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Explain that ? converts the error type using From - #60924

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rust-lang:masterfrom
estebank:try-msg
May 19, 2019
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Explain that ? converts the error type using From#60924
bors merged 1 commit into
rust-lang:masterfrom
estebank:try-msg

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@estebank

@estebankestebank commented May 17, 2019

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Fix#60917.

@rust-highfive

rust-highfive commented May 17, 2019

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r? @petrochenkov

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@rust-highfiverust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label May 17, 2019
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@cuviper

cuviper commented May 17, 2019

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FWIW, I'm experimenting with using Into instead in #60796, although it doesn't look promising. I'm not sure if type inference can be improved to avoid massive breaking changes.

@estebank

estebank commented May 17, 2019•
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@cuviper the regression on error messages should make it obvious when hacks like this are in use. I believe the weird error you note in that PR is partly one of these cases.

sunjay
sunjay approved these changes May 17, 2019
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Awesome! Thank you Esteban! ❤️

@Centril

Centril commented May 17, 2019

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I'm not sure if type inference can be improved to avoid massive breaking changes.

Scheduled a try build for crater.

@petrochenkov

petrochenkov commented May 17, 2019

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@bors r+ rollup

@bors

bors commented May 17, 2019

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📌 Commit 65b7319 has been approved by petrochenkov

@borsbors 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 May 17, 2019
Centril added a commit to Centril/rust that referenced this pull request May 19, 2019
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Rollup merge ofrust-lang#60924- estebank:try-msg, r=petrochenkov
80d372f
Explain that ? converts the error type using From
Fixrust-lang#60917.
@CentrilCentril mentioned this pull request May 19, 2019
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bors added a commit that referenced this pull request May 19, 2019
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Auto merge of#60949- Centril:rollup-f918e1v, r=Centril
26ab324
Rollup of 8 pull requests
Successful merges:
- #60370 (Mark core::alloc::Layout::from_size_align_unchecked const)
- #60678 (Stabilize vecdeque_rotate)
- #60924 (Explain that ? converts the error type using From)
- #60931 (Use iter() for iterating arrays by slice)
- #60934 (Declare DefIndex with the newtype_index macro)
- #60943 (fix copy-paste typo in docs for ptr::read_volatile)
- #60945 (Simplify BufRead::fill_buf doc example using NLL)
- #60947 (Fix typos in docs of GlobalAlloc)
Failed merges:
r? @ghost
@bors

bors commented May 19, 2019

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☔ The latest upstream changes (presumably #60949) made this pull request unmergeable. Please resolve the merge conflicts.

@borsbors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels May 19, 2019
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bors merged commit 65b7319 into rust-lang:masterMay 19, 2019
@sunjay

sunjay commented May 19, 2019

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Bors was able to merge this even though it was unmergeable?

@tesuji

tesuji commented May 19, 2019

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The rollup #60949 contains this PR.

@estebank
estebank deleted the try-msg branch November 9, 2023 05:19
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Error message for question mark operator should message conversion

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