Fix possible access to fromspace in MVM_frame_vivify_lexical

effective_sf can be in the nursery if it was allocated by freshcoderef
MoarVM · Apr 24, 2020 · 845e8a3 · 845e8a3
1 parent a95e5ac
commit 845e8a3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/core/frame.c b/src/core/frame.c
@@ -1286,7 +1286,7 @@ MVMObject * MVM_frame_vivify_lexical(MVMThreadContext *tc, MVMFrame *f, MVMuint1
             if (sc == NULL)
                 MVM_exception_throw_adhoc(tc,
                     "SC not yet resolved; lookup failed");
-            MVMROOT(tc, f, {
+            MVMROOT2(tc, f, effective_sf, {
                 resolved = MVM_sc_get_object(tc, sc, objid);
             });
             MVM_ASSIGN_REF(tc, &(effective_sf->common.header),