Report an error when the index of an array access is not of integer type.

diff --git a/parser.c b/parser.c
index a8ac494..2e59eed 100644 (file)
--- a/parser.c
+++ b/parser.c
@@ -7224,7 +7224,9 @@ static expression_t *parse_array_expression(expression_t *left)
                res_type = type_inside->pointer.points_to;
 check_idx:
                res_type = automatic_type_conversion(res_type);
-               if (is_type_atomic(idx_type, ATOMIC_TYPE_CHAR) && warning.char_subscripts) {
+               if (!is_type_integer(idx_type)) {
+                       errorf(&idx->base.source_position, "array subscript must have integer type");
+               } else if (is_type_atomic(idx_type, ATOMIC_TYPE_CHAR) && warning.char_subscripts) {
                        warningf(&idx->base.source_position, "array subscript has char type");
                }
        } else {