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1.45 beta backports #8335

Merged
merged 2 commits into from
Jun 5, 2020
Merged

1.45 beta backports #8335

merged 2 commits into from
Jun 5, 2020

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ehuss
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@ehuss ehuss commented Jun 5, 2020

Beta backports for:

bors added 2 commits June 5, 2020 09:20
Fix fingerprinting for lld on Windows with dylib.

This fixes an issue where if `lld` is used on Windows, dynamic libraries will never be treated as "fresh". This is a regression from rust-lang#8210 where Cargo is expecting export files to be created, but lld does not create these.

The solution is to ignore "Auxiliary" files in fingerprinting, which AFAIK aren't really needed (only the primary output files really matter).

Fixes rust-lang#8284
Don't hash executable filenames on apple platforms.

Due to some recent changes to the backtrace crate, backtraces on apple platforms haven't been working (they are missing line/filename information). The reason is that previously libbacktrace would hunt through the directory for any matching file in the `.dSYM` directory. The new implementation expects a file matching the executable name exactly (which no longer includes the hash because Cargo renames it).

The solution here is to not include a hash in the executable filename. This matches the behavior on Windows which does it for a similar reason (paths are embedded in pdb files).

The downside is that switching between different settings (like different features) causes Cargo to rebuild the binary each time.  I don't think this is a particularly common use case, at least I've not heard any complaints about this behavior on Windows.

Fixes rust-lang/rust#72550
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⚠️ Warning ⚠️

  • Pull requests are usually filed against the master branch for this repo, but this one is against rust-1.45.0. Please double check that you specified the right target!

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jun 5, 2020
@ehuss ehuss mentioned this pull request Jun 5, 2020
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@bors: r+

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bors commented Jun 5, 2020

📌 Commit fcfb13c has been approved by alexcrichton

@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 Jun 5, 2020
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bors commented Jun 5, 2020

⌛ Testing commit fcfb13c with merge c83cdc6...

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bors commented Jun 5, 2020

☀️ Test successful - checks-azure
Approved by: alexcrichton
Pushing c83cdc6 to rust-1.45.0...

@bors bors merged commit c83cdc6 into rust-lang:rust-1.45.0 Jun 5, 2020
bors added a commit that referenced this pull request Jun 11, 2020
1.44.1 stable backports

Tried to duplicate #8335, though had to manually adjust 3b9e8dc4c1dc6a6ec714acb6a97b4f7cffda1176 (cherry-pick of #8329) as it had a merge conflict.

Stable backports for:

* #8329 — Don't hash executable filenames on apple platforms. (fix macos backtraces)
@ehuss ehuss added this to the 1.45.0 milestone Feb 6, 2022
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4 participants