From 46cddbccd6d41458b6c9656b407a1a2729ee9ddb Mon Sep 17 00:00:00 2001
From: Ryan McConnell <rammcconnell@gmail.com>
Date: Tue, 3 Mar 2026 23:45:16 -0500
Subject: [PATCH] fixes #25572 ICE evaluating closure iter with object
 conversion (#25575)

---
 compiler/closureiters.nim                         |  2 +-
 tests/iter/tclosureiter_objupconv_methodawait.nim | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 tests/iter/tclosureiter_objupconv_methodawait.nim

diff --git a/compiler/closureiters.nim b/compiler/closureiters.nim
index ddf9c2704c..52f0bed2bb 100644
--- a/compiler/closureiters.nim
+++ b/compiler/closureiters.nim
@@ -727,7 +727,7 @@ proc lowerStmtListExprs(ctx: var Ctx, n: PNode, needsSplit: var bool): PNode =
       n[0] = ex
       result.add(n)
 
-  of nkCast, nkHiddenStdConv, nkHiddenSubConv, nkConv, nkObjDownConv,
+  of nkCast, nkHiddenStdConv, nkHiddenSubConv, nkConv, nkObjDownConv, nkObjUpConv,
       nkDerefExpr, nkHiddenDeref:
     var ns = false
     for i in ord(n.kind == nkCast)..<n.len:
diff --git a/tests/iter/tclosureiter_objupconv_methodawait.nim b/tests/iter/tclosureiter_objupconv_methodawait.nim
new file mode 100644
index 0000000000..671f70f923
--- /dev/null
+++ b/tests/iter/tclosureiter_objupconv_methodawait.nim
@@ -0,0 +1,12 @@
+discard """
+  cmd: "nim c $file"
+"""
+
+import std/asyncdispatch
+
+type
+  A {.inheritable.} = ref object
+  B = ref object of A
+
+method a(x: A): Future[A] {.async, base.} =
+  B(await a(B()))