commit 7973de35ba6840b7e106e2e8a8912522e9a2a960
author Yegappan Lakshmanan <yegappan@yahoo.com> Sat Jul 24 16:16:15 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Jul 24 16:16:15 2021 +0200
tree 8e8a1848f52a82af0a31111a0846c319a9544dd7
parent dd0b287c1ec8314034a2dbb14c4267994c47520c

patch 8.2.3211: Vim9: argument types are not checked at compile time

Problem:    Vim9: argument types are not checked at compile time.
Solution:   Add several more type checks. Fix type check for matchaddpos().
            (Yegappan Lakshmanan, closes #8619)

src/evalvars.c

diff --git a/src/evalvars.c b/src/evalvars.c
index f73efd3..1f781da 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -4112,6 +4112,11 @@
     dictitem_T	*v;
     int		done = FALSE;
 
+    if (in_vim9script()
+	    && (check_for_buffer_arg(argvars, 0) == FAIL
+		|| check_for_string_arg(argvars, 1) == FAIL))
+	return;
+
     varname = tv_get_string_chk(&argvars[1]);
     buf = tv_get_buf_from_arg(&argvars[0]);
 
@@ -4251,6 +4256,12 @@
 
     if (check_secure())
 	return;
+
+    if (in_vim9script()
+	    && (check_for_buffer_arg(argvars, 0) == FAIL
+		|| check_for_string_arg(argvars, 1) == FAIL))
+	return;
+
     varname = tv_get_string_chk(&argvars[1]);
     buf = tv_get_buf_from_arg(&argvars[0]);
     varp = &argvars[2];