From e24a6fccb59040761df58c7a04b49eef96ba1690 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Tue, 26 Nov 2024 23:29:19 +0800
Subject: [PATCH] fixes #24476; fold proc convs if they are same types for
 backend

---
 compiler/semfold.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/semfold.nim b/compiler/semfold.nim
index eb5db88fc9..eeadf00785 100644
--- a/compiler/semfold.nim
+++ b/compiler/semfold.nim
@@ -777,7 +777,8 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode
     var a = getConstExpr(m, n[1], idgen, g)
     if a == nil: return
     if n.typ != nil and n.typ.kind in NilableTypes and
-        not (n.typ.kind == tyProc and a.typ.kind == tyProc):
+        (n.typ.kind != tyProc or a.typ.kind != tyProc or
+          sameBackendType(n.typ, a.typ)):
       # we allow compile-time 'cast' for pointer types:
       result = a
       result.typ() = n.typ