From a37e672739197b8a7f3bdfe3f17099fe402f9a98 Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Fri, 30 Jun 2017 12:11:14 -0400
Subject: [PATCH] macros: Add a size check for hashtable iters

If the user provides a less than pointer-sized type, we'll clobber other things
on the stack.

See https://github.com/ostreedev/ostree/pull/990/
---
 glnx-macros.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/glnx-macros.h b/glnx-macros.h
index 24705afd8..1d4e1753e 100644
--- a/glnx-macros.h
+++ b/glnx-macros.h
@@ -120,6 +120,8 @@ G_BEGIN_DECLS
 
 #define _GLNX_HASH_TABLE_FOREACH_IMPL_KV(guard, ht, it, kt, k, vt, v)          \
     gboolean guard = TRUE;                                                     \
+    G_STATIC_ASSERT (sizeof (kt) == sizeof (void*));                           \
+    G_STATIC_ASSERT (sizeof (vt) == sizeof (void*));                           \
     for (GHashTableIter it;                                                    \
          guard && ({ g_hash_table_iter_init (&it, ht), TRUE; });               \
          guard = FALSE)                                                        \
-- 
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