X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=clippy_lints%2Fsrc%2Flarge_stack_arrays.rs;h=bbb6c1f902ce077e7fcfc6f168021f71fb356cde;hb=e6455ea72ca3a4602f6a6b097cb80647a1f69388;hp=aa394c85e308c91d67d4023bd35a156275802828;hpb=f60f12f71f2060f386d9765cd60b653a58519a08;p=rust.git

diff --git a/clippy_lints/src/large_stack_arrays.rs b/clippy_lints/src/large_stack_arrays.rs
index aa394c85e30..bbb6c1f902c 100644
--- a/clippy_lints/src/large_stack_arrays.rs
+++ b/clippy_lints/src/large_stack_arrays.rs
@@ -1,22 +1,21 @@
-use rustc::mir::interpret::ConstValue;
-use rustc::ty::{self, ConstKind};
-use rustc_hir::*;
+use clippy_utils::diagnostics::span_lint_and_help;
+use clippy_utils::source::snippet;
+use if_chain::if_chain;
+use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
+use rustc_middle::mir::interpret::ConstValue;
+use rustc_middle::ty::layout::LayoutOf;
+use rustc_middle::ty::{self, ConstKind};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 
-use if_chain::if_chain;
-
-use crate::rustc_target::abi::LayoutOf;
-use crate::utils::{snippet, span_lint_and_help};
-
 declare_clippy_lint! {
-    /// **What it does:** Checks for local arrays that may be too large.
-    ///
-    /// **Why is this bad?** Large local arrays may cause stack overflow.
+    /// ### What it does
+    /// Checks for local arrays that may be too large.
     ///
-    /// **Known problems:** None.
+    /// ### Why is this bad?
+    /// Large local arrays may cause stack overflow.
     ///
-    /// **Example:**
+    /// ### Example
     /// ```rust,ignore
     /// let a = [0u32; 1_000_000];
     /// ```
@@ -38,13 +37,12 @@ pub fn new(maximum_allowed_size: u64) -> Self {
 
 impl_lint_pass!(LargeStackArrays => [LARGE_STACK_ARRAYS]);
 
-impl<'a, 'tcx> LateLintPass<'a, 'tcx> for LargeStackArrays {
-    fn check_expr(&mut self, cx: &LateContext<'_, '_>, expr: &Expr<'_>) {
+impl<'tcx> LateLintPass<'tcx> for LargeStackArrays {
+    fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) {
         if_chain! {
             if let ExprKind::Repeat(_, _) = expr.kind;
-            if let ty::Array(element_type, cst) = cx.tables.expr_ty(expr).kind;
-            if let ConstKind::Value(val) = cst.val;
-            if let ConstValue::Scalar(element_count) = val;
+            if let ty::Array(element_type, cst) = cx.typeck_results().expr_ty(expr).kind();
+            if let ConstKind::Value(ConstValue::Scalar(element_count)) = cst.val;
             if let Ok(element_count) = element_count.to_machine_usize(&cx.tcx);
             if let Ok(element_size) = cx.layout_of(element_type).map(|l| l.size.bytes());
             if self.maximum_allowed_size < element_count * element_size;
@@ -57,6 +55,7 @@ fn check_expr(&mut self, cx: &LateContext<'_, '_>, expr: &Expr<'_>) {
                         "allocating a local array larger than {} bytes",
                         self.maximum_allowed_size
                     ),
+                    None,
                     &format!(
                         "consider allocating on the heap with `vec!{}.into_boxed_slice()`",
                         snippet(cx, expr.span, "[...]")