[Fixes #17622] Mark and move the previous ep

1 files changed, 10 insertions, 0 deletions

diff --git a/vm.c b/vm.c
index 2899433182..ef1bf0facb 100644
--- a/vm.c
+++ b/vm.c
@@ -2806,6 +2806,11 @@ rb_execution_context_update(const rb_execution_context_t *ec)
             cfp->block_code = (void *)rb_gc_location((VALUE)cfp->block_code);
 
             if (!VM_ENV_LOCAL_P(ep)) {
+                const VALUE *prev_ep = VM_ENV_PREV_EP(ep);
+                if (VM_ENV_FLAGS(prev_ep, VM_ENV_FLAG_ESCAPED)) {
+                    VM_FORCE_WRITE(&prev_ep[VM_ENV_DATA_INDEX_ENV], rb_gc_location(prev_ep[VM_ENV_DATA_INDEX_ENV]));
+                }
+
                 if (VM_ENV_FLAGS(ep, VM_ENV_FLAG_ESCAPED)) {
                     VM_FORCE_WRITE(&ep[VM_ENV_DATA_INDEX_ENV], rb_gc_location(ep[VM_ENV_DATA_INDEX_ENV]));
                     VM_FORCE_WRITE(&ep[VM_ENV_DATA_INDEX_ME_CREF], rb_gc_location(ep[VM_ENV_DATA_INDEX_ME_CREF]));
@@ -2846,6 +2851,11 @@ rb_execution_context_mark(const rb_execution_context_t *ec)
             rb_gc_mark_movable((VALUE)cfp->block_code);
 
             if (!VM_ENV_LOCAL_P(ep)) {
+                const VALUE *prev_ep = VM_ENV_PREV_EP(ep);
+                if (VM_ENV_FLAGS(prev_ep, VM_ENV_FLAG_ESCAPED)) {
+                    rb_gc_mark_movable(prev_ep[VM_ENV_DATA_INDEX_ENV]);
+                }
+
 		if (VM_ENV_FLAGS(ep, VM_ENV_FLAG_ESCAPED)) {
                     rb_gc_mark_movable(ep[VM_ENV_DATA_INDEX_ENV]);
                     rb_gc_mark(ep[VM_ENV_DATA_INDEX_ME_CREF]);