From be15a60bdae4fe9d0cf8945fa8dd43e888918537 Mon Sep 17 00:00:00 2001
From: Jason Crain <jason@inspiresomeone.us>
Date: Tue, 26 Nov 2019 22:33:03 -0700
Subject: [PATCH] gthread: Fix "zero as null pointer" warning

When compiling a program using glib with -Wzero-as-null-pointer-constant
warnings enabled, the compiler warns about this type check in the
g_once_init_enter macro. Fix by replacing "0" with "NULL".
---
 glib/gthread.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/glib/gthread.h b/glib/gthread.h
index c8761c5e6..375771ad4 100644
--- a/glib/gthread.h
+++ b/glib/gthread.h
@@ -247,7 +247,7 @@ void            g_once_init_leave               (volatile void  *location,
 # define g_once_init_enter(location) \
   (G_GNUC_EXTENSION ({                                               \
     G_STATIC_ASSERT (sizeof *(location) == sizeof (gpointer));       \
-    (void) (0 ? (gpointer) *(location) : 0);                         \
+    (void) (0 ? (gpointer) *(location) : NULL);                      \
     (!g_atomic_pointer_get (location) &&                             \
      g_once_init_enter (location));                                  \
   }))