for the first time - I 
wonder if it's ok.

Anyway I did some digging arount the glib headers, and I think the 
typecast is ok (as sizeof(gsize)==sizeof(gpointer), and that's hopefully 
garanteed).

The trivial patch is here:

http://linux.fjfi.cvut.cz/~zub/g_once_init_enter.patch

David