9 files changed, 290 insertions, 186 deletions

diff --git a/clippy_lints/src/operators/arithmetic_side_effects.rs b/clippy_lints/src/operators/arithmetic_side_effects.rs
index e5713735672..6c050c2cb8b 100644
--- a/clippy_lints/src/operators/arithmetic_side_effects.rs
+++ b/clippy_lints/src/operators/arithmetic_side_effects.rs
@@ -1,4 +1,5 @@
 use super::ARITHMETIC_SIDE_EFFECTS;
+use clippy_utils::is_from_proc_macro;
 use clippy_utils::{
     consts::{constant, constant_simple, Constant},
     diagnostics::span_lint,
@@ -206,8 +207,9 @@ impl ArithmeticSideEffects {
         self.issue_lint(cx, expr);
     }
 
-    fn should_skip_expr(&mut self, cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> bool {
+    fn should_skip_expr<'tcx>(&mut self, cx: &LateContext<'tcx>, expr: &hir::Expr<'tcx>) -> bool {
         is_lint_allowed(cx, ARITHMETIC_SIDE_EFFECTS, expr.hir_id)
+            || is_from_proc_macro(cx, expr)
             || self.expr_span.is_some()
             || self.const_span.map_or(false, |sp| sp.contains(expr.span))
     }
diff --git a/clippy_lints/src/operators/numeric_arithmetic.rs b/clippy_lints/src/operators/numeric_arithmetic.rs
index 777395f452c..ea9696691f9 100644
--- a/clippy_lints/src/operators/numeric_arithmetic.rs
+++ b/clippy_lints/src/operators/numeric_arithmetic.rs
@@ -1,12 +1,12 @@
+use super::{FLOAT_ARITHMETIC, INTEGER_ARITHMETIC};
 use clippy_utils::consts::constant_simple;
 use clippy_utils::diagnostics::span_lint;
+use clippy_utils::is_from_proc_macro;
 use clippy_utils::is_integer_literal;
 use rustc_hir as hir;
 use rustc_lint::LateContext;
 use rustc_span::source_map::Span;
 
-use super::{FLOAT_ARITHMETIC, INTEGER_ARITHMETIC};
-
 #[derive(Default)]
 pub struct Context {
     expr_id: Option<hir::HirId>,
@@ -19,6 +19,10 @@ impl Context {
         self.expr_id.is_some() || self.const_span.map_or(false, |span| span.contains(e.span))
     }
 
+    fn skip_expr_involving_integers<'tcx>(cx: &LateContext<'tcx>, e: &hir::Expr<'tcx>) -> bool {
+        is_from_proc_macro(cx, e)
+    }
+
     pub fn check_binary<'tcx>(
         &mut self,
         cx: &LateContext<'tcx>,
@@ -47,6 +51,9 @@ impl Context {
 
         let (l_ty, r_ty) = (cx.typeck_results().expr_ty(l), cx.typeck_results().expr_ty(r));
         if l_ty.peel_refs().is_integral() && r_ty.peel_refs().is_integral() {
+            if Self::skip_expr_involving_integers(cx, expr) {
+                return;
+            }
             match op {
                 hir::BinOpKind::Div | hir::BinOpKind::Rem => match &r.kind {
                     hir::ExprKind::Lit(_lit) => (),
@@ -79,6 +86,9 @@ impl Context {
         let ty = cx.typeck_results().expr_ty(arg);
         if constant_simple(cx, cx.typeck_results(), expr).is_none() {
             if ty.is_integral() {
+                if Self::skip_expr_involving_integers(cx, expr) {
+                    return;
+                }
                 span_lint(cx, INTEGER_ARITHMETIC, expr.span, "integer arithmetic detected");
                 self.expr_id = Some(expr.hir_id);
             } else if ty.is_floating_point() {
diff --git a/tests/ui/arithmetic_side_effects.rs b/tests/ui/arithmetic_side_effects.rs
index 3c06676d722..ab7e66a264d 100644
--- a/tests/ui/arithmetic_side_effects.rs
+++ b/tests/ui/arithmetic_side_effects.rs
@@ -1,3 +1,5 @@
+// aux-build:proc_macro_derive.rs
+
 #![allow(
     clippy::assign_op_pattern,
     clippy::erasing_op,
@@ -11,6 +13,8 @@
 #![feature(const_mut_refs, inline_const, saturating_int_impl)]
 #![warn(clippy::arithmetic_side_effects)]
 
