From 65e0906e690bdbfa98197463fb1d452be9142618 Mon Sep 17 00:00:00 2001
From: Yuriy Glukhov <yglukhov@users.noreply.github.com>
Date: Wed, 3 Aug 2022 08:46:36 +0200
Subject: [PATCH] Fixed compilation of void closureiters with try stmt (#20138)
 [backport]

(cherry picked from commit 0d734d7966644018207a20cf23f16912f9c276d8)
---
 compiler/closureiters.nim  | 11 +++++++----
 tests/iter/tyieldintry.nim |  8 ++++++++
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/compiler/closureiters.nim b/compiler/closureiters.nim
index 279329d08e..5d6feca70c 100644
--- a/compiler/closureiters.nim
+++ b/compiler/closureiters.nim
@@ -822,10 +822,13 @@ proc newEndFinallyNode(ctx: var Ctx, info: TLineInfo): PNode =
   let retStmt =
     if ctx.nearestFinally == 0:
       # last finally, we can return
-      let asgn = newTree(nkFastAsgn,
-        newSymNode(getClosureIterResult(ctx.g, ctx.fn, ctx.idgen), info),
-        ctx.newTmpResultAccess())
-      newTree(nkReturnStmt, asgn)
+      let retValue = if ctx.fn.typ[0].isNil:
+                   ctx.g.emptyNode
+                 else:
+                   newTree(nkFastAsgn,
+                           newSymNode(getClosureIterResult(ctx.g, ctx.fn, ctx.idgen), info),
+                           ctx.newTmpResultAccess())
+      newTree(nkReturnStmt, retValue)
     else:
       # bubble up to next finally
       newTree(nkGotoState, ctx.g.newIntLit(info, ctx.nearestFinally))
diff --git a/tests/iter/tyieldintry.nim b/tests/iter/tyieldintry.nim
index 9862fe1dec..9df201dd46 100644
--- a/tests/iter/tyieldintry.nim
+++ b/tests/iter/tyieldintry.nim
@@ -495,3 +495,11 @@ block: #17849 - yield in case subject
     yield 5
 
   test(it, 1, 2, 13, 5)
+
+block: # void iterator
+  iterator it() {.closure.} =
+    try:
+      yield
+    except:
+      discard
+  var a = it