diff --git a/clippy_lints/src/casts/borrow_as_ptr.rs b/clippy_lints/src/casts/borrow_as_ptr.rs index 294d22d34de..e93f2765337 100644 --- a/clippy_lints/src/casts/borrow_as_ptr.rs +++ b/clippy_lints/src/casts/borrow_as_ptr.rs @@ -1,6 +1,8 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use std::ops::ControlFlow; + use clippy_utils::is_no_std_crate; use clippy_utils::source::snippet_with_context; +use clippy_utils::{diagnostics::span_lint_and_sugg, visitors::for_each_unconsumed_temporary}; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, Ty, TyKind}; use rustc_lint::LateContext; @@ -23,6 +25,10 @@ pub(super) fn check<'tcx>( }; let mut app = Applicability::MachineApplicable; let snip = snippet_with_context(cx, e.span, cast_expr.span.ctxt(), "..", &mut app).0; + // Fix #9884 + if for_each_unconsumed_temporary(cx, expr, |_| ControlFlow::Break(true)).is_break() { + return; + } span_lint_and_sugg( cx, diff --git a/tests/ui/borrow_as_ptr.fixed b/tests/ui/borrow_as_ptr.fixed index 3f440ce0045..996cc3650ff 100644 --- a/tests/ui/borrow_as_ptr.fixed +++ b/tests/ui/borrow_as_ptr.fixed @@ -1,9 +1,18 @@ //@run-rustfix #![warn(clippy::borrow_as_ptr)] +#![allow(clippy::useless_vec)] + +fn a() -> i32 { + 0 +} fn main() { let val = 1; let _p = std::ptr::addr_of!(val); + let _p = &0 as *const i32; + let _p = &a() as *const i32; + let vec = vec![1]; + let _p = &vec.len() as *const usize; let mut val_mut = 1; let _p_mut = std::ptr::addr_of_mut!(val_mut); diff --git a/tests/ui/borrow_as_ptr.rs b/tests/ui/borrow_as_ptr.rs index c1ca9180eef..5eafaeb2fc3 100644 --- a/tests/ui/borrow_as_ptr.rs +++ b/tests/ui/borrow_as_ptr.rs @@ -1,9 +1,18 @@ //@run-rustfix #![warn(clippy::borrow_as_ptr)] +#![allow(clippy::useless_vec)] + +fn a() -> i32 { + 0 +} fn main() { let val = 1; let _p = &val as *const i32; + let _p = &0 as *const i32; + let _p = &a() as *const i32; + let vec = vec![1]; + let _p = &vec.len() as *const usize; let mut val_mut = 1; let _p_mut = &mut val_mut as *mut i32; diff --git a/tests/ui/borrow_as_ptr.stderr b/tests/ui/borrow_as_ptr.stderr index be1ed733056..c9990bb6f22 100644 --- a/tests/ui/borrow_as_ptr.stderr +++ b/tests/ui/borrow_as_ptr.stderr @@ -1,5 +1,5 @@ error: borrow as raw pointer - --> $DIR/borrow_as_ptr.rs:6:14 + --> $DIR/borrow_as_ptr.rs:11:14 | LL | let _p = &val as *const i32; | ^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::addr_of!(val)` @@ -7,7 +7,7 @@ LL | let _p = &val as *const i32; = note: `-D clippy::borrow-as-ptr` implied by `-D warnings` error: borrow as raw pointer - --> $DIR/borrow_as_ptr.rs:9:18 + --> $DIR/borrow_as_ptr.rs:18:18 | LL | let _p_mut = &mut val_mut as *mut i32; | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::addr_of_mut!(val_mut)`