+extern crate proc_macro_derive;
+
 use core::num::{Saturating, Wrapping};
 
 const ONE: i32 = 1;
@@ -19,6 +23,9 @@ const ZERO: i32 = 0;
 #[derive(Clone, Copy)]
 pub struct Custom;
 
+#[derive(proc_macro_derive::ShadowDerive)]
+pub struct Nothing;
+
 macro_rules! impl_arith {
     ( $( $_trait:ident, $lhs:ty, $rhs:ty, $method:ident; )* ) => {
         $(
diff --git a/tests/ui/arithmetic_side_effects.stderr b/tests/ui/arithmetic_side_effects.stderr
index 2c8ee2884e7..a036cadb9a0 100644
--- a/tests/ui/arithmetic_side_effects.stderr
+++ b/tests/ui/arithmetic_side_effects.stderr
@@ -1,5 +1,5 @@
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:286:5
+  --> $DIR/arithmetic_side_effects.rs:293:5
    |
 LL |     _n += 1;
    |     ^^^^^^^
@@ -7,649 +7,649 @@ LL |     _n += 1;
    = note: `-D clippy::arithmetic-side-effects` implied by `-D warnings`
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:287:5
+  --> $DIR/arithmetic_side_effects.rs:294:5
    |
 LL |     _n += &1;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:288:5
+  --> $DIR/arithmetic_side_effects.rs:295:5
    |
 LL |     _n -= 1;
    |     ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:289:5
+  --> $DIR/arithmetic_side_effects.rs:296:5
    |
 LL |     _n -= &1;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:290:5
+  --> $DIR/arithmetic_side_effects.rs:297:5
    |
 LL |     _n /= 0;
    |     ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:291:5
+  --> $DIR/arithmetic_side_effects.rs:298:5
    |
 LL |     _n /= &0;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:292:5
+  --> $DIR/arithmetic_side_effects.rs:299:5
    |
 LL |     _n %= 0;
    |     ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:293:5
+  --> $DIR/arithmetic_side_effects.rs:300:5
    |
 LL |     _n %= &0;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:294:5
+  --> $DIR/arithmetic_side_effects.rs:301:5
    |
 LL |     _n *= 2;
    |     ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:295:5
+  --> $DIR/arithmetic_side_effects.rs:302:5
    |
 LL |     _n *= &2;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:296:5
+  --> $DIR/arithmetic_side_effects.rs:303:5
    |
 LL |     _n += -1;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:297:5
+  --> $DIR/arithmetic_side_effects.rs:304:5
    |
 LL |     _n += &-1;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:298:5
+  --> $DIR/arithmetic_side_effects.rs:305:5
    |
 LL |     _n -= -1;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:299:5
+  --> $DIR/arithmetic_side_effects.rs:306:5
    |
 LL |     _n -= &-1;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:300:5
+  --> $DIR/arithmetic_side_effects.rs:307:5
    |
 LL |     _n /= -0;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:301:5
+  --> $DIR/arithmetic_side_effects.rs:308:5
    |
 LL |     _n /= &-0;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:302:5
+  --> $DIR/arithmetic_side_effects.rs:309:5
    |
 LL |     _n %= -0;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:303:5
+  --> $DIR/arithmetic_side_effects.rs:310:5
    |
 LL |     _n %= &-0;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:304:5
+  --> $DIR/arithmetic_side_effects.rs:311:5
    |
 LL |     _n *= -2;
    |     ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:305:5
+  --> $DIR/arithmetic_side_effects.rs:312:5
    |
 LL |     _n *= &-2;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:306:5
+  --> $DIR/arithmetic_side_effects.rs:313:5
    |
 LL |     _custom += Custom;
    |     ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:307:5
+  --> $DIR/arithmetic_side_effects.rs:314:5
    |
 LL |     _custom += &Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:308:5
+  --> $DIR/arithmetic_side_effects.rs:315:5
    |
 LL |     _custom -= Custom;
    |     ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:309:5
+  --> $DIR/arithmetic_side_effects.rs:316:5
    |
 LL |     _custom -= &Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:310:5
+  --> $DIR/arithmetic_side_effects.rs:317:5
    |
 LL |     _custom /= Custom;
    |     ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:311:5
+  --> $DIR/arithmetic_side_effects.rs:318:5
    |
 LL |     _custom /= &Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:312:5
+  --> $DIR/arithmetic_side_effects.rs:319:5
    |
 LL |     _custom %= Custom;
    |     ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:313:5
+  --> $DIR/arithmetic_side_effects.rs:320:5
    |
 LL |     _custom %= &Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:314:5
+  --> $DIR/arithmetic_side_effects.rs:321:5
    |
 LL |     _custom *= Custom;
    |     ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:315:5
+  --> $DIR/arithmetic_side_effects.rs:322:5
    |
 LL |     _custom *= &Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:316:5
+  --> $DIR/arithmetic_side_effects.rs:323:5
    |
 LL |     _custom >>= Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:317:5
+  --> $DIR/arithmetic_side_effects.rs:324:5
    |
 LL |     _custom >>= &Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:318:5
+  --> $DIR/arithmetic_side_effects.rs:325:5
    |
 LL |     _custom <<= Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:319:5
+  --> $DIR/arithmetic_side_effects.rs:326:5
    |
