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Rollup merge of #42871 - llogiq:for_lowering_vs_clippy, r=arielb1

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change binding name of for loop lowering to appease clippy

With the latest change to for loop lowering (#42634), a `_next` binding was introduced.
Unfortunately, this [disturbs](https://github.com/Manishearth/rust-clippy/issues/1846) clippy's `used_underscore_binding` lint. This commit just renames the binding to `__next` so clippy will be happy. It should have no other effect.
This commit is contained in:
Corey Farwell 2017-06-26 23:34:10 -04:00 committed by GitHub
commit b1afcb6ae9
1 changed files with 6 additions and 6 deletions
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12
src/librustc/hir/lowering.rs
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@ -2170,12 +2170,12 @@ impl<'a> LoweringContext<'a> {
// let result = match ::std::iter::IntoIterator::into_iter(<head>) {
// mut iter => {
// [opt_ident]: loop {
// let mut _next;
// let mut __next;
// match ::std::iter::Iterator::next(&mut iter) {
// ::std::option::Option::Some(val) => _next = val,
// ::std::option::Option::Some(val) => __next = val,
// ::std::option::Option::None => break
// };
// let <pat> = _next;
// let <pat> = __next;
// StmtExpr(<body>);
// }
// }
@ -2188,7 +2188,7 @@ impl<'a> LoweringContext<'a> {
let iter = self.str_to_ident("iter");
let next_ident = self.str_to_ident("_next");
let next_ident = self.str_to_ident("__next");
let next_pat = self.pat_ident_binding_mode(e.span,
next_ident,
hir::BindByValue(hir::MutMutable));
@ -2237,13 +2237,13 @@ impl<'a> LoweringContext<'a> {
let next_expr = P(self.expr_ident(e.span, next_ident, next_pat.id));
// `let mut _next`
// `let mut __next`
let next_let = self.stmt_let_pat(e.span,
None,
next_pat,
hir::LocalSource::ForLoopDesugar);
// `let <pat> = _next`
// `let <pat> = __next`
let pat = self.lower_pat(pat);
let pat_let = self.stmt_let_pat(e.span,
Some(next_expr),