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add a Backtrace::disabled function #74490

Merged
merged 3 commits into from
Jul 23, 2020
Merged

add a Backtrace::disabled function #74490

merged 3 commits into from
Jul 23, 2020

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yaahc
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@yaahc yaahc commented Jul 18, 2020

Based upon @dtolnay's suggestion here: dtolnay/anyhow#97 (comment)

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r? @dtolnay

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 18, 2020
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yaahc commented Jul 18, 2020

@mystor has raised an alternative approach based on consts

impl Backtrace {
    const DISABLED: Backtrace;
}

https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=f2c4c0046aa51bb12686ad375909e0e2

src/libstd/backtrace.rs Outdated Show resolved Hide resolved
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dtolnay commented Jul 22, 2020

const DISABLED is fine too; I don't have a preference between those.

Co-authored-by: David Tolnay <dtolnay@gmail.com>
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yaahc commented Jul 23, 2020

I think making this const fn solves the issue that const DISABLED was trying to solve, and so I'd prefer to have it be a fn to be consistent with capture and force_capture.

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dtolnay commented Jul 23, 2020

@bors r+ rollup

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bors commented Jul 23, 2020

📌 Commit 50347b8 has been approved by dtolnay

@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 Jul 23, 2020
bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 23, 2020
…arth

Rollup of 8 pull requests

Successful merges:

 - rust-lang#74141 (libstd/libcore: fix various typos)
 - rust-lang#74490 (add a Backtrace::disabled function)
 - rust-lang#74548 (one more Path::with_extension example, to demonstrate behavior)
 - rust-lang#74587 (Prefer constant over function)
 - rust-lang#74606 (Remove Linux workarounds for missing CLOEXEC support)
 - rust-lang#74637 (Make str point to primitive page)
 - rust-lang#74654 (require type defaults to be after const generic parameters)
 - rust-lang#74659 (Improve codegen for unchecked float casts on wasm)

Failed merges:

r? @ghost
@bors bors merged commit f98c77c into rust-lang:master Jul 23, 2020
@yaahc yaahc mentioned this pull request Jul 27, 2022
@cuviper cuviper added this to the 1.47.0 milestone May 2, 2024
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5 participants