snapshot: avoid leaking inference vars #122189
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Some changes occurred to the core trait solver cc @rust-lang/initiative-trait-system-refactor |
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@bors try @rust-timer queue |
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snapshot: avoid leaking inference vars A first step towards fixing rust-lang#122188. There are still some FIXMEs left, most notably method probing. fixes rust-lang#122098 r? `@oli-obk`
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☀️ Try build successful - checks-actions |
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Finished benchmarking commit (970523a): comparison URL. Overall result: ❌ regressions - ACTION NEEDEDBenchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf. Next Steps: If you can justify the regressions found in this try perf run, please indicate this with @bors rollup=never Instruction countThis is a highly reliable metric that was used to determine the overall result at the top of this comment.
Max RSS (memory usage)ResultsThis is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 652.903s -> 647.701s (-0.80%) |
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| let r = f(&snapshot); | ||
| let no_leaks_data = R::mk_data_snapshot_end(self, no_leaks_data); | ||
| self.rollback_to(snapshot); | ||
| R::avoid_leaks(r, self, no_leaks_data) |
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Maybe it's sufficient to run this with debug assertions? Or is it usually odd cases that have no tests that leak infer vars?
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if we don't fudge TypeError we can get ICE. I would expect that this is the main cause of the regression here. Can add some inline attributes though to check whether it helps with anything
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@bors try @rust-timer queue |
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snapshot: avoid leaking inference vars A first step towards fixing rust-lang#122188. There are still some FIXMEs left, most notably method probing. fixes rust-lang#122098 r? `@oli-obk`
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☀️ Try build successful - checks-actions |
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Finished benchmarking commit (c740aa4): comparison URL. Overall result: ❌ regressions - no action neededBenchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf. @bors rollup=never Instruction countThis is a highly reliable metric that was used to determine the overall result at the top of this comment.
Max RSS (memory usage)ResultsThis is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 648.792s -> 648.87s (0.01%) |
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most other tests have a different root cause. I have not yet fixed method probing as that's non-trivial. Leaving that for future PRs |
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| if let Some(fudge_data) = fudge_data { | ||
| FudgeInference(fudge_data.fudge_inference(infcx, value)) | ||
| } else { | ||
| FudgeInference(value) |
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@bors r+ I wonder if we can come up with a scheme (that doesn't make all snapshot methods really annoying to use), which also prevents storing types into storage borrowed in the snapshot closure. |
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snapshot: avoid leaking inference vars A first step towards fixing rust-lang#122188. There are still some FIXMEs left, most notably method probing. fixes rust-lang#122098 r? `@oli-obk`
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The job Click to see the possible cause of the failure (guessed by this bot) |
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💔 Test failed - checks-actions |
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☔ The latest upstream changes (presumably #122832) made this pull request unmergeable. Please resolve the merge conflicts. |
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post sync |
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@lcnr any updates on this? thanks |
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A first step towards fixing #122188. There are still some FIXMEs left, most notably method probing.
fixes #122098
r? @oli-obk