 LL |     _custom <<= &Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:320:5
+  --> $DIR/arithmetic_side_effects.rs:327:5
    |
 LL |     _custom += -Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:321:5
+  --> $DIR/arithmetic_side_effects.rs:328:5
    |
 LL |     _custom += &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:322:5
+  --> $DIR/arithmetic_side_effects.rs:329:5
    |
 LL |     _custom -= -Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:323:5
+  --> $DIR/arithmetic_side_effects.rs:330:5
    |
 LL |     _custom -= &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:324:5
+  --> $DIR/arithmetic_side_effects.rs:331:5
    |
 LL |     _custom /= -Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:325:5
+  --> $DIR/arithmetic_side_effects.rs:332:5
    |
 LL |     _custom /= &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:326:5
+  --> $DIR/arithmetic_side_effects.rs:333:5
    |
 LL |     _custom %= -Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:327:5
+  --> $DIR/arithmetic_side_effects.rs:334:5
    |
 LL |     _custom %= &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:328:5
+  --> $DIR/arithmetic_side_effects.rs:335:5
    |
 LL |     _custom *= -Custom;
    |     ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:329:5
+  --> $DIR/arithmetic_side_effects.rs:336:5
    |
 LL |     _custom *= &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:330:5
+  --> $DIR/arithmetic_side_effects.rs:337:5
    |
 LL |     _custom >>= -Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:331:5
+  --> $DIR/arithmetic_side_effects.rs:338:5
    |
 LL |     _custom >>= &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:332:5
+  --> $DIR/arithmetic_side_effects.rs:339:5
    |
 LL |     _custom <<= -Custom;
    |     ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:333:5
+  --> $DIR/arithmetic_side_effects.rs:340:5
    |
 LL |     _custom <<= &-Custom;
    |     ^^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:336:10
+  --> $DIR/arithmetic_side_effects.rs:343:10
    |
 LL |     _n = _n + 1;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:337:10
+  --> $DIR/arithmetic_side_effects.rs:344:10
    |
 LL |     _n = _n + &1;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:338:10
+  --> $DIR/arithmetic_side_effects.rs:345:10
    |
 LL |     _n = 1 + _n;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:339:10
+  --> $DIR/arithmetic_side_effects.rs:346:10
    |
 LL |     _n = &1 + _n;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:340:10
+  --> $DIR/arithmetic_side_effects.rs:347:10
    |
 LL |     _n = _n - 1;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:341:10
+  --> $DIR/arithmetic_side_effects.rs:348:10
    |
 LL |     _n = _n - &1;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:342:10
+  --> $DIR/arithmetic_side_effects.rs:349:10
    |
 LL |     _n = 1 - _n;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:343:10
+  --> $DIR/arithmetic_side_effects.rs:350:10
    |
 LL |     _n = &1 - _n;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:344:10
+  --> $DIR/arithmetic_side_effects.rs:351:10
    |
 LL |     _n = _n / 0;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:345:10
+  --> $DIR/arithmetic_side_effects.rs:352:10
    |
 LL |     _n = _n / &0;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:346:10
+  --> $DIR/arithmetic_side_effects.rs:353:10
    |
 LL |     _n = _n % 0;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:347:10
+  --> $DIR/arithmetic_side_effects.rs:354:10
    |
 LL |     _n = _n % &0;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:348:10
+  --> $DIR/arithmetic_side_effects.rs:355:10
    |
 LL |     _n = _n * 2;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:349:10
+  --> $DIR/arithmetic_side_effects.rs:356:10
    |
 LL |     _n = _n * &2;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:350:10
+  --> $DIR/arithmetic_side_effects.rs:357:10
    |
 LL |     _n = 2 * _n;
    |          ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:351:10
+  --> $DIR/arithmetic_side_effects.rs:358:10
    |
 LL |     _n = &2 * _n;
    |          ^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:352:10
+  --> $DIR/arithmetic_side_effects.rs:359:10
    |
 LL |     _n = 23 + &85;
    |          ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:353:10
+  --> $DIR/arithmetic_side_effects.rs:360:10
    |
 LL |     _n = &23 + 85;
    |          ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:354:10
+  --> $DIR/arithmetic_side_effects.rs:361:10
    |
 LL |     _n = &23 + &85;
    |          ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:355:15
+  --> $DIR/arithmetic_side_effects.rs:362:15
    |
 LL |     _custom = _custom + _custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:356:15
+  --> $DIR/arithmetic_side_effects.rs:363:15
    |
 LL |     _custom = _custom + &_custom;
    |               ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:357:15
+  --> $DIR/arithmetic_side_effects.rs:364:15
    |
 LL |     _custom = Custom + _custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:358:15
+  --> $DIR/arithmetic_side_effects.rs:365:15
    |
 LL |     _custom = &Custom + _custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:359:15
+  --> $DIR/arithmetic_side_effects.rs:366:15
    |
 LL |     _custom = _custom - Custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:360:15
