# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1617999303 -7200
# Node ID 009a540f16a615143c5957da787c120a2d6d56f8
# Parent  02f699297c92607ba0dac2661df74b4202daefe8
patch 8.2.2741: Vim9: Partial call does not check right arguments

Commit: https://github.com/vim/vim/commit/1088b69451c739c698cf4c2003c2b994458ad18b
Author: Bram Moolenaar <Bram@vim.org>
Date:   Fri Apr 9 22:12:44 2021 +0200

    patch 8.2.2741: Vim9: Partial call does not check right arguments

    Problem:    Vim9: Partial call does not check right arguments.
    Solution:   Adjust the offset for whether the partial is before or after the
                arguments. (closes #8091)

diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -796,6 +796,8 @@ def Test_call_lambda_args()
     assert_equal('anything', Callback())
     assert_equal('anything', Callback(1))
     assert_equal('anything', Callback('a', 2))
+
+    assert_equal('xyz', ((a: string): string => a)('xyz'))
   END
   CheckDefAndScriptSuccess(lines)
 
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 */
 /**/
+    2741,
+/**/
     2740,
 /**/
     2739,
diff --git a/src/vim9compile.c b/src/vim9compile.c
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -1969,7 +1969,7 @@ generate_PCALL(
 
 		for (i = 0; i < argcount; ++i)
 		{
-		    int	    offset = -argcount + i - 1;
+		    int	    offset = -argcount + i - (at_top ? 0 : 1);
 		    type_T *actual = ((type_T **)stack->ga_data)[
 						       stack->ga_len + offset];
 		    type_T *expected;