From c14b60630d680addd5b4ef9c9b159a26a5446483 Mon Sep 17 00:00:00 2001
From: Luke Gruber <luke.gru@gmail.com>
Date: Fri, 13 Sep 2024 12:42:56 -0400
Subject: [PATCH] Fix coding issue in prism_compile.c

Make sure to set back `ISEQ_COMPILE_DATA(iseq)->current_block` for
forwarding super nodes with a block.

Fixes [Bug #20740]
---
 prism_compile.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/prism_compile.c b/prism_compile.c
index 03aff09259..044ef5083d 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -8057,6 +8057,9 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
             PUSH_GETLOCAL(ret, location, mult_local.index, mult_local.level);
             PUSH_INSN2(ret, location, invokesuperforward, new_callinfo(iseq, 0, 0, flag, NULL, block != NULL), block);
             if (popped) PUSH_INSN(ret, location, pop);
+            if (cast->block) {
+                ISEQ_COMPILE_DATA(iseq)->current_block = previous_block;
+            }
             return;
         }