+  --> $DIR/arithmetic_side_effects.rs:367:15
    |
 LL |     _custom = _custom - &Custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:361:15
+  --> $DIR/arithmetic_side_effects.rs:368:15
    |
 LL |     _custom = Custom - _custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:362:15
+  --> $DIR/arithmetic_side_effects.rs:369:15
    |
 LL |     _custom = &Custom - _custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:363:15
+  --> $DIR/arithmetic_side_effects.rs:370:15
    |
 LL |     _custom = _custom / Custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:364:15
+  --> $DIR/arithmetic_side_effects.rs:371:15
    |
 LL |     _custom = _custom / &Custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:365:15
+  --> $DIR/arithmetic_side_effects.rs:372:15
    |
 LL |     _custom = _custom % Custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:366:15
+  --> $DIR/arithmetic_side_effects.rs:373:15
    |
 LL |     _custom = _custom % &Custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:367:15
+  --> $DIR/arithmetic_side_effects.rs:374:15
    |
 LL |     _custom = _custom * Custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:368:15
+  --> $DIR/arithmetic_side_effects.rs:375:15
    |
 LL |     _custom = _custom * &Custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:369:15
+  --> $DIR/arithmetic_side_effects.rs:376:15
    |
 LL |     _custom = Custom * _custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:370:15
+  --> $DIR/arithmetic_side_effects.rs:377:15
    |
 LL |     _custom = &Custom * _custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:371:15
+  --> $DIR/arithmetic_side_effects.rs:378:15
    |
 LL |     _custom = Custom + &Custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:372:15
+  --> $DIR/arithmetic_side_effects.rs:379:15
    |
 LL |     _custom = &Custom + Custom;
    |               ^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:373:15
+  --> $DIR/arithmetic_side_effects.rs:380:15
    |
 LL |     _custom = &Custom + &Custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:374:15
+  --> $DIR/arithmetic_side_effects.rs:381:15
    |
 LL |     _custom = _custom >> _custom;
    |               ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:375:15
+  --> $DIR/arithmetic_side_effects.rs:382:15
    |
 LL |     _custom = _custom >> &_custom;
    |               ^^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:376:15
+  --> $DIR/arithmetic_side_effects.rs:383:15
    |
 LL |     _custom = Custom << _custom;
    |               ^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:377:15
+  --> $DIR/arithmetic_side_effects.rs:384:15
    |
 LL |     _custom = &Custom << _custom;
    |               ^^^^^^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:380:10
+  --> $DIR/arithmetic_side_effects.rs:387:10
    |
 LL |     _n = -_n;
    |          ^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:381:10
+  --> $DIR/arithmetic_side_effects.rs:388:10
    |
 LL |     _n = -&_n;
    |          ^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:382:15
+  --> $DIR/arithmetic_side_effects.rs:389:15
    |
 LL |     _custom = -_custom;
    |               ^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:383:15
+  --> $DIR/arithmetic_side_effects.rs:390:15
    |
 LL |     _custom = -&_custom;
    |               ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:392:5
+  --> $DIR/arithmetic_side_effects.rs:399:5
    |
 LL |     1 + i;
    |     ^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:393:5
+  --> $DIR/arithmetic_side_effects.rs:400:5
    |
 LL |     i * 2;
    |     ^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:394:5
+  --> $DIR/arithmetic_side_effects.rs:401:5
    |
 LL |     1 % i / 2;
    |     ^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:395:5
+  --> $DIR/arithmetic_side_effects.rs:402:5
    |
 LL |     i - 2 + 2 - i;
    |     ^^^^^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:396:5
+  --> $DIR/arithmetic_side_effects.rs:403:5
    |
 LL |     -i;
    |     ^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:407:5
+  --> $DIR/arithmetic_side_effects.rs:414:5
    |
 LL |     i += 1;
    |     ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:408:5
+  --> $DIR/arithmetic_side_effects.rs:415:5
    |
 LL |     i -= 1;
    |     ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:409:5
+  --> $DIR/arithmetic_side_effects.rs:416:5
    |
 LL |     i *= 2;
    |     ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:411:5
+  --> $DIR/arithmetic_side_effects.rs:418:5
    |
 LL |     i /= 0;
    |     ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:413:5
+  --> $DIR/arithmetic_side_effects.rs:420:5
    |
 LL |     i /= var1;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:414:5
+  --> $DIR/arithmetic_side_effects.rs:421:5
    |
 LL |     i /= var2;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:416:5
+  --> $DIR/arithmetic_side_effects.rs:423:5
    |
 LL |     i %= 0;
    |     ^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:418:5
+  --> $DIR/arithmetic_side_effects.rs:425:5
    |
 LL |     i %= var1;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:419:5
+  --> $DIR/arithmetic_side_effects.rs:426:5
    |
 LL |     i %= var2;
    |     ^^^^^^^^^
 
