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Matthias Krüger dbdfa7914c
Rollup merge of #134980 - lqd:polonius-next-episode-7, r=jackh726 
Location-sensitive polonius prototype: endgame

This PR sets up the naive location-sensitive analysis end-to-end, and replaces the location-insensitive analysis. It's roughly all the in-progress work I wanted to land for the prototype, modulo cleanups I still want to do after the holidays, or the polonius debugger, and so on.

Here, we traverse the localized constraint graph, have to deal with kills and time-traveling (👌), and record that as loan liveness for the existing scope and active loans computations.

Then the near future looks like this, especially if the 2025h1 project goal is accepted:
- gradually bringing it up to completion
- analyzing and fixing the few remaining test failures
- going over the *numerous* fixmes in this prototype (one of which is similar to a hang on one test's millions and millions of constraints)
- trying to see how to lower the impact of the lack of NLL liveness optimization on diagnostics, and their categorization of local variables and temporaries (the vast majority of blessed expectations differences), as well as the couple ICEs trying to find an NLL constraint to blame for errors.
- dealing with the theoretical weakness around kills, conflating reachability for the two TCS, etc that is described ad nauseam in the code.
- switching the compare mode to the in-tree implementation, and blessing the diagnostics
- apart from the hang, it's not catastrophically slower on our test suite, so then we can try to enable it on CI
- checking crater, maybe trying to make it faster :3, etc.

I've tried to gradually introduce this PR's work over 4 commits, because it's kind of subtle/annoying, and Niko/I are not completely convinced yet. That one comment explaining the situation is maybe 30% of the PR 😓. Who knew that spacetime reachability and time-traveling could be mind bending.

I kinda found this late and the impact on this part of the computation was a bit unexpected to us. A bit more care/thought will be needed here. I've described my plan in the comments though. In any case, I believe we have the current implementation is a conservative approximation that shouldn't result in unsoundness but false positives at worst. So it feels fine for now.

