[sgen] Add an assertion.

diff --git a/mono/sgen/sgen-gc.c b/mono/sgen/sgen-gc.c
index 41843b19cc788f351ee7fd94c3ca211b16db227b..aaddedfb5ca63517c5731d2779568ce0818f3aed 100644 (file)
--- a/mono/sgen/sgen-gc.c
+++ b/mono/sgen/sgen-gc.c
@@ -727,6 +727,8 @@ pin_objects_in_nursery (gboolean do_scan_objects, ScanCopyContext ctx)
 void
 sgen_pin_object (GCObject *object, GrayQueue *queue)
 {
+       SGEN_ASSERT (0, sgen_ptr_in_nursery (object), "We're only supposed to use this for pinning nursery objects when out of memory.");
+
        /*
         * All pinned objects are assumed to have been staged, so we need to stage as well.
         * Also, the count of staged objects shows that "late pinning" happened.