 error: arithmetic operation that can potentially result in unexpected side-effects
-  --> $DIR/arithmetic_side_effects.rs:429:5
+  --> $DIR/arithmetic_side_effects.rs:436:5
    |
 LL |     10 / a
    |     ^^^^^^
diff --git a/tests/ui/auxiliary/proc_macro_derive.rs b/tests/ui/auxiliary/proc_macro_derive.rs
index a89a06308d0..13d93f5c275 100644
--- a/tests/ui/auxiliary/proc_macro_derive.rs
+++ b/tests/ui/auxiliary/proc_macro_derive.rs
@@ -9,7 +9,7 @@
 
 extern crate proc_macro;
 
-use proc_macro::{quote, TokenStream};
+use proc_macro::{quote, Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
 
 #[proc_macro_derive(DeriveSomething)]
 pub fn derive(_: TokenStream) -> TokenStream {
@@ -86,3 +86,74 @@ pub fn extra_lifetime(_input: TokenStream) -> TokenStream {
         }
     )
 }
+
+#[allow(unused)]
+#[proc_macro_derive(ArithmeticDerive)]
+pub fn arithmetic_derive(_: TokenStream) -> TokenStream {
+    <TokenStream as FromIterator<TokenTree>>::from_iter(
+        [
+            Ident::new("fn", Span::call_site()).into(),
+            Ident::new("_foo", Span::call_site()).into(),
+            Group::new(Delimiter::Parenthesis, TokenStream::new()).into(),
+            Group::new(
+                Delimiter::Brace,
+                <TokenStream as FromIterator<TokenTree>>::from_iter(
+                    [
+                        Ident::new("let", Span::call_site()).into(),
+                        Ident::new("mut", Span::call_site()).into(),
+                        Ident::new("_n", Span::call_site()).into(),
+                        Punct::new('=', Spacing::Alone).into(),
+                        Literal::i32_unsuffixed(9).into(),
+                        Punct::new(';', Spacing::Alone).into(),
+                        Ident::new("_n", Span::call_site()).into(),
+                        Punct::new('=', Spacing::Alone).into(),
+                        Literal::i32_unsuffixed(9).into(),
+                        Punct::new('/', Spacing::Alone).into(),
+                        Literal::i32_unsuffixed(2).into(),
+                        Punct::new(';', Spacing::Alone).into(),
+                        Ident::new("_n", Span::call_site()).into(),
+                        Punct::new('=', Spacing::Alone).into(),
+                        Punct::new('-', Spacing::Alone).into(),
+                        Ident::new("_n", Span::call_site()).into(),
+                        Punct::new(';', Spacing::Alone).into(),
+                    ]
+                    .into_iter(),
+                ),
+            )
+            .into(),
+        ]
+        .into_iter(),
+    )
+}
+
+#[allow(unused)]
+#[proc_macro_derive(ShadowDerive)]
+pub fn shadow_derive(_: TokenStream) -> TokenStream {
+    <TokenStream as FromIterator<TokenTree>>::from_iter(
+        [
+            Ident::new("fn", Span::call_site()).into(),
+            Ident::new("_foo", Span::call_site()).into(),
+            Group::new(Delimiter::Parenthesis, TokenStream::new()).into(),
+            Group::new(
+                Delimiter::Brace,
+                <TokenStream as FromIterator<TokenTree>>::from_iter(
+                    [
+                        Ident::new("let", Span::call_site()).into(),
+                        Ident::new("_x", Span::call_site()).into(),
+                        Punct::new('=', Spacing::Alone).into(),
+                        Literal::i32_unsuffixed(2).into(),
+                        Punct::new(';', Spacing::Alone).into(),
+                        Ident::new("let", Span::call_site()).into(),
+                        Ident::new("_x", Span::call_site()).into(),
+                        Punct::new('=', Spacing::Alone).into(),
+                        Ident::new("_x", Span::call_site()).into(),
+                        Punct::new(';', Spacing::Alone).into(),
+                    ]
+                    .into_iter(),
+                ),
+            )
+            .into(),
+        ]
+        .into_iter(),
+    )
+}
diff --git a/tests/ui/integer_arithmetic.rs b/tests/ui/integer_arithmetic.rs
index 8dfdee662b9..d253d103127 100644
--- a/tests/ui/integer_arithmetic.rs
+++ b/tests/ui/integer_arithmetic.rs
@@ -1,6 +1,13 @@
+// aux-build:proc_macro_derive.rs
+
 #![warn(clippy::integer_arithmetic, clippy::float_arithmetic)]
 #![allow(clippy::no_effect, clippy::unnecessary_operation, clippy::op_ref)]
 
