patch 8.2.4459: Vim9: compiling sort() call fails with unknown argumentsv8.2.4459

Problem:    Vim9: compiling sort() call fails with a funcref that has unknown
            arguments.
Solution:   Do not check the arguments if they are unknown at compile time.
            (closes #9835)

1 files changed, 2 insertions, 0 deletions

diff --git a/src/evalfunc.c b/src/evalfunc.c
index e8ed4bab04..1b93200367 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -624,6 +624,8 @@ arg_sort_how(type_T *type, type_T *decl_type UNUSED, argcontext_T *context)
 	    where_T where = WHERE_INIT;
 
 	    args[1] = args[0];
+	    if (type->tt_argcount == -1)
+		t_func_exp.tt_argcount = -1;
 	    where.wt_index = 2;
 	    return check_type(&t_func_exp, type, TRUE, where);
 	}