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check::method - unify receivers before normalizing method signatures #45890

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merged 1 commit into from
Nov 13, 2017

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@arielb1 arielb1 commented Nov 9, 2017

Normalizing method signatures can unify inference variables, which can
cause receiver unification to fail. Unify the receivers first to avoid
that.

Fixes #36701.
Fixes #45801.
Fixes #45855.

r? @eddyb

beta-nominating because #43880 made this ICE happen in more cases (the code in that issue ICEs post-#43880 only, but the unit test here ICEs on all versions).

Normalizing method signatures can unify inference variables, which can
cause receiver unification to fail. Unify the receivers first to avoid
that.

Fixes rust-lang#36701.
Fixes rust-lang#45801.
Fixes rust-lang#45855.
@arielb1 arielb1 added the beta-nominated Nominated for backporting to the compiler in the beta channel. label Nov 9, 2017
@nikomatsakis nikomatsakis added the beta-accepted Accepted for backporting to the compiler in the beta channel. label Nov 9, 2017
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Marking as beta-accepted. Regression, fix looks safe and targeted.

@kennytm kennytm added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Nov 10, 2017
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eddyb commented Nov 12, 2017

@bors r+

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bors commented Nov 12, 2017

📌 Commit 5901f1c has been approved by eddyb

@kennytm kennytm added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 12, 2017
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bors commented Nov 13, 2017

⌛ Testing commit 5901f1c with merge 8efbf7a...

bors added a commit that referenced this pull request Nov 13, 2017
check::method - unify receivers before normalizing method signatures

Normalizing method signatures can unify inference variables, which can
cause receiver unification to fail. Unify the receivers first to avoid
that.

Fixes #36701.
Fixes #45801.
Fixes #45855.

r? @eddyb

beta-nominating because #43880 made this ICE happen in more cases (the code in that issue ICEs post-#43880 only, but the unit test here ICEs on all versions).
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bors commented Nov 13, 2017

☀️ Test successful - status-appveyor, status-travis
Approved by: eddyb
Pushing 8efbf7a to master...

@bors bors merged commit 5901f1c into rust-lang:master Nov 13, 2017
arielb1 pushed a commit to arielb1/rust that referenced this pull request Nov 14, 2017
check::method - unify receivers before normalizing method signatures

Normalizing method signatures can unify inference variables, which can
cause receiver unification to fail. Unify the receivers first to avoid
that.

Fixes rust-lang#36701.
Fixes rust-lang#45801.
Fixes rust-lang#45855.

r? @eddyb

beta-nominating because rust-lang#43880 made this ICE happen in more cases (the code in that issue ICEs post-rust-lang#43880 only, but the unit test here ICEs on all versions).
@arielb1 arielb1 mentioned this pull request Nov 14, 2017
bors added a commit that referenced this pull request Nov 14, 2017
@nikomatsakis nikomatsakis removed the beta-nominated Nominated for backporting to the compiler in the beta channel. label Nov 16, 2017
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5 participants