Rollup merge of #89789 - jkugelman:must-use-thread-builder, r=joshtriplett

[rust.git] / src / tools / clippy / clippy_lints / src / mut_mut.rs

diff --git a/src/tools/clippy/clippy_lints/src/mut_mut.rs b/src/tools/clippy/clippy_lints/src/mut_mut.rs
index 610152a217f1e3dac93028b9b41a945f37b92468..7c4cac29ba8e8c699b7a5cfdeea61678f0a477ba 100644 (file)
--- a/src/tools/clippy/clippy_lints/src/mut_mut.rs
+++ b/src/tools/clippy/clippy_lints/src/mut_mut.rs
@@ -82,6 +82,10 @@ fn visit_expr(&mut self, expr: &'tcx hir::Expr<'_>) {
     }
 
     fn visit_ty(&mut self, ty: &'tcx hir::Ty<'_>) {
+        if in_external_macro(self.cx.sess(), ty.span) {
+            return;
+        }
+
         if let hir::TyKind::Rptr(
             _,
             hir::MutTy {