r? ``@jackh726``

---

Fixes #127628 -- which was a assertion triggered for a difference in loan computation between NLLs and the location-insensitive analysis. That doesn't exist anymore so I've removed this crash test.
2025-01-17 09:11:17 +01:00
..
auxiliary crashes: more tests 2024-12-12 22:09:39 +01:00
34127.rs Fix tests that rely on LLVM IR verification 2024-11-29 19:11:34 +01:00
54888.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
57276.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
74451.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
79409.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
79590.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
87577.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
88296.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
90110.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
91985.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
92004.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
92470.rs crashes: add more tests 2024-04-26 17:20:16 +02:00
93182.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
93237.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
94846.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
95134.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
96304.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
98322.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
100041.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
100618.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
101036.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
101557.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
102047.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
102252.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
103708.rs add more known-crashes tests 2024-04-19 23:09:37 +02:00
103899.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
104685.rs add more known-crashes tests 2024-04-19 23:09:37 +02:00
105238-1.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
105238-2.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
105275.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
105299.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
105937.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
106473.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
107362.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
108499.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
108814.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
110378.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
110534.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
110627.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
111419.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
111709-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
111709.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
111742.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
112201.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
113379.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
113846.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
114198-2.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
114198.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
114212-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
114212.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
114663.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
114920.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
115435.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
115994.rs add more known-crashes tests 2024-04-19 23:09:37 +02:00
116519-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
116519.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
116554.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
116947.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
116979.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
117392-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117392.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117460.rs add crashtests for several old unfixed ICEs 2024-08-30 12:50:07 +02:00
117496.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117629.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117696-1.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117696-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117795.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117808.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
117877.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
118038.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
118244.rs add more known-crashes tests 2024-04-19 23:09:37 +02:00
118590.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
118603.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
118778.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
118784.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
118952-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
118952.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119095.rs add crashtests for several old unfixed ICEs 2024-08-30 12:50:07 +02:00
119692.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
119694.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119729.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119783.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119786.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119824.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
120016.rs more crash tests 2024-09-18 00:10:25 +02:00
120033.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
120175.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
120254.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
120811.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
120873.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
120911.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121097.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121176.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
121363.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
121429.rs Move Const::{from_anon_const,try_from_lit} to hir_ty_lowering 2024-12-02 19:34:47 +00:00
121538.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
121575.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121623.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121858.rs Partially implement ConstArgHasType 2024-05-29 17:06:54 +01:00
121963.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122259.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
122529.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122630.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
122681.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122704.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122710.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122823.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122903-1.rs Adjust crash bug to still reproduce. 2024-05-31 11:04:32 +00:00
122904-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
122904.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
123140.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
123157.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
123456.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
123629.rs add a few more crashtests 2024-09-01 22:28:23 +02:00
123690.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
123810.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
123862.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
123887.rs crashes: increment the number of tracked ones 2024-05-27 17:32:56 +02:00
123959.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
124189.rs crashes: add a couple more ICE tests 2024-04-21 21:04:32 +02:00
124340.rs crashes: add more tests 2024-04-26 17:20:16 +02:00
124352.rs crashes: add more tests 2024-04-26 17:20:16 +02:00
124440.rs crashes: add lastest batch of crash tests 2024-05-05 23:41:08 +02:00
124751.rs Stabilize the 2024 edition 2024-11-22 11:12:15 -08:00
125014.rs crashes: increment the number of tracked ones 2024-05-27 17:32:56 +02:00
125059.rs crashes: increment the number of tracked ones 2024-05-27 17:32:56 +02:00
