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bors 9629b90b3f Auto merge of #127722 - BoxyUwU:new_adt_const_params_limitations, r=compiler-errors 
Forbid borrows and unsized types from being used as the type of a const generic under `adt_const_params`

Fixes #112219
Fixes #112124
Fixes #112125

### Motivation

Currently the `adt_const_params` feature allows writing `Foo<const N: [u8]>` this is entirely useless as it is not possible to write an expression which evaluates to a type that is not `Sized`. In order to actually use unsized types in const generics they are typically written as `const N: &[u8]` which *is* possible to provide a value of.

Unfortunately allowing the types of const parameters to contain references is non trivial (#120961) as it introduces a number of difficult questions about how equality of references in the type system should behave. References in the types of const generics is largely only useful for using unsized types in const generics.

This PR introduces a new feature gate `unsized_const_parameters` and moves support for `const N: [u8]` and `const N: &...` from `adt_const_params` into it. The goal here hopefully is to experiment with allowing `const N: [u8]` to work without references and then eventually completely forbid references in const generics.

Splitting this out into a new feature gate means that stabilization of `adt_const_params` does not have to resolve #120961 which is the only remaining "big" blocker for the feature. Remaining issues after this are a few ICEs and naming bikeshed for `ConstParamTy`.

### Implementation

The implementation is slightly subtle here as we would like to ensure that a stabilization of `adt_const_params` is forwards compatible with any outcome of `unsized_const_parameters`. This is inherently tricky as we do not support unstable trait implementations and we determine whether a type is valid as the type of a const parameter via a trait bound.

There are a few constraints here:
- We would like to *allow for the possibility* of adding a `Sized` supertrait to `ConstParamTy` in the event that we wind up opting to not support unsized types and instead requiring people to write the 'sized version', e.g. `const N: [u8; M]` instead of `const N: [u8]`.
- Crates should be able to enable `unsized_const_parameters` and write trait implementations of `ConstParamTy` for `!Sized` types without downstream crates that only enable `adt_const_params` being able to observe this (required for std to be able to `impl<T> ConstParamTy for [T]`

Ultimately the way this is accomplished is via having two traits (sad), `ConstParamTy` and `UnsizedConstParamTy`. Depending on whether `unsized_const_parameters` is enabled or not we change which trait is used to check whether a type is allowed to be a const parameter.

Long term (when stabilizing `UnsizedConstParamTy`) it should be possible to completely merge these traits (and derive macros), only having a single `trait ConstParamTy` and `macro ConstParamTy`.

Under `adt_const_params` it is now illegal to directly refer to `ConstParamTy` it is only used as an internal impl detail by `derive(ConstParamTy)` and checking const parameters are well formed. This is necessary in order to ensure forwards compatibility with all possible future directions for `feature(unsized_const_parameters)`.

