ccaa2f855e
If the infcx has observed other errors, then suppress both default type parameter fallback (which can be unreliable, as the full constraint set is not available) and errors related to unresovled variables (annoyingly, integer type variables cannot currently be unified with error, so that has to be a separate mechanism). Also add a flag to `infcx` to allow us to independently indicate when we have observed an error and hence should trigger this suppression mode.
28 lines
818 B
Rust
28 lines
818 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test that the resolve failure does not lead to downstream type errors.
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// See issue #31997.
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trait TheTrait { }
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fn closure<F, T>(x: F) -> Result<T, ()>
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where F: FnMut() -> T, T: TheTrait,
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{
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unimplemented!()
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}
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fn foo() -> Result<(), ()> {
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try!(closure(|| bar(0 as *mut _))); //~ ERROR unresolved name `bar`
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Ok(())
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}
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fn main() { }
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