Stash the imemo buf at the end of the ID list

Now we can reach the ID table buffer from the id table itself, so when
SCOPE nodes are marked we can keep the buffers alive.  This eliminates
the need for the "mark array" during normal parse / compile (IOW *not*
Ripper).

1 files changed, 9 insertions, 1 deletions

diff --git a/node.c b/node.c
index 8a519f2947..064ce006ad 100644
--- a/node.c
+++ b/node.c
@@ -1218,6 +1218,15 @@ static void
 mark_ast_value(void *ctx, NODE * node)
 {
     switch (nd_type(node)) {
+        case NODE_SCOPE:
+        {
+            ID *buf = node->nd_tbl;
+            if (buf) {
+                unsigned int size = (unsigned int)*buf;
+                rb_gc_mark((VALUE)buf[size + 1]);
+            }
+            break;
+        }
         case NODE_LIT:
         case NODE_STR:
         case NODE_XSTR:
@@ -1226,7 +1235,6 @@ mark_ast_value(void *ctx, NODE * node)
         case NODE_DREGX:
         case NODE_DSYM:
         case NODE_ARGS:
-        case NODE_FOR:
         case NODE_ARYPTN:
             rb_gc_mark(node->nd_lit);
             break;