patch 8.2.3188: 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, also at runtime. (Yegappan
Lakshmanan, closes #8587)
diff --git a/src/eval.c b/src/eval.c
index 77774b7..a5c889a 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -4184,6 +4184,15 @@
void
f_slice(typval_T *argvars, typval_T *rettv)
{
+ if (in_vim9script()
+ && ((argvars[0].v_type != VAR_LIST
+ && argvars[0].v_type != VAR_BLOB
+ && argvars[0].v_type != VAR_STRING
+ && check_for_list_arg(argvars, 0) == FAIL)
+ || check_for_number_arg(argvars, 1) == FAIL
+ || check_for_opt_number_arg(argvars, 2) == FAIL))
+ return;
+
if (check_can_index(argvars, TRUE, FALSE) == OK)
{
copy_tv(argvars, rettv);