Assign temporary ID to anonymous ID [Bug #18250]

Dumped iseq binary can not have unnamed symbols/IDs, and ID 0 is
stored instead.  As `struct rb_id_table` disallows ID 0, also for
the distinction, re-assign a new temporary ID based on the local
variable table index when loading from the binary, as well as the
parser.

1 files changed, 1 insertions, 4 deletions

diff --git a/parse.y b/parse.y
index d386561f6a..29517daa20 100644
--- a/parse.y
+++ b/parse.y
@@ -13090,10 +13090,7 @@ rb_init_parse(void)
 static ID
 internal_id(struct parser_params *p)
 {
-    const ID max_id = RB_ID_SERIAL_MAX & ~0xffff;
-    ID id = (ID)vtable_size(p->lvtbl->args) + (ID)vtable_size(p->lvtbl->vars);
-    id = max_id - id;
-    return ID_STATIC_SYM | ID_INTERNAL | (id << ID_SCOPE_SHIFT);
+    return rb_make_temporary_id(vtable_size(p->lvtbl->args) + vtable_size(p->lvtbl->vars));
 }
 #endif /* !RIPPER */