Generally the intuition here should be that `ConstParamTy` is the stable trait that everything uses, and `UnsizedConstParamTy` is that plus unstable implementations (well, I suppose `ConstParamTy` isn't stable yet :P).
2024-07-21 05:36:21 +00:00
..
23707.rs crashes: limit a couple tests to only run on x86_64 and/or not on windows 2024-04-14 23:53:39 +02:00
34127.rs crashes: limit a couple tests to only run on x86_64 and/or not on windows 2024-04-14 23:53:39 +02:00
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
74299.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
97501.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
101962.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +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
105249.rs add more known-crashes tests 2024-04-19 23:09:37 +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
109681.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
110630.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
111419.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
111699.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +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
112623.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
113280.rs crashes: limit a couple tests to only run on x86_64 and/or not on windows 2024-04-14 23:53:39 +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
114317.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
114484.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
115808.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
115994.rs add more known-crashes tests 2024-04-19 23:09:37 +02:00
116308.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +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
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
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
117829-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117829.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
117942.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
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
118320.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
118545.rs crashes: add a couple more tests 2024-04-18 18:55:20 +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
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
118987-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
118987.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119272.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +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
119701.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119716-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
119716.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
119924-6.rs Migrate tests to use -Znext-solver 2024-06-30 17:08:45 +00:00
120033.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
120241-2.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
120241.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
120254.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
120482.rs crashes: fix ice detection which did not trigger if code compiled without error by accident 2024-04-14 11:21:58 +02:00
120792.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
120793-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
120793.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +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
121052.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121063.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
121097.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121127.rs The ICE in 121127 needs debuginfo 2024-04-18 09:42:26 -07:00
121161.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121263-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121263.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121299.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121363.rs crashes: add a couple more tests 2024-04-18 18:55:20 +02:00
121411.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121422.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121429.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121444.rs crashes: limit a couple tests to only run on x86_64 and/or not on windows 2024-04-14 23:53:39 +02:00
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
121613-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121613.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
121722.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121799.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121816.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
121957-1.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
121957-2.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
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
122909.rs add .rs crashes from https://github.com/rust-lang/glacier 2024-04-14 11:18:23 +02:00
122914.rs tests/crashes: add ICEs from matthiaskrgr/glacier2 2024-04-14 11:21:51 +02:00
123077-2.rs crashes: limit a couple tests to only run on x86_64 and/or not on windows 2024-04-14 23:53:39 +02:00
123134.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
123141.rs Partially implement ConstArgHasType 2024-05-29 17:06:54 +01:00
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
123690.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
123693.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
123809.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
123887.rs crashes: increment the number of tracked ones 2024-05-27 17:32:56 +02:00
123893.rs Give inlining bonuses to things that optimize out 2024-06-19 21:35:37 -07:00
123955.rs crashes: add a couple more ICE tests 2024-04-21 21:04:32 +02:00
123959.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
124020.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
124021.rs crashes: add even more tests?!? 2024-04-18 06:13:47 +02:00
124092.rs crashes: add a couple more ICE tests 2024-04-21 21:04:32 +02:00
124164.rs add more known-crashes tests 2024-04-19 23:09:37 +02:00
124182.rs crashes: add a couple more ICE tests 2024-04-21 21:04:32 +02:00
124189.rs crashes: add a couple more ICE tests 2024-04-21 21:04:32 +02:00
124207.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
124350.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
124375.rs crashes: add more tests 2024-04-26 17:20:16 +02:00
124436.rs crashes: add lastest batch of crash tests 2024-05-05 23:41:08 +02:00
124440.rs crashes: add lastest batch of crash tests 2024-05-05 23:41:08 +02:00
124751.rs crashes: add lastest batch of crash tests 2024-05-05 23:41:08 +02:00
124894.rs crashes: add more 2024-05-18 23:56:57 +02:00
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
125249.rs Change RTN to use .. again 2024-06-28 14:20:43 -04:00
125323.rs crashes: increment the number of tracked ones 2024-05-27 17:32:56 +02:00
125476.rs remove fixed crashes, add fixed crashes to tests, add new cashed found in the meantime 2024-05-27 20:41:09 +02:00
125512.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
125655.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125680.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125758.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
125843.rs tests: add more crashes 2024-06-09 10:16:12 +02:00
125874.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
125881.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
126182.rs more ice tests 2024-06-16 20:38:08 +02:00
126267.rs more ice tests 2024-06-16 20:38:08 +02:00
126269.rs more ice tests 2024-06-16 20:38:08 +02:00
126272.rs more ice tests 2024-06-16 20:38:08 +02:00
126359.rs more ice tests 2024-06-16 20:38:08 +02:00
126377.rs more ice tests 2024-06-16 20:38:08 +02:00
126646.rs crashes: add more tests 2024-06-29 09:33:28 +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
126725.rs crashes: add more tests 2024-06-29 09:33:28 +02:00
126850.rs crashes: add more tests 2024-06-29 09:33:28 +02:00
126896.rs crashes: add latest 2024-07-04 23:44:10 +02:00
126939.rs crashes: add latest 2024-07-04 23:44:10 +02:00
126942.rs crashes: add latest 2024-07-04 23:44:10 +02:00
126944.rs crashes: add latest 2024-07-04 23:44:10 +02:00
126966.rs crashes: add latest 2024-07-04 23:44:10 +02:00
126969.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
127009.rs Add ConstArgKind::Path and make ConstArg its own HIR node 2024-07-16 19:27:28 -07:00
127222.rs crashes: add latest 2024-07-04 23:44:10 +02:00
127299.rs crashes: add latest 2024-07-04 23:44:10 +02:00
README.md crashes: readme: add reminder to add Fixes #abcde to prs to automatically close issues. 2024-04-15 21:44:04 +02:00

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 perhaps also inside the file via //@ known-bug #4321

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.