commit 32105ae88f3aa6a6af30336f0bc9f8eb81292cd7
author Bram Moolenaar <Bram@vim.org> Sat Mar 27 18:59:25 2021 +0100
committer Bram Moolenaar <Bram@vim.org> Sat Mar 27 18:59:25 2021 +0100
tree e414430d7c9e30127d37998fc0e427f3c4a8cdf3
parent 79efa2e3b3cdab8c21d95ba4ed9cb573566af531

patch 8.2.2664: Vim9: not enough function arguments checked for string

Problem:    Vim9: not enough function arguments checked for string.
Solution:   Check in balloon functions.  Refactor function arguments.

src/mbyte.c

diff --git a/src/mbyte.c b/src/mbyte.c
index 33b9ace..079e0d2 100644
--- a/src/mbyte.c
+++ b/src/mbyte.c
@@ -5551,7 +5551,7 @@
     void
 f_charclass(typval_T *argvars, typval_T *rettv UNUSED)
 {
-    if (check_for_string(&argvars[0], 1) == FAIL)
+    if (check_for_string_arg(argvars, 0) == FAIL)
 	return;
     rettv->vval.v_number = mb_get_class(argvars[0].vval.v_string);
 }