+extern crate proc_macro_derive;
+
+#[derive(proc_macro_derive::ShadowDerive)]
+pub struct Nothing;
+
 #[rustfmt::skip]
 fn main() {
     let mut i = 1i32;
diff --git a/tests/ui/integer_arithmetic.stderr b/tests/ui/integer_arithmetic.stderr
index 9a795b1f291..add3b6b90fa 100644
--- a/tests/ui/integer_arithmetic.stderr
+++ b/tests/ui/integer_arithmetic.stderr
@@ -1,5 +1,5 @@
 error: this operation will panic at runtime
-  --> $DIR/integer_arithmetic.rs:30:5
+  --> $DIR/integer_arithmetic.rs:37:5
    |
 LL |     i /= 0;
    |     ^^^^^^ attempt to divide `_` by zero
@@ -7,13 +7,13 @@ LL |     i /= 0;
    = note: `#[deny(unconditional_panic)]` on by default
 
 error: this operation will panic at runtime
-  --> $DIR/integer_arithmetic.rs:35:5
+  --> $DIR/integer_arithmetic.rs:42:5
    |
 LL |     i %= 0;
    |     ^^^^^^ attempt to calculate the remainder of `_` with a divisor of zero
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:9:5
+  --> $DIR/integer_arithmetic.rs:16:5
    |
 LL |     1 + i;
    |     ^^^^^
@@ -21,146 +21,146 @@ LL |     1 + i;
    = note: `-D clippy::integer-arithmetic` implied by `-D warnings`
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:10:5
+  --> $DIR/integer_arithmetic.rs:17:5
    |
 LL |     i * 2;
    |     ^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:11:5
+  --> $DIR/integer_arithmetic.rs:18:5
    |
 LL | /     1 %
 LL | |     i / 2; // no error, this is part of the expression in the preceding line
    | |_____^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:13:5
+  --> $DIR/integer_arithmetic.rs:20:5
    |
 LL |     i - 2 + 2 - i;
    |     ^^^^^^^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:14:5
+  --> $DIR/integer_arithmetic.rs:21:5
    |
 LL |     -i;
    |     ^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:15:5
+  --> $DIR/integer_arithmetic.rs:22:5
    |
 LL |     i >> 1;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:16:5
+  --> $DIR/integer_arithmetic.rs:23:5
    |
 LL |     i << 1;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:26:5
+  --> $DIR/integer_arithmetic.rs:33:5
    |
 LL |     i += 1;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:27:5
+  --> $DIR/integer_arithmetic.rs:34:5
    |
 LL |     i -= 1;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:28:5
+  --> $DIR/integer_arithmetic.rs:35:5
    |
 LL |     i *= 2;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:31:11
+  --> $DIR/integer_arithmetic.rs:38:11
    |
 LL |     i /= -1;
    |           ^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:32:5
+  --> $DIR/integer_arithmetic.rs:39:5
    |
 LL |     i /= var1;
    |     ^^^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:33:5
+  --> $DIR/integer_arithmetic.rs:40:5
    |
 LL |     i /= var2;
    |     ^^^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:36:11
+  --> $DIR/integer_arithmetic.rs:43:11
    |
 LL |     i %= -1;
    |           ^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:37:5
+  --> $DIR/integer_arithmetic.rs:44:5
    |
 LL |     i %= var1;
    |     ^^^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:38:5
+  --> $DIR/integer_arithmetic.rs:45:5
    |
 LL |     i %= var2;
    |     ^^^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:39:5
+  --> $DIR/integer_arithmetic.rs:46:5
    |
 LL |     i <<= 3;
    |     ^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:40:5
+  --> $DIR/integer_arithmetic.rs:47:5
    |
 LL |     i >>= 2;
    |     ^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:82:5
+  --> $DIR/integer_arithmetic.rs:89:5
    |
 LL |     3 + &1;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:83:5
+  --> $DIR/integer_arithmetic.rs:90:5
    |
 LL |     &3 + 1;
    |     ^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:84:5
+  --> $DIR/integer_arithmetic.rs:91:5
    |
 LL |     &3 + &1;
    |     ^^^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:89:5
+  --> $DIR/integer_arithmetic.rs:96:5
    |
 LL |     a + x
    |     ^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:93:5
+  --> $DIR/integer_arithmetic.rs:100:5
    |
 LL |     x + y
    |     ^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:97:5
+  --> $DIR/integer_arithmetic.rs:104:5
    |
 LL |     x + y
    |     ^^^^^
 
