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Lint overlapping ranges as a separate pass #116751
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(rustbot has picked a reviewer for you, use r? to override) |
@bors try @rust-timer queue |
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…=<try> Lint overlapping ranges as a separate pass This reworks the [`overlapping_range_endpoints`](https://doc.rust-lang.org/beta/nightly-rustc/rustc_lint_defs/builtin/static.OVERLAPPING_RANGE_ENDPOINTS.html) lint. My motivations are: - It was annoying to have this lint entangled with the exhaustiveness algorithm, especially wrt librarification; - This makes the lint behave consistently. Here's the consistency story. Take the following matches: ```rust match (0u8, true) { (0..=10, true) => {} (10..20, true) => {} (10..20, false) => {} _ => {} } match (true, 0u8) { (true, 0..=10) => {} (true, 10..20) => {} (false, 10..20) => {} _ => {} } ``` There are two semantically consistent options: option 1 we lint all overlaps between the ranges, option 2 we only lint the overlaps that could actually occur (i.e. the ones with `true`). Option 1 is what this PR does. Option 2 is possible but would require the exhaustiveness algorithm to track more things for the sake of the lint. The status quo is that we're inconsistent between the two. Option 1 generates more false postives, but I prefer it from a maintainer's perspective. I do think the difference is minimal; cases where the difference is observable seem rare. This PR adds a separate pass, so this will have a perf impact. Let's see how bad, it looked ok locally.
☀️ Try build successful - checks-actions |
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r? compiler |
Finished benchmarking commit (600bb87): 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: 624.729s -> 625.048s (0.05%) |
As expected, consistent small regression on the pattern-heavy benchmarks. Feels worth it for how easier it'll make my life 😇 |
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#116734 got merged and uses a similar per-column traversal, so I factored that out. Let's check this doesn't affect perf. @bors try @rust-timer queue |
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…=<try> Lint overlapping ranges as a separate pass This reworks the [`overlapping_range_endpoints`](https://doc.rust-lang.org/beta/nightly-rustc/rustc_lint_defs/builtin/static.OVERLAPPING_RANGE_ENDPOINTS.html) lint. My motivations are: - It was annoying to have this lint entangled with the exhaustiveness algorithm, especially wrt librarification; - This makes the lint behave consistently. Here's the consistency story. Take the following matches: ```rust match (0u8, true) { (0..=10, true) => {} (10..20, true) => {} (10..20, false) => {} _ => {} } match (true, 0u8) { (true, 0..=10) => {} (true, 10..20) => {} (false, 10..20) => {} _ => {} } ``` There are two semantically consistent options: option 1 we lint all overlaps between the ranges, option 2 we only lint the overlaps that could actually occur (i.e. the ones with `true`). Option 1 is what this PR does. Option 2 is possible but would require the exhaustiveness algorithm to track more things for the sake of the lint. The status quo is that we're inconsistent between the two. Option 1 generates more false postives, but I prefer it from a maintainer's perspective. I do think the difference is minimal; cases where the difference is observable seem rare. This PR adds a separate pass, so this will have a perf impact. Let's see how bad, it looked ok locally.
☀️ Try build successful - checks-actions |
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Finished benchmarking commit (3bcf078): 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: 632.219s -> 629.702s (-0.40%) |
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@davidtwco Do you have capacity to review this? I can reroll reviewer selection if not |
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Apologies for the delay in getting to this, the false positives here are a shame, but given that were inconsistent before, I think it's okay. LGTM.
@bors r+ |
Thank you! |
☀️ Test successful - checks-actions |
Finished benchmarking commit (9d6d5d4): comparison URL. Overall result: ❌ regressions - ACTION NEEDEDNext Steps: If you can justify the regressions found in this perf run, please indicate this with @rustbot label: +perf-regression 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.
CyclesResultsThis 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.
Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 635.341s -> 636.748s (0.22%) |
74: Automated pull from upstream `master` r=tshepang a=github-actions[bot] This PR pulls the following changes from the upstream repository: * rust-lang/rust#117363 * rust-lang/rust#116405 * rust-lang/rust#117415 * rust-lang/rust#117414 * rust-lang/rust#117411 * rust-lang/rust#117403 * rust-lang/rust#117398 * rust-lang/rust#117396 * rust-lang/rust#117389 * rust-lang/rust#116862 * rust-lang/rust#117405 * rust-lang/rust#117395 * rust-lang/rust#117390 * rust-lang/rust#117383 * rust-lang/rust#117376 * rust-lang/rust#117370 * rust-lang/rust#117357 * rust-lang/rust#117356 * rust-lang/rust#117317 * rust-lang/rust#117132 * rust-lang/rust#117068 * rust-lang/rust#112463 * rust-lang/rust#117267 * rust-lang/rust#116939 * rust-lang/rust#117387 * rust-lang/rust#117385 * rust-lang/rust#117382 * rust-lang/rust#117371 * rust-lang/rust#117365 * rust-lang/rust#117350 * rust-lang/rust#117205 * rust-lang/rust#117177 * rust-lang/rust#117147 * rust-lang/rust#116485 * rust-lang/rust#117328 * rust-lang/rust#117332 * rust-lang/rust#117089 * rust-lang/rust#116733 * rust-lang/rust#116889 * rust-lang/rust#116270 * rust-lang/rust#117354 * rust-lang/rust#117337 * rust-lang/rust#117312 * rust-lang/rust#117082 * rust-lang/rust#117043 * rust-lang/rust#115968 * rust-lang/rust#117336 * rust-lang/rust#117325 * rust-lang/rust#117322 * rust-lang/rust#117259 * rust-lang/rust#117170 * rust-lang/rust#117335 * rust-lang/rust#117319 * rust-lang/rust#117316 * rust-lang/rust#117311 * rust-lang/rust#117162 * rust-lang/rust#115773 * rust-lang/rust#116447 * rust-lang/rust#117149 * rust-lang/rust#116240 * rust-lang/rust#117123 * rust-lang/rust#81746 * rust-lang/rust#117038 * rust-lang/rust#116609 * rust-lang/rust#117309 * rust-lang/rust#117277 * rust-lang/rust#117268 * rust-lang/rust#117256 * rust-lang/rust#117025 * rust-lang/rust#116945 * rust-lang/rust#116816 * rust-lang/rust#116739 * rust-lang/rust#116534 * rust-lang/rust#117253 * rust-lang/rust#117302 * rust-lang/rust#117197 * rust-lang/rust#116471 * rust-lang/rust#117294 * rust-lang/rust#117287 * rust-lang/rust#117281 * rust-lang/rust#117270 * rust-lang/rust#117247 * rust-lang/rust#117246 * rust-lang/rust#117212 * rust-lang/rust#116834 * rust-lang/rust#103208 * rust-lang/rust#117166 * rust-lang/rust#116751 * rust-lang/rust#116858 * rust-lang/rust#117272 * rust-lang/rust#117266 * rust-lang/rust#117262 * rust-lang/rust#117241 * rust-lang/rust#117240 * rust-lang/rust#116868 * rust-lang/rust#114998 * rust-lang/rust#116205 * rust-lang/rust#117260 * rust-lang/rust#116035 * rust-lang/rust#113183 * rust-lang/rust#117249 * rust-lang/rust#117243 * rust-lang/rust#117188 * rust-lang/rust#117114 * rust-lang/rust#117106 * rust-lang/rust#117032 * rust-lang/rust#116968 * rust-lang/rust#116581 * rust-lang/rust#117228 * rust-lang/rust#117221 * rust-lang/rust#117214 * rust-lang/rust#117207 * rust-lang/rust#117202 * rust-lang/rust#117194 * rust-lang/rust#117143 * rust-lang/rust#117095 * rust-lang/rust#116905 * rust-lang/rust#117171 * rust-lang/rust#113262 * rust-lang/rust#112875 * rust-lang/rust#116983 * rust-lang/rust#117148 * rust-lang/rust#117115 * rust-lang/rust#116818 * rust-lang/rust#115872 * rust-lang/rust#117193 * rust-lang/rust#117175 * rust-lang/rust#117009 * rust-lang/rust#117008 * rust-lang/rust#116931 * rust-lang/rust#116553 * rust-lang/rust#116401 * rust-lang/rust#117180 * rust-lang/rust#117173 * rust-lang/rust#117163 * rust-lang/rust#117159 * rust-lang/rust#117154 * rust-lang/rust#117152 * rust-lang/rust#117141 * rust-lang/rust#117111 * rust-lang/rust#117172 * rust-lang/rust#117168 * rust-lang/rust#117160 * rust-lang/rust#117158 * rust-lang/rust#117150 * rust-lang/rust#117136 * rust-lang/rust#117133 * rust-lang/rust#116801 * rust-lang/rust#117165 * rust-lang/rust#117113 * rust-lang/rust#117102 * rust-lang/rust#117076 * rust-lang/rust#116236 * rust-lang/rust#116993 * rust-lang/rust#117139 * rust-lang/rust#116482 * rust-lang/rust#115796 * rust-lang/rust#117135 * rust-lang/rust#117127 * rust-lang/rust#117010 * rust-lang/rust#116943 * rust-lang/rust#116841 * rust-lang/rust#116792 * rust-lang/rust#116714 * rust-lang/rust#116396 * rust-lang/rust#116094 * rust-lang/rust#117126 * rust-lang/rust#117105 * rust-lang/rust#117093 * rust-lang/rust#117092 * rust-lang/rust#117091 * rust-lang/rust#117081 * rust-lang/rust#116773 * rust-lang/rust#117124 * rust-lang/rust#116461 * rust-lang/rust#116435 * rust-lang/rust#116319 * rust-lang/rust#116238 * rust-lang/rust#116998 * rust-lang/rust#116300 * rust-lang/rust#117103 * rust-lang/rust#117086 * rust-lang/rust#117074 * rust-lang/rust#117070 * rust-lang/rust#117046 * rust-lang/rust#116859 * rust-lang/rust#107159 * rust-lang/rust#116033 * rust-lang/rust#107009 * rust-lang/rust#117087 * rust-lang/rust#117073 * rust-lang/rust#117064 * rust-lang/rust#117040 * rust-lang/rust#116978 * rust-lang/rust#116960 * rust-lang/rust#116837 * rust-lang/rust#116835 * rust-lang/rust#116849 * rust-lang/rust#117071 * rust-lang/rust#117069 * rust-lang/rust#117051 * rust-lang/rust#117049 * rust-lang/rust#117044 * rust-lang/rust#117042 * rust-lang/rust#105666 * rust-lang/rust#116606 * rust-lang/rust#117066 * rust-lang/rust#115324 * rust-lang/rust#117062 * rust-lang/rust#117000 * rust-lang/rust#117007 * rust-lang/rust#117018 * rust-lang/rust#116256 * rust-lang/rust#117041 * rust-lang/rust#117037 * rust-lang/rust#117034 * rust-lang/rust#116989 * rust-lang/rust#116985 * rust-lang/rust#116950 * rust-lang/rust#116956 * rust-lang/rust#116932 * rust-lang/rust#117031 * rust-lang/rust#117030 * rust-lang/rust#117028 * rust-lang/rust#117026 * rust-lang/rust#116992 * rust-lang/rust#116981 * rust-lang/rust#116955 * rust-lang/rust#116928 * rust-lang/rust#116312 * rust-lang/rust#116368 * rust-lang/rust#116922 * rust-lang/rust#117021 * rust-lang/rust#117020 * rust-lang/rust#117019 * rust-lang/rust#116975 * rust-lang/rust#106601 * rust-lang/rust#116734 * rust-lang/rust#117013 * rust-lang/rust#116995 * rust-lang/rust#116990 * rust-lang/rust#116974 * rust-lang/rust#116964 * rust-lang/rust#116961 * rust-lang/rust#116917 * rust-lang/rust#116911 * rust-lang/rust#114521 * rust-lang/rust#117011 * rust-lang/rust#116958 * rust-lang/rust#116951 * rust-lang/rust#116966 * rust-lang/rust#116965 * rust-lang/rust#116962 * rust-lang/rust#116946 * rust-lang/rust#116899 * rust-lang/rust#116785 * rust-lang/rust#116838 * rust-lang/rust#116875 * rust-lang/rust#116874 * rust-lang/rust#115214 * rust-lang/rust#116810 * rust-lang/rust#116940 * rust-lang/rust#116921 * rust-lang/rust#116906 * rust-lang/rust#116896 * rust-lang/rust#116650 * rust-lang/rust#116132 * rust-lang/rust#116037 * rust-lang/rust#116923 * rust-lang/rust#116912 * rust-lang/rust#116908 * rust-lang/rust#116883 * rust-lang/rust#116829 * rust-lang/rust#116795 * rust-lang/rust#116761 * rust-lang/rust#116663 * rust-lang/rust#114534 * rust-lang/rust#116402 * rust-lang/rust#116493 * rust-lang/rust#116046 * rust-lang/rust#116887 * rust-lang/rust#116885 * rust-lang/rust#116879 * rust-lang/rust#116870 * rust-lang/rust#116865 * rust-lang/rust#116856 * rust-lang/rust#116812 * rust-lang/rust#116815 * rust-lang/rust#116814 * rust-lang/rust#116713 * rust-lang/rust#116830 Co-authored-by: Matthias Krüger <matthias.krueger@famsik.de> Co-authored-by: antoyo <antoyo@users.noreply.github.com> Co-authored-by: Antoni Boucher <bouanto@zoho.com> Co-authored-by: bors <bors@rust-lang.org> Co-authored-by: Esteban Küber <esteban@kuber.com.ar> Co-authored-by: Kjetil Kjeka <kjetilkjeka@gmail.com> Co-authored-by: clubby789 <jamie@hill-daniel.co.uk> Co-authored-by: okaneco <47607823+okaneco@users.noreply.github.com> Co-authored-by: David Tolnay <dtolnay@gmail.com> Co-authored-by: Nadrieril <nadrieril+git@gmail.com> Co-authored-by: Celina G. Val <celinval@amazon.com> Co-authored-by: Ralf Jung <post@ralfj.de> Co-authored-by: Zalathar <Zalathar@users.noreply.github.com> Co-authored-by: Havard Eidnes <he@NetBSD.org> Co-authored-by: Jacob Pratt <jacob@jhpratt.dev> Co-authored-by: Kjetil Kjeka <kjetil@muybridge.com>
74: Automated pull from upstream `master` r=tshepang a=github-actions[bot] This PR pulls the following changes from the upstream repository: * rust-lang/rust#117363 * rust-lang/rust#116405 * rust-lang/rust#117415 * rust-lang/rust#117414 * rust-lang/rust#117411 * rust-lang/rust#117403 * rust-lang/rust#117398 * rust-lang/rust#117396 * rust-lang/rust#117389 * rust-lang/rust#116862 * rust-lang/rust#117405 * rust-lang/rust#117395 * rust-lang/rust#117390 * rust-lang/rust#117383 * rust-lang/rust#117376 * rust-lang/rust#117370 * rust-lang/rust#117357 * rust-lang/rust#117356 * rust-lang/rust#117317 * rust-lang/rust#117132 * rust-lang/rust#117068 * rust-lang/rust#112463 * rust-lang/rust#117267 * rust-lang/rust#116939 * rust-lang/rust#117387 * rust-lang/rust#117385 * rust-lang/rust#117382 * rust-lang/rust#117371 * rust-lang/rust#117365 * rust-lang/rust#117350 * rust-lang/rust#117205 * rust-lang/rust#117177 * rust-lang/rust#117147 * rust-lang/rust#116485 * rust-lang/rust#117328 * rust-lang/rust#117332 * rust-lang/rust#117089 * rust-lang/rust#116733 * rust-lang/rust#116889 * rust-lang/rust#116270 * rust-lang/rust#117354 * rust-lang/rust#117337 * rust-lang/rust#117312 * rust-lang/rust#117082 * rust-lang/rust#117043 * rust-lang/rust#115968 * rust-lang/rust#117336 * rust-lang/rust#117325 * rust-lang/rust#117322 * rust-lang/rust#117259 * rust-lang/rust#117170 * rust-lang/rust#117335 * rust-lang/rust#117319 * rust-lang/rust#117316 * rust-lang/rust#117311 * rust-lang/rust#117162 * rust-lang/rust#115773 * rust-lang/rust#116447 * rust-lang/rust#117149 * rust-lang/rust#116240 * rust-lang/rust#117123 * rust-lang/rust#81746 * rust-lang/rust#117038 * rust-lang/rust#116609 * rust-lang/rust#117309 * rust-lang/rust#117277 * rust-lang/rust#117268 * rust-lang/rust#117256 * rust-lang/rust#117025 * rust-lang/rust#116945 * rust-lang/rust#116816 * rust-lang/rust#116739 * rust-lang/rust#116534 * rust-lang/rust#117253 * rust-lang/rust#117302 * rust-lang/rust#117197 * rust-lang/rust#116471 * rust-lang/rust#117294 * rust-lang/rust#117287 * rust-lang/rust#117281 * rust-lang/rust#117270 * rust-lang/rust#117247 * rust-lang/rust#117246 * rust-lang/rust#117212 * rust-lang/rust#116834 * rust-lang/rust#103208 * rust-lang/rust#117166 * rust-lang/rust#116751 * rust-lang/rust#116858 * rust-lang/rust#117272 * rust-lang/rust#117266 * rust-lang/rust#117262 * rust-lang/rust#117241 * rust-lang/rust#117240 * rust-lang/rust#116868 * rust-lang/rust#114998 * rust-lang/rust#116205 * rust-lang/rust#117260 * rust-lang/rust#116035 * rust-lang/rust#113183 * rust-lang/rust#117249 * rust-lang/rust#117243 * rust-lang/rust#117188 * rust-lang/rust#117114 * rust-lang/rust#117106 * rust-lang/rust#117032 * rust-lang/rust#116968 * rust-lang/rust#116581 * rust-lang/rust#117228 * rust-lang/rust#117221 * rust-lang/rust#117214 * rust-lang/rust#117207 * rust-lang/rust#117202 * rust-lang/rust#117194 * rust-lang/rust#117143 * rust-lang/rust#117095 * rust-lang/rust#116905 * rust-lang/rust#117171 * rust-lang/rust#113262 * rust-lang/rust#112875 * rust-lang/rust#116983 * rust-lang/rust#117148 * rust-lang/rust#117115 * rust-lang/rust#116818 * rust-lang/rust#115872 * rust-lang/rust#117193 * rust-lang/rust#117175 * rust-lang/rust#117009 * rust-lang/rust#117008 * rust-lang/rust#116931 * rust-lang/rust#116553 * rust-lang/rust#116401 * rust-lang/rust#117180 * rust-lang/rust#117173 * rust-lang/rust#117163 * rust-lang/rust#117159 * rust-lang/rust#117154 * rust-lang/rust#117152 * rust-lang/rust#117141 * rust-lang/rust#117111 * rust-lang/rust#117172 * rust-lang/rust#117168 * rust-lang/rust#117160 * rust-lang/rust#117158 * rust-lang/rust#117150 * rust-lang/rust#117136 * rust-lang/rust#117133 * rust-lang/rust#116801 * rust-lang/rust#117165 * rust-lang/rust#117113 * rust-lang/rust#117102 * rust-lang/rust#117076 * rust-lang/rust#116236 * rust-lang/rust#116993 * rust-lang/rust#117139 * rust-lang/rust#116482 * rust-lang/rust#115796 * rust-lang/rust#117135 * rust-lang/rust#117127 * rust-lang/rust#117010 * rust-lang/rust#116943 * rust-lang/rust#116841 * rust-lang/rust#116792 * rust-lang/rust#116714 * rust-lang/rust#116396 * rust-lang/rust#116094 * rust-lang/rust#117126 * rust-lang/rust#117105 * rust-lang/rust#117093 * rust-lang/rust#117092 * rust-lang/rust#117091 * rust-lang/rust#117081 * rust-lang/rust#116773 * rust-lang/rust#117124 * rust-lang/rust#116461 * rust-lang/rust#116435 * rust-lang/rust#116319 * rust-lang/rust#116238 * rust-lang/rust#116998 * rust-lang/rust#116300 * rust-lang/rust#117103 * rust-lang/rust#117086 * rust-lang/rust#117074 * rust-lang/rust#117070 * rust-lang/rust#117046 * rust-lang/rust#116859 * rust-lang/rust#107159 * rust-lang/rust#116033 * rust-lang/rust#107009 * rust-lang/rust#117087 * rust-lang/rust#117073 * rust-lang/rust#117064 * rust-lang/rust#117040 * rust-lang/rust#116978 * rust-lang/rust#116960 * rust-lang/rust#116837 * rust-lang/rust#116835 * rust-lang/rust#116849 * rust-lang/rust#117071 * rust-lang/rust#117069 * rust-lang/rust#117051 * rust-lang/rust#117049 * rust-lang/rust#117044 * rust-lang/rust#117042 * rust-lang/rust#105666 * rust-lang/rust#116606 * rust-lang/rust#117066 * rust-lang/rust#115324 * rust-lang/rust#117062 * rust-lang/rust#117000 * rust-lang/rust#117007 * rust-lang/rust#117018 * rust-lang/rust#116256 * rust-lang/rust#117041 * rust-lang/rust#117037 * rust-lang/rust#117034 * rust-lang/rust#116989 * rust-lang/rust#116985 * rust-lang/rust#116950 * rust-lang/rust#116956 * rust-lang/rust#116932 * rust-lang/rust#117031 * rust-lang/rust#117030 * rust-lang/rust#117028 * rust-lang/rust#117026 * rust-lang/rust#116992 * rust-lang/rust#116981 * rust-lang/rust#116955 * rust-lang/rust#116928 * rust-lang/rust#116312 * rust-lang/rust#116368 * rust-lang/rust#116922 * rust-lang/rust#117021 * rust-lang/rust#117020 * rust-lang/rust#117019 * rust-lang/rust#116975 * rust-lang/rust#106601 * rust-lang/rust#116734 * rust-lang/rust#117013 * rust-lang/rust#116995 * rust-lang/rust#116990 * rust-lang/rust#116974 * rust-lang/rust#116964 * rust-lang/rust#116961 * rust-lang/rust#116917 * rust-lang/rust#116911 * rust-lang/rust#114521 * rust-lang/rust#117011 * rust-lang/rust#116958 * rust-lang/rust#116951 * rust-lang/rust#116966 * rust-lang/rust#116965 * rust-lang/rust#116962 * rust-lang/rust#116946 * rust-lang/rust#116899 * rust-lang/rust#116785 * rust-lang/rust#116838 * rust-lang/rust#116875 * rust-lang/rust#116874 * rust-lang/rust#115214 * rust-lang/rust#116810 * rust-lang/rust#116940 * rust-lang/rust#116921 * rust-lang/rust#116906 * rust-lang/rust#116896 * rust-lang/rust#116650 * rust-lang/rust#116132 * rust-lang/rust#116037 * rust-lang/rust#116923 * rust-lang/rust#116912 * rust-lang/rust#116908 * rust-lang/rust#116883 * rust-lang/rust#116829 * rust-lang/rust#116795 * rust-lang/rust#116761 * rust-lang/rust#116663 * rust-lang/rust#114534 * rust-lang/rust#116402 * rust-lang/rust#116493 * rust-lang/rust#116046 * rust-lang/rust#116887 * rust-lang/rust#116885 * rust-lang/rust#116879 * rust-lang/rust#116870 * rust-lang/rust#116865 * rust-lang/rust#116856 * rust-lang/rust#116812 * rust-lang/rust#116815 * rust-lang/rust#116814 * rust-lang/rust#116713 * rust-lang/rust#116830 Co-authored-by: antoyo <antoyo@users.noreply.github.com> Co-authored-by: Antoni Boucher <bouanto@zoho.com> Co-authored-by: bors <bors@rust-lang.org> Co-authored-by: Esteban Küber <esteban@kuber.com.ar> Co-authored-by: Kjetil Kjeka <kjetilkjeka@gmail.com> Co-authored-by: clubby789 <jamie@hill-daniel.co.uk> Co-authored-by: okaneco <47607823+okaneco@users.noreply.github.com> Co-authored-by: David Tolnay <dtolnay@gmail.com> Co-authored-by: Nadrieril <nadrieril+git@gmail.com> Co-authored-by: Celina G. Val <celinval@amazon.com> Co-authored-by: Ralf Jung <post@ralfj.de> Co-authored-by: Zalathar <Zalathar@users.noreply.github.com> Co-authored-by: Havard Eidnes <he@NetBSD.org> Co-authored-by: Jacob Pratt <jacob@jhpratt.dev> Co-authored-by: Kjetil Kjeka <kjetil@muybridge.com> Co-authored-by: Matthias Krüger <matthias.krueger@famsik.de>
This reworks the
overlapping_range_endpoints
lint. My motivations are:Here's the consistency story. Take the following matches:
There are two semantically consistent options: option 1 we lint all overlaps between the ranges, option 2 we only lint the overlaps that could actually occur (i.e. the ones with
true
). Option 1 is what this PR does. Option 2 is possible but would require the exhaustiveness algorithm to track more things for the sake of the lint. The status quo is that we're inconsistent between the two.Option 1 generates more false postives, but I prefer it from a maintainer's perspective. I do think the difference is minimal; cases where the difference is observable seem rare.
This PR adds a separate pass, so this will have a perf impact. Let's see how bad, it looked ok locally.