Eliminate 'deref-of-null' static analyzer warning in register_finalizer

* finalize.c (GC_register_finalizer_inner): Add GC_ASSERT that fn and
hhdr are non-NULL (instead of specifying this in a comment) if new_fo
is non-NULL (new_fo is returned by GC_oom_fn).

diff --git a/finalize.c b/finalize.c
index 8b3afa0..514e42d 100644 (file)
--- a/finalize.c
+++ b/finalize.c
@@ -700,7 +700,8 @@ STATIC void GC_register_finalizer_inner(void * obj,
         curr_fo = fo_next(curr_fo);
       }
       if (EXPECT(new_fo != 0, FALSE)) {
-        /* new_fo is returned by GC_oom_fn(), so fn != 0 and hhdr != 0. */
+        /* new_fo is returned by GC_oom_fn().   */
+        GC_ASSERT(fn != 0 && hhdr != NULL);
         break;
       }
       if (fn == 0) {