 error: integer arithmetic detected
-  --> $DIR/integer_arithmetic.rs:101:5
+  --> $DIR/integer_arithmetic.rs:108:5
    |
 LL |     (&x + &y)
    |     ^^^^^^^^^
diff --git a/tests/ui/shadow.rs b/tests/ui/shadow.rs
index 1fa9fc749a9..ab7800a2110 100644
--- a/tests/ui/shadow.rs
+++ b/tests/ui/shadow.rs
@@ -1,6 +1,13 @@
+// aux-build:proc_macro_derive.rs
+
 #![warn(clippy::shadow_same, clippy::shadow_reuse, clippy::shadow_unrelated)]
 #![allow(clippy::let_unit_value)]
 
+extern crate proc_macro_derive;
+
+#[derive(proc_macro_derive::ShadowDerive)]
+pub struct Nothing;
+
 fn shadow_same() {
     let x = 1;
     let x = x;
diff --git a/tests/ui/shadow.stderr b/tests/ui/shadow.stderr
index c3d7bc2a536..92bb937d086 100644
--- a/tests/ui/shadow.stderr
+++ b/tests/ui/shadow.stderr
@@ -1,278 +1,278 @@
 error: `x` is shadowed by itself in `x`
-  --> $DIR/shadow.rs:6:9
+  --> $DIR/shadow.rs:13:9
    |
 LL |     let x = x;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:5:9
+  --> $DIR/shadow.rs:12:9
    |
 LL |     let x = 1;
    |         ^
    = note: `-D clippy::shadow-same` implied by `-D warnings`
 
 error: `mut x` is shadowed by itself in `&x`
-  --> $DIR/shadow.rs:7:13
+  --> $DIR/shadow.rs:14:13
    |
 LL |     let mut x = &x;
    |             ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:6:9
+  --> $DIR/shadow.rs:13:9
    |
 LL |     let x = x;
    |         ^
 
 error: `x` is shadowed by itself in `&mut x`
-  --> $DIR/shadow.rs:8:9
+  --> $DIR/shadow.rs:15:9
    |
 LL |     let x = &mut x;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:7:9
+  --> $DIR/shadow.rs:14:9
    |
 LL |     let mut x = &x;
    |         ^^^^^
 
 error: `x` is shadowed by itself in `*x`
-  --> $DIR/shadow.rs:9:9
+  --> $DIR/shadow.rs:16:9
    |
 LL |     let x = *x;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:8:9
+  --> $DIR/shadow.rs:15:9
    |
 LL |     let x = &mut x;
    |         ^
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:14:9
+  --> $DIR/shadow.rs:21:9
    |
 LL |     let x = x.0;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:13:9
+  --> $DIR/shadow.rs:20:9
    |
 LL |     let x = ([[0]], ());
    |         ^
    = note: `-D clippy::shadow-reuse` implied by `-D warnings`
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:15:9
+  --> $DIR/shadow.rs:22:9
    |
 LL |     let x = x[0];
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:14:9
+  --> $DIR/shadow.rs:21:9
    |
 LL |     let x = x.0;
    |         ^
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:16:10
+  --> $DIR/shadow.rs:23:10
    |
 LL |     let [x] = x;
    |          ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:15:9
+  --> $DIR/shadow.rs:22:9
    |
 LL |     let x = x[0];
    |         ^
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:17:9
+  --> $DIR/shadow.rs:24:9
    |
 LL |     let x = Some(x);
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:16:10
+  --> $DIR/shadow.rs:23:10
    |
 LL |     let [x] = x;
    |          ^
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:18:9
+  --> $DIR/shadow.rs:25:9
    |
 LL |     let x = foo(x);
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:17:9
+  --> $DIR/shadow.rs:24:9
    |
 LL |     let x = Some(x);
    |         ^
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:19:9
+  --> $DIR/shadow.rs:26:9
    |
 LL |     let x = || x;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:18:9
+  --> $DIR/shadow.rs:25:9
    |
 LL |     let x = foo(x);
    |         ^
 
