bjoernager/rust
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Avoid unnecessary String::clone

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This commit is contained in:
lrh2000 2021-07-09 21:00:51 +08:00
parent cda90f5541
commit 0cb6f07ef2
1 changed files with 4 additions and 4 deletions
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8
compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
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@ -1314,9 +1314,9 @@ struct TupleMemberDescriptionFactory<'tcx> {
impl<'tcx> TupleMemberDescriptionFactory<'tcx> { impl<'tcx> TupleMemberDescriptionFactory<'tcx> {
fn create_member_descriptions(&self, cx: &CodegenCx<'ll, 'tcx>) -> Vec<MemberDescription<'ll>> { fn create_member_descriptions(&self, cx: &CodegenCx<'ll, 'tcx>) -> Vec<MemberDescription<'ll>> {
let capture_names = match *self.ty.kind() { let mut capture_names = match *self.ty.kind() {
ty::Generator(def_id, ..) | ty::Closure(def_id, ..) => { ty::Generator(def_id, ..) | ty::Closure(def_id, ..) => {
Some(closure_saved_names_of_captured_variables(cx.tcx, def_id)) Some(closure_saved_names_of_captured_variables(cx.tcx, def_id).into_iter())
} }
_ => None, _ => None,
}; };
@ -1326,8 +1326,8 @@ impl<'tcx> TupleMemberDescriptionFactory<'tcx> {
.enumerate() .enumerate()
.map(|(i, &component_type)| { .map(|(i, &component_type)| {
let (size, align) = cx.size_and_align_of(component_type); let (size, align) = cx.size_and_align_of(component_type);
let name = if let Some(names) = capture_names.as_ref() { let name = if let Some(names) = capture_names.as_mut() {
names[i].clone() names.next().unwrap()
} else { } else {
format!("__{}", i) format!("__{}", i)
}; };