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Avoid type-checking addition and indexing twice.#40863

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eddyb:coerce-only-once
Apr 6, 2017
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Avoid type-checking addition and indexing twice.#40863
bors merged 1 commit intorust-lang:masterfrom
eddyb:coerce-only-once

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@eddyb eddyb commented Mar 27, 2017

Fixes #40610 by moving the common check_expr_coercable_to_type call before the error reporting logic for binops and removing the one from check_str_addition.
Fixes #40861 by removing an unnecessary check_expr_coercable_to_type call.

@eddyb eddyb added the beta-nominated Nominated for backporting to the compiler in the beta channel. label Mar 27, 2017
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rust-highfive commented Mar 27, 2017

r? @pnkfelix

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arielb1 commented Mar 27, 2017

@bors r+

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bors commented Mar 27, 2017

📌 Commit 112f36a has been approved by arielb1

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eddyb commented Mar 27, 2017

@bors r- Travis failed (I'll investigate later)

@nikomatsakis nikomatsakis added the beta-accepted Accepted for backporting to the compiler in the beta channel. label Apr 4, 2017
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nikomatsakis commented Apr 4, 2017

Accepting for beta, once @eddyb fixes travis failures.

Small patch, regression.

cc @rust-lang/compiler

@alexcrichton alexcrichton mentioned this pull request Apr 4, 2017
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bors added a commit that referenced this pull request Apr 5, 2017
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Auto merge of #41071 - alexcrichton:beta-next, r=alexcrichton
ca3d118 
[beta] Backport accepted nominations

This is a backport of

* #40813
* #40849

This also includes #41069

Finally, this includes a bump to beta .3.

This is all current nominations except #40863, which is not passing tests yet.
@eddyb eddyb force-pushed the coerce-only-once branch from 112f36a to edc7f9a Compare April 6, 2017 18:42
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eddyb commented Apr 6, 2017

I suspect there's another bug elsewhere but at least I hope I can make this work.

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eddyb commented Apr 6, 2017
View reviewed changes
src/librustc_typeck/check/op.rs
// see `NB` above
self.check_expr_coercable_to_type(rhs_expr, rhs_ty_var);

(rhs_ty_var, return_ty)
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Tests weren't passing locally (actually, libcollections wasn't building at all after a rebase) when rhs_ty_var was replaced with rhs_ty.

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eddyb commented Apr 6, 2017

@bors r=arielb1

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bors commented Apr 6, 2017

📌 Commit edc7f9a has been approved by arielb1

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eddyb commented Apr 6, 2017

cc @alexcrichton This should be ready for backport now, apologies for the delay.

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bors commented Apr 6, 2017

⌛ Testing commit edc7f9a with merge 50c1864...

bors added a commit that referenced this pull request Apr 6, 2017
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Auto merge of #40863 - eddyb:coerce-only-once, r=arielb1
50c1864 
Avoid type-checking addition and indexing twice.

Fixes #40610 by moving the common `check_expr_coercable_to_type` call before the error reporting logic for binops and removing the one from `check_str_addition`.
Fixes #40861 by removing an unnecessary `check_expr_coercable_to_type` call.
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bors commented Apr 6, 2017

☀️ Test successful - status-appveyor, status-travis
Approved by: arielb1
Pushing 50c1864 to master...

@bors bors merged commit edc7f9a into rust-lang:master Apr 6, 2017
@eddyb eddyb deleted the coerce-only-once branch April 7, 2017 06:22
@alexcrichton alexcrichton mentioned this pull request Apr 20, 2017
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@alexcrichton alexcrichton removed the beta-nominated Nominated for backporting to the compiler in the beta channel. label Apr 20, 2017
bors added a commit that referenced this pull request Apr 21, 2017
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Auto merge of #41427 - alexcrichton:beta-next, r=alexcrichton
3cc1e39 
[beta] Final backports to beta

Backport of:

* #40863
* #41085
* #41354
* #41378
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