std: Ignore dtors_in_dtors_in_dtors on OSX #31292
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This test has been deadlocking and causing problems on the bots basically since its inception. Some memory safety issues were fixed in 987dc84, but the deadlocks remained afterwards unfortunately. After some investigation, I've concluded that this is just a situation where OSX is not guaranteed to run destructors. The fix in 987dc84 observed that OSX was rewriting the backing TLS memory to its initial state during destruction while we weren't looking, and this would have the effect of canceling the destructors of any other initialized TLS slots. While very difficult to pin down, this is basically what I assume is happening here, so there doesn't seem to really be anythig we can do to ensure the test robustly passes on OSX, so just ignore it for now.
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r? @aturon This makes me sad |
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Super sad. @bors: r+ |
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📌 Commit b960de0 has been approved by |
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@bors: rollup |
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⌛ Testing commit b960de0 with merge 9f64d1d... |
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💔 Test failed - auto-linux-cross-opt |
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@bors: retry On Fri, Jan 29, 2016 at 9:43 PM, bors [email protected] wrote:
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Manishearth
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…dtors, r=aturon This test has been deadlocking and causing problems on the bots basically since its inception. Some memory safety issues were fixed in 987dc84, but the deadlocks remained afterwards unfortunately. After some investigation, I've concluded that this is just a situation where OSX is not guaranteed to run destructors. The fix in 987dc84 observed that OSX was rewriting the backing TLS memory to its initial state during destruction while we weren't looking, and this would have the effect of canceling the destructors of any other initialized TLS slots. While very difficult to pin down, this is basically what I assume is happening here, so there doesn't seem to really be anythig we can do to ensure the test robustly passes on OSX, so just ignore it for now.
bors
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that referenced
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Jan 30, 2016
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This test has been deadlocking and causing problems on the bots basically since
its inception. Some memory safety issues were fixed in 987dc84, but the
deadlocks remained afterwards unfortunately.
After some investigation, I've concluded that this is just a situation where OSX
is not guaranteed to run destructors. The fix in 987dc84 observed that OSX was
rewriting the backing TLS memory to its initial state during destruction while
we weren't looking, and this would have the effect of canceling the destructors
of any other initialized TLS slots.
While very difficult to pin down, this is basically what I assume is happening
here, so there doesn't seem to really be anythig we can do to ensure the test
robustly passes on OSX, so just ignore it for now.