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Fix the tests with libc 0.2.49 and Rust 1.33.0 #1033

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merged 4 commits into from
Mar 4, 2019
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Fix the tests with libc 0.2.49 and Rust 1.33.0 #1033

merged 4 commits into from
Mar 4, 2019

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@asomers asomers commented Mar 1, 2019

Several symbols are now marked as deprecated on OSX.

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asomers commented Mar 1, 2019

This should fix PR #1031

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asomers commented Mar 1, 2019

Can one of the @nix-rust/nix-maintainers with an OSX machine please verify whether Nix 0.13.0 can even build with libc 0.2.49?

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asomers commented Mar 1, 2019

Ok, I'm stumped. Why didn't the #[allow(deprecated)] fix the tests on OSX?

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Susurrus commented Mar 1, 2019 via email

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asomers commented Mar 1, 2019

That would indeed be helpful. But don't bother with my first question; 0.13.0 should still work fine, because we only #[deny(warnings)] during #[cfg(test)].

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asomers commented Mar 3, 2019

Ok, I'm an idiot. I never actually committed the important part.

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asomers commented Mar 3, 2019 •
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The Linux failure looks like a regression in Cargo 1.33.0. I'll fix it.

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asomers commented Mar 4, 2019

It looks like Cargo <= 1.32.0 would create a new thread for every test, even if --test-threads=1. And in-between tests it would destroy the test thread and recreate it. But Cargo 1.33.0 skips creating a new thread when --test-threads=1. And even if --test-threads=1, it reuses threads for multiple tests. This has exposed a failure to teardown some per-thread data in one of our unit tests.

Weirdly, this is a case where --test-threads=1 is more likely to make the test fail.

@asomers asomers mentioned this pull request Mar 4, 2019
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asomers added 4 commits March 3, 2019 20:30
@asomers
Fix the build on OSX with libc 0.2.49
04e7551 
Several symbols are now marked as deprecated on OSX.  Fix the build by
marking these symbols' Nix wrappers as deprecated, too.
@asomers
Fix test_thread_signal* test failures with Cargo 1.33.0
3453a8c 
Previous versions of Cargo would create and destroy a new thread for
each test.  Cargo 1.33.0 instead creates a thread pool and reuses the
same thread for multiple tests.  Some Nix tests that changed the
per-thread sigmask began to fail as a result, because they didn't do any
cleanup.

The easiest solution is to spawn a new thread for each of those tests.
@asomers
Delete a useless unit test that never did anything.
719a040
@asomers
Reenable test_sigwait on OSX
439b930 
It was disabled long ago and nobody remembered to reenable it.  I'm
guessing it's fixed by now.
@asomers asomers changed the title Fix the build on OSX with libc 0.2.49 Fix the tests with libc 0.2.49 and Rust 1.33.0 Mar 4, 2019
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asomers commented Mar 4, 2019

bors r+

bors bot added a commit that referenced this pull request Mar 4, 2019
@bors @asomers
Merge #1033
6e94c3c 
1033: Fix the tests with libc 0.2.49 and Rust 1.33.0 r=asomers a=asomers

Several symbols are now marked as deprecated on OSX.

Co-authored-by: Alan Somers <asomers@gmail.com>
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bors bot commented Mar 4, 2019

Build succeeded

@bors bors bot merged commit 439b930 into nix-rust:master Mar 4, 2019
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@asomers @Susurrus