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 #9589)
diff --git a/src/version.c b/src/version.c
index 154b7e3..f273a15 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 4178,
+/**/
4177,
/**/
4176,
diff --git a/src/vim9cmds.c b/src/vim9cmds.c
index 83ff699..27322df 100644
--- a/src/vim9cmds.c
+++ b/src/vim9cmds.c
@@ -2196,7 +2196,10 @@
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;