125185.rs crashes: add more 2024-05-18 23:56:57 +02:00
125323.rs crashes: increment the number of tracked ones 2024-05-27 17:32:56 +02:00
125553.rs remove fixed crashes, add fixed crashes to tests, add new cashed found in the meantime 2024-05-27 20:41:09 +02:00
125680.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125768.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125769.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125772.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125801.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125810.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125841.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125879.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125957.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
126268.rs add and update some crashtests 2024-11-02 23:44:12 +01:00
126269.rs more ice tests 2024-06-16 20:38:08 +02:00
126443.rs add crashtests for several old unfixed ICEs 2024-08-30 12:50:07 +02:00
126667.rs crashes: add more tests 2024-06-29 09:33:28 +02:00
126680.rs crashes: add more tests 2024-06-29 09:33:28 +02:00
126696.rs crashes: add more tests 2024-06-29 09:33:28 +02:00
126944.rs crashes: add latest 2024-07-04 23:44:10 +02:00
126982.rs crashes: add latest 2024-07-04 23:44:10 +02:00
127033.rs add a few more crashtests 2024-09-01 22:28:23 +02:00
127643.rs add more tests 2024-07-21 17:50:57 +02:00
127916.rs add more tests 2024-07-21 17:50:57 +02:00
127972.rs Retroactively feature gate ConstArgKind::Path 2024-08-19 01:14:22 +01:00
128094.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
128097.rs add crashtests for several old unfixed ICEs 2024-08-30 12:50:07 +02:00
128119.rs more crash tests 2024-09-18 00:10:25 +02:00
128190.rs tests: more crashes 2024-08-04 21:25:49 +02:00
128695.rs crashes: more tests 2024-08-15 22:44:16 +02:00
129095.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
129109.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
129209.rs crashes: more tests 2024-08-19 00:38:28 +02:00
129372.rs add a few more crashtests 2024-09-01 22:28:23 +02:00
129425.rs couple more crash tests 2024-08-30 12:38:22 +02:00
129556.rs couple more crash tests 2024-08-30 12:38:22 +02:00
130104.rs tests: more ice tests 2024-09-15 21:18:41 +02:00
130310.rs Revert "Add recursion limit to FFI safety lint" 2024-09-23 12:43:44 -04:00
130346.rs tests: more ice tests 2024-09-15 21:18:41 +02:00
130395.rs add some debug-assertion crash tests 2024-12-08 14:17:25 +01:00
130411.rs more crash tests 2024-09-18 00:10:25 +02:00
130524.rs crashes: more tests 2024-09-29 11:58:09 +02:00
130627.rs crashes: more tests 2024-09-29 11:58:09 +02:00
130779.rs crashes: more tests 2024-09-29 11:58:09 +02:00
130797.rs crashes: more tests 2024-12-15 17:27:52 +01:00
130970.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
131046.rs add more crash tests 2024-10-09 15:34:45 +02:00
131048.rs add more crash tests 2024-10-09 15:34:45 +02:00
131052.rs add more crash tests 2024-10-09 15:34:45 +02:00
131102.rs add more crash tests 2024-10-09 15:34:45 +02:00
131103.rs add more crash tests 2024-10-09 15:34:45 +02:00
131292.rs add more crash tests 2024-10-09 15:34:45 +02:00
131295.rs add more crash tests 2024-10-09 15:34:45 +02:00
131298.rs add more crash tests 2024-10-09 15:34:45 +02:00
131342.rs Emit warning when calling/declaring functions with unavailable vectors. 2024-11-01 22:24:35 +01:00
131347.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
131373.rs add more crash tests 2024-10-09 15:34:45 +02:00
131406.rs add more crash tests 2024-10-09 15:34:45 +02:00
131451.rs crashes: add test for #131451 2024-12-08 13:09:46 +01:00
131507.rs crash tests: use individual mir opts instead of mir-opt-level where easily possible 2024-12-08 16:52:32 +01:00
131534.rs add latest crash tests 2024-10-12 11:29:38 +02:00
131758.rs add latest crash tests 2024-10-20 10:05:39 +02:00
131762.rs add latest crash tests 2024-10-20 10:05:39 +02:00
131787.rs add latest crash tests 2024-10-20 10:05:39 +02:00
131886.rs add latest crash tests 2024-10-20 10:05:39 +02:00
132103.rs crashes: more tests 2024-12-15 17:27:52 +01:00
132126.rs add and update some crashtests 2024-11-02 23:44:12 +01:00
132142.rs more crash tests 2024-11-06 22:10:23 +01:00
132330.rs more crash tests 2024-11-06 22:10:23 +01:00
132335.rs more crash tests 2024-11-06 22:10:23 +01:00
132391.rs more crash tests 2024-11-06 22:10:23 +01:00
132430.rs more crash tests 2024-11-06 22:10:23 +01:00
132765.rs crashes: more tests 2024-12-12 22:09:39 +01:00
132882.rs crashes: more tests 2024-12-12 22:09:39 +01:00
132960.rs crashes: more tests 2024-12-15 17:27:52 +01:00
132981.rs crashes: more tests 2024-12-12 22:09:39 +01:00
132985.rs Introduce min_generic_const_args and directly represent paths 2024-11-19 05:07:43 +00:00
133063.rs crashes: more tests 2024-12-12 22:09:39 +01:00
133066.rs crashes: more tests 2024-12-12 22:09:39 +01:00
133117.rs crashes: more tests 2024-12-15 17:27:52 +01:00
133199.rs crashes: more tests 2024-12-12 22:09:39 +01:00
133275-1.rs crashes: more tests 2024-12-12 22:09:39 +01:00
133275-2.rs crashes: more tests 2024-12-12 22:09:39 +01:00
133426.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
133597.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
133613.rs crashes: more tests 2024-12-15 17:27:52 +01:00
133808.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
133868.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
133965.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
133966.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
134061.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
134174.rs crashes: more tests 2024-12-15 17:27:52 +01:00
134217.rs crashes: more tests v2 2024-12-12 22:55:31 +01:00
134334.rs crashes: more tests 2024-12-15 17:27:52 +01:00
134335.rs crashes: more tests 2024-12-15 17:27:52 +01:00
134336.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134355.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134479.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134587.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134615.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134641.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134654.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134838.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
134905.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
135020.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
135039.rs crashes: add latest batch of tests 2025-01-04 14:38:06 +01:00
135122.rs add more crash tests 2025-01-12 10:11:29 +01:00
135124.rs add more crash tests 2025-01-12 10:11:29 +01:00
135128.rs add more crash tests 2025-01-12 10:11:29 +01:00
135210.rs add more crash tests 2025-01-12 10:11:29 +01:00
135341.rs add more crash tests 2025-01-12 10:11:29 +01:00
const_mut_ref_check_bypass.rs turn errors that should be impossible due to our static checks into ICEs 2024-09-10 10:27:30 +02:00
README.md add note not to re-report crashes from crashes tests 2024-11-06 18:07:47 +01:00

README.md

This is serves as a collection of crashes so that accidental ICE fixes are tracked. This was formally done at https://github.com/rust-lang/glacier but doing it inside the rustc testsuite is more convenient.

It is imperative that a test in the suite causes an internal compiler error/panic or makes rustc crash in some other way. A test will "pass" if rustc exits with something other than 1 or 0.

When adding crashes from https://github.com/rust-lang/rust/issues, the issue number should be noted in the file name (12345.rs should suffice) and also inside the file via //@ known-bug #4321 if possible.

If you happen to fix one of the crashes, please move it to a fitting subdirectory in tests/ui and give it a meaningful name. Also please add a doc comment at the top of the file explaining why this test exists. :) Adding Fixes #NNNNN Fixes #MMMMM to the description of your pull request will ensure the corresponding tickets will be closed automatically upon merge. The ticket ids can be found in the file name or the known-bug annotation inside the testfile.

Please do not re-report any crashes that you find here!