Change:
Put (copies of?) coercematch{,calls} and related tests into run-pass-valgrind. Because our current testing infrastructure is not aggressive enough in checking that tests like this are actually behaving in a sound manner. spawned off of: (I did not attempt this in PR because I wanted to expedite landing the fix for the trans bug.)
clarified the situation to me: even if is not available on a host, the tests in will be run (just without checking them). So resolving this is probably just a matter of moving the tests over. (having said that, I am wary of the risk of injecting usage of will cause a PR to be inadvertently blocked, and thus I still want to wait to fix this until after PR lands.)
Triage: it looks like these two tests are not yet in . This should be easy to do, though which tests exactly are "related" isn't quite clear to me.
Triage: no news.

Discussion:
<ins> // Copyright 2014 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. // Check that coercions are propagated through match and if expressions. // pretty-expanded FIXME #23616 use std::boxed::Box; pub fn main() { let _: Box<[isize]> = if true { Box::new([1, 2, 3]) } else { Box::new([1]) }; let _: Box<[isize]> = match true { true => Box::new([1, 2, 3]), false => Box::new([1]) }; // Check we don't get over-keen at propagating coercions in the case of casts. let x = if true { 42 } else { 42u8 } as u16; let x = match true { true => 42, false => 42u8 } as u16; } </ins>

<ins> // Copyright 2014 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. // Check that coercions are propagated through match and if expressions. // pretty-expanded FIXME #23616 #![allow(unknown_features)] #![feature(box_syntax)] pub fn main() { let _: Box<[isize]> = if true { let b: Box<_> = box [1, 2, 3]; b } else { let b: Box<_> = box [1]; b }; let _: Box<[isize]> = match true { true => { let b: Box<_> = box [1, 2, 3]; b } false => { let b: Box<_> = box [1]; b } }; // Check we don't get over-keen at propagating coercions in the case of casts. let x = if true { 42 } else { 42u8 } as u16; let x = match true { true => 42, false => 42u8 } as u16; } </ins>

<del> // Copyright 2014 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. // Check that coercions are propagated through match and if expressions. // pretty-expanded FIXME #23616 use std::boxed::Box; pub fn main() { let _: Box<[isize]> = if true { Box::new([1, 2, 3]) } else { Box::new([1]) }; let _: Box<[isize]> = match true { true => Box::new([1, 2, 3]), false => Box::new([1]) }; // Check we don't get over-keen at propagating coercions in the case of casts. let x = if true { 42 } else { 42u8 } as u16; let x = match true { true => 42, false => 42u8 } as u16; } </del>

<del> // Copyright 2014 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. // Check that coercions are propagated through match and if expressions. // pretty-expanded FIXME #23616 #![allow(unknown_features)] #![feature(box_syntax)] pub fn main() { let _: Box<[isize]> = if true { let b: Box<_> = box [1, 2, 3]; b } else { let b: Box<_> = box [1]; b }; let _: Box<[isize]> = match true { true => { let b: Box<_> = box [1, 2, 3]; b } false => { let b: Box<_> = box [1]; b } }; // Check we don't get over-keen at propagating coercions in the case of casts. let x = if true { 42 } else { 42u8 } as u16; let x = match true { true => 42, false => 42u8 } as u16; } </del>