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Rollup merge of #108516 - clubby789:rustc-box-restrict, r=compiler-errors

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Restrict `#[rustc_box]` to `Box::new` calls

Currently, `#[rustc_box]` can be applied to any call expression with a single argument. This PR only allows it to be applied to calls to `Box::new`
This commit is contained in:
Matthias Krüger 2023-03-02 07:24:00 +01:00 • committed by GitHub
commit 5cf9c3422c
1 changed files with 5 additions and 8 deletions
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13
clippy_utils/src/higher.rs
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@ -287,15 +287,12 @@ impl<'a> VecArgs<'a> {
Some(VecArgs::Repeat(&args[0], &args[1]))
} else if match_def_path(cx, fun_def_id, &paths::SLICE_INTO_VEC) && args.len() == 1 {
// `vec![a, b, c]` case
if_chain! {
if let hir::ExprKind::Box(boxed) = args[0].kind;
if let hir::ExprKind::Array(args) = boxed.kind;
then {
return Some(VecArgs::Vec(args));
}
if let hir::ExprKind::Call(_, [arg]) = &args[0].kind
&& let hir::ExprKind::Array(args) = arg.kind {
Some(VecArgs::Vec(args))
} else {
None
}
None
} else if match_def_path(cx, fun_def_id, &paths::VEC_NEW) && args.is_empty() {
Some(VecArgs::Vec(&[]))
} else {