Auto merge of #4551 - mikerite:fix-ice-reporting, r=llogiq

[rust.git] / clippy_lints / src / bytecount.rs

diff --git a/clippy_lints/src/bytecount.rs b/clippy_lints/src/bytecount.rs
index 5716927be03e40e80baaa29be4f37a519a5848f0..1e1e4317e34ec48687c4c4da5762cfb453013088 100644 (file)
--- a/clippy_lints/src/bytecount.rs
+++ b/clippy_lints/src/bytecount.rs
@@ -24,7 +24,8 @@
     /// **Example:**
     ///
     /// ```rust
-    /// &my_data.filter(|&x| x == 0u8).count() // use bytecount::count instead
+    /// # let vec = vec![1_u8];
+    /// &vec.iter().filter(|x| **x == 0u8).count(); // use bytecount::count instead
     /// ```
     pub NAIVE_BYTECOUNT,
     perf,
@@ -37,17 +38,17 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for ByteCount {
     fn check_expr(&mut self, cx: &LateContext<'_, '_>, expr: &Expr) {
         if_chain! {
             if let ExprKind::MethodCall(ref count, _, ref count_args) = expr.node;
-            if count.ident.name == "count";
+            if count.ident.name == sym!(count);
             if count_args.len() == 1;
             if let ExprKind::MethodCall(ref filter, _, ref filter_args) = count_args[0].node;
-            if filter.ident.name == "filter";
+            if filter.ident.name == sym!(filter);
             if filter_args.len() == 2;
             if let ExprKind::Closure(_, _, body_id, _, _) = filter_args[1].node;
             then {
                 let body = cx.tcx.hir().body(body_id);
                 if_chain! {
-                    if body.arguments.len() == 1;
-                    if let Some(argname) = get_pat_name(&body.arguments[0].pat);
+                    if body.params.len() == 1;
+                    if let Some(argname) = get_pat_name(&body.params[0].pat);
                     if let ExprKind::Binary(ref op, ref l, ref r) = body.value.node;
                     if op.node == BinOpKind::Eq;
                     if match_type(cx,
@@ -67,7 +68,7 @@ fn check_expr(&mut self, cx: &LateContext<'_, '_>, expr: &Expr) {
                         let haystack = if let ExprKind::MethodCall(ref path, _, ref args) =
                                 filter_args[0].node {
                             let p = path.ident.name;
-                            if (p == "iter" || p == "iter_mut") && args.len() == 1 {
+                            if (p == sym!(iter) || p == sym!(iter_mut)) && args.len() == 1 {
                                 &args[0]
                             } else {
                                 &filter_args[0]