From d4ba6b546632b3174533a2d099031362f74085e9 Mon Sep 17 00:00:00 2001
From: Ginger Bill <bill@gingerbill.org>
Date: Mon, 12 Sep 2016 15:10:15 +0100
Subject: Slice and substring bounds checking

---
 src/checker/expr.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/checker/expr.cpp')

diff --git a/src/checker/expr.cpp b/src/checker/expr.cpp
index 86c864e0e..9d83cca69 100644
--- a/src/checker/expr.cpp
+++ b/src/checker/expr.cpp
@@ -3347,6 +3347,9 @@ ExprKind check__expr_base(Checker *c, Operand *o, AstNode *node, Type *type_hint
 				if (o->mode == Addressing_Constant) {
 					max_count = o->value.value_string.len;
 				}
+				if (se->max != NULL) {
+					error(&c->error_collector, ast_node_token(se->max), "Max (3rd) index not needed in substring expression");
+				}
 				o->type = t_string;
 			}
 			break;
-- 
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