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Tweak type mismatch caused by break on tail expr #66101

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merged 1 commit into from
Nov 6, 2019

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estebank
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@estebank estebank commented Nov 5, 2019

When break; has a type mismatch because the Destination points at a tail
expression with an obligation flowing from a return type, point at the
return type.

Fix #39968.

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r? @matthewjasper

(rust_highfive has picked a reviewer for you, use r? to override)

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Nov 5, 2019
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r=me with comment addressed in some fashion.

src/librustc_typeck/check/expr.rs Outdated Show resolved Hide resolved
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Centril commented Nov 5, 2019

r? @Centril

When `break;` has a type mismatch because the `Destination` points at a tail
expression with an obligation flowing from a return type, point at the
return type.

Fix rust-lang#39968.
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estebank commented Nov 5, 2019

@bors r=Centril

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bors commented Nov 5, 2019

📌 Commit b0f258b has been approved by Centril

@bors bors 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 5, 2019
Centril added a commit to Centril/rust that referenced this pull request Nov 5, 2019
Tweak type mismatch caused by break on tail expr

When `break;` has a type mismatch because the `Destination` points at a tail
expression with an obligation flowing from a return type, point at the
return type.

Fix rust-lang#39968.
Centril added a commit to Centril/rust that referenced this pull request Nov 6, 2019
Tweak type mismatch caused by break on tail expr

When `break;` has a type mismatch because the `Destination` points at a tail
expression with an obligation flowing from a return type, point at the
return type.

Fix rust-lang#39968.
bors added a commit that referenced this pull request Nov 6, 2019
Rollup of 11 pull requests

Successful merges:

 - #65892 (Remove `PartialEq` and `Eq` from the `SpecialDerives`.)
 - #66014 (Show type parameter name and definition in type mismatch error messages )
 - #66027 (Move has_panic_handler to query)
 - #66054 (syntax: Avoid span arithmetic for delimiter tokens)
 - #66068 (use silent emitter for rustdoc highlighting pass)
 - #66081 (let caller of check_ptr_access_align control the error message)
 - #66093 (Do not ICE with a precision flag in formatting str and no format arguments)
 - #66098 (Detect `::` -> `:` typo when involving turbofish)
 - #66101 (Tweak type mismatch caused by break on tail expr)
 - #66106 (Fix typo in explanation of `E0080`)
 - #66115 (rustc: remove "GlobalMetaData" dead code from hir::map::definitions.)

Failed merges:

r? @ghost
@bors bors merged commit b0f258b into rust-lang:master Nov 6, 2019
@estebank estebank deleted the break-tail-e0308 branch November 9, 2023 05:18
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Specific Error Message or Note for Final Expression being Loop and Return not Unit
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