# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1642854605 -3600
# Node ID 7218ad7a55d2f2fdfc00ec6222abc13909516cef
# Parent  3e5e360d90963b40919a8bd66a279b44df4c0933
patch 8.2.4178: Vim9: invalid error for return type of lambda when debugging

Commit: https://github.com/vim/vim/commit/0bfa84916d110d4f4d863e91e144ff05ba431316
Author: Bram Moolenaar <Bram@vim.org>
Date:   Sat Jan 22 12:27:04 2022 +0000

    patch 8.2.4178: Vim9: invalid error for return type of lambda when debugging

    Problem:    Vim9: invalid error for return type of lambda when debugging.
    Solution:   Do not check the return type of a lambda. (closes https://github.com/vim/vim/issues/9589)

diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4178,
+/**/
     4177,
 /**/
     4176,
diff --git a/src/vim9cmds.c b/src/vim9cmds.c
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -2196,7 +2196,10 @@ compile_return(char_u *arg, int check_re
 
     if (*p != NUL && *p != '|' && *p != '\n')
     {
-	if (cctx->ctx_ufunc->uf_ret_type->tt_type == VAR_VOID)
+	// For a lambda, "return expr" is always used, also when "expr" results
+	// in a void.
+	if (cctx->ctx_ufunc->uf_ret_type->tt_type == VAR_VOID
+		&& (cctx->ctx_ufunc->uf_flags & FC_LAMBDA) == 0)
 	{
 	    emsg(_(e_returning_value_in_function_without_return_type));
 	    return NULL;