Fix #2593

src/check_expr.cpp

@@ -4774,7 +4774,10 @@ gb_internal Entity *check_selector(CheckerContext *c, Operand *operand, Ast *nod
 
 	if (entity == nullptr && selector->kind == Ast_Ident) {
 		String field_name = selector->Ident.token.string;
-		if (is_type_dynamic_array(type_deref(operand->type))) {
+		Type *t = type_deref(operand->type);
+		if (t == nullptr) {
+			error(operand->expr, "Cannot use a selector expression on 0-value expression");
+		} else if (is_type_dynamic_array(t)) {
 			init_mem_allocator(c->checker);
 		}
 		sel = lookup_field(operand->type, field_name, operand->mode == Addressing_Type);