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Fix ICE when compiling fn f<T: ?for<'a> Sized>() {} #39138

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Jan 21, 2017
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Fix ICE when compiling fn f<T: ?for<'a> Sized>() {} #39138

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1 change: 0 additions & 1 deletion src/librustc_typeck/collect.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1665,7 +1665,6 @@ fn is_unsized<'gcx: 'tcx, 'tcx>(astconv: &AstConv<'gcx, 'tcx>,
for ab in ast_bounds {
if let &hir::TraitTyParamBound(ref ptr, hir::TraitBoundModifier::Maybe) = ab {
if unbound.is_none() {
assert!(ptr.bound_lifetimes.is_empty());
unbound = Some(ptr.trait_ref.clone());
} else {
span_err!(tcx.sess, span, E0203,
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13 changes: 13 additions & 0 deletions src/test/run-pass/issue-39089.rs
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@@ -0,0 +1,13 @@
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

fn f<T: ?for<'a> Sized>() {}

fn main() {}