 error: `x` is shadowed
-  --> $DIR/shadow.rs:20:9
+  --> $DIR/shadow.rs:27:9
    |
 LL |     let x = Some(1).map(|_| x)?;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:19:9
+  --> $DIR/shadow.rs:26:9
    |
 LL |     let x = || x;
    |         ^
 
 error: `y` is shadowed
-  --> $DIR/shadow.rs:22:9
+  --> $DIR/shadow.rs:29:9
    |
 LL |     let y = match y {
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:21:9
+  --> $DIR/shadow.rs:28:9
    |
 LL |     let y = 1;
    |         ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:31:9
+  --> $DIR/shadow.rs:38:9
    |
 LL |     let x = 2;
    |         ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:30:9
+  --> $DIR/shadow.rs:37:9
    |
 LL |     let x = 1;
    |         ^
    = note: `-D clippy::shadow-unrelated` implied by `-D warnings`
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:36:13
+  --> $DIR/shadow.rs:43:13
    |
 LL |         let x = 1;
    |             ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:35:10
+  --> $DIR/shadow.rs:42:10
    |
 LL |     fn f(x: u32) {
    |          ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:41:14
+  --> $DIR/shadow.rs:48:14
    |
 LL |         Some(x) => {
    |              ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:38:9
+  --> $DIR/shadow.rs:45:9
    |
 LL |     let x = 1;
    |         ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:42:17
+  --> $DIR/shadow.rs:49:17
    |
 LL |             let x = 1;
    |                 ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:41:14
+  --> $DIR/shadow.rs:48:14
    |
 LL |         Some(x) => {
    |              ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:46:17
+  --> $DIR/shadow.rs:53:17
    |
 LL |     if let Some(x) = Some(1) {}
    |                 ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:38:9
+  --> $DIR/shadow.rs:45:9
    |
 LL |     let x = 1;
    |         ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:47:20
+  --> $DIR/shadow.rs:54:20
    |
 LL |     while let Some(x) = Some(1) {}
    |                    ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:38:9
+  --> $DIR/shadow.rs:45:9
    |
 LL |     let x = 1;
    |         ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:48:15
+  --> $DIR/shadow.rs:55:15
    |
 LL |     let _ = |[x]: [u32; 1]| {
    |               ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:38:9
+  --> $DIR/shadow.rs:45:9
    |
 LL |     let x = 1;
    |         ^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:49:13
+  --> $DIR/shadow.rs:56:13
    |
 LL |         let x = 1;
    |             ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:48:15
+  --> $DIR/shadow.rs:55:15
    |
 LL |     let _ = |[x]: [u32; 1]| {
    |               ^
 
 error: `y` is shadowed
-  --> $DIR/shadow.rs:52:17
+  --> $DIR/shadow.rs:59:17
    |
 LL |     if let Some(y) = y {}
    |                 ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:51:9
+  --> $DIR/shadow.rs:58:9
    |
 LL |     let y = Some(1);
    |         ^
 
 error: `_b` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:88:9
+  --> $DIR/shadow.rs:95:9
    |
 LL |     let _b = _a;
    |         ^^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:87:28
+  --> $DIR/shadow.rs:94:28
    |
 LL | pub async fn foo2(_a: i32, _b: i64) {
    |                            ^^
 
 error: `x` shadows a previous, unrelated binding
-  --> $DIR/shadow.rs:94:21
+  --> $DIR/shadow.rs:101:21
    |
 LL |         if let Some(x) = Some(1) { x } else { 1 }
    |                     ^
    |
 note: previous binding is here
-  --> $DIR/shadow.rs:93:13
+  --> $DIR/shadow.rs:100:13
    |
 LL |         let x = 1;
    |             ^