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Rollup merge of #82048 - mark-i-m:or-pat-type-ascription, r=petrochenkov

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or-patterns: disallow in `let` bindings

~~Blocked on https://github.com/rust-lang/rust/pull/81869~~

Disallows top-level or-patterns before type ascription. We want to reserve this syntactic space for possible future generalized type ascription.

r? ``@petrochenkov``
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Mara Bos 2021-03-09 09:05:20 +00:00 • committed by GitHub
commit 0d97f9b22a
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37 changed files with 605 additions and 358 deletions
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compiler/rustc_lint/src/unused.rs
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@ -872,7 +872,7 @@ impl EarlyLintPass for UnusedParens {
fn check_stmt(&mut self, cx: &EarlyContext<'_>, s: &ast::Stmt) {
if let StmtKind::Local(ref local) = s.kind {
self.check_unused_parens_pat(cx, &local.pat, false, false);
self.check_unused_parens_pat(cx, &local.pat, true, false);
}
<Self as UnusedDelimLint>::check_stmt(self, cx, s)