Fix #2496

2018-03-04 22:56:03 -05:00
parent e5f2d62c46
commit 3045f432c7
3 changed files with 19 additions and 1 deletions
--- a/clippy_lints/src/loops.rs
+++ b/clippy_lints/src/loops.rs
@@ -1624,7 +1624,8 @@ impl<'a, 'tcx> Visitor<'tcx> for VarVisitor<'a, 'tcx> {
        if_chain! {
            // a range index op
            if let ExprMethodCall(ref meth, _, ref args) = expr.node;
-            if meth.name == "index" || meth.name == "index_mut";
+            if (meth.name == "index" && match_trait_method(self.cx, expr, &paths::INDEX))
+                || (meth.name == "index_mut" && match_trait_method(self.cx, expr, &paths::INDEX_MUT));
            if !self.check(&args[1], &args[0], expr);
            then { return }
        }