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104 Commits

Author SHA1 Message Date
Matthias Krüger
1d46614335 Rollup merge of #116650 - RalfJung:miri-intptrcast, r=oli-obk 
add some comments and some cleanup around Miri intptrcast

`@saethlin` maybe this helps a bit?
 2023-10-19 14:38:26 +02:00
bors
e7bdc5f9f8 Auto merge of #114330 - RalfJung:dagling-ptr-deref, r=oli-obk 
don't UB on dangling ptr deref, instead check inbounds on projections

This implements https://github.com/rust-lang/reference/pull/1387 in Miri. See that PR for what the change is about.

Detecting dangling references in `let x = &...;` is now done by validity checking only, so some tests need to have validity checking enabled. There is no longer inherently a "nodangle" check in evaluating the expression `&*ptr` (aside from the aliasing model).

r? `@oli-obk`

Based on:
- https://github.com/rust-lang/reference/pull/1387
- https://github.com/rust-lang/rust/pull/115524
 2023-10-16 12:40:16 +00:00
Ralf Jung
b131fc10ae separate bounds-check from alignment check 2023-10-15 18:13:33 +02:00
Ralf Jung
e24835c6e0 more precise error for 'based on misaligned pointer' case 2023-10-15 18:13:33 +02:00
Ralf Jung
cbf47a17d2 avoid computing misalignment if we won't act on it 2023-10-15 18:13:33 +02:00
Ralf Jung
f3f9b795bd place evaluation: require the original pointer to be aligned if an access happens 2023-10-15 18:13:31 +02:00
Ralf Jung
9c417a4ad4 interpret: clean up AllocBytes 2023-10-14 12:29:16 +02:00
bors
75a5dd05bc Auto merge of #115524 - RalfJung:misalign, r=wesleywiser 
const-eval: make misalignment a hard error

It's been a future-incompat error (showing up in cargo's reports) since https://github.com/rust-lang/rust/pull/104616, Rust 1.68, released in March.  That should be long enough.

The question for the lang team is simply -- should we move ahead with this, making const-eval alignment failures a hard error? (It turns out some of them accidentally already were hard errors since #104616. But not all so this is still a breaking change. Crater found no regression.)
 2023-10-14 00:57:09 +00:00
Ralf Jung
1ee055f0ec add some comments and some cleanup around Miri intptrcast 2023-10-13 07:42:07 +02:00
Ralf Jung
acb7c21507 dont call mir.post_mono_checks in codegen 2023-09-30 07:38:08 +02:00
Ralf Jung
a993a8bf3f const-eval: make misalignment a hard error 2023-09-26 15:32:55 +02:00
Ralf Jung
430c386821 make it more clear which functions create fresh AllocId 2023-09-14 07:27:31 +02:00
Matthias Krüger
01fdb9d148 Rollup merge of #114363 - RalfJung:interpret-not-miri, r=jackh726 
avoid 'miri' when refering to the shared interpreter

This is basically the rustc source code version of https://github.com/rust-lang/rustc-dev-guide/pull/1471.
 2023-08-03 08:12:39 +02:00
Ralf Jung
2984670cea avoid 'miri' when refering to the shared interpreter 2023-08-02 16:52:03 +02:00
Ralf Jung
8496292dda properly track why we checked whether a pointer is in-bounds 
also simplify the in-bounds checking in Miri's borrow trackers
 2023-08-01 17:57:13 +02:00
Matthias Krüger
c64ef5e070 inline format!() args from rustc_codegen_llvm to the end (4) 
r? @WaffleLapkin
 2023-07-25 23:20:28 +02:00
David Tolnay
5bbf0a8306 Revert "Auto merge of #113166 - moulins:ref-niches-initial, r=oli-obk" 
This reverts commit 557359f925, reversing
changes made to 1e6c09a803.
 2023-07-21 22:35:57 -07:00
Moulins
39cfe70e4f CTFE: move target_{i, u}size_{min, max) to rustc_abi::TargetDataLayout 2023-07-21 03:31:47 +02:00
Moulins
76c49aead6 support non-null pointer niches in CTFE 2023-07-21 03:31:45 +02:00
Mark Rousskov
cc907f80b9 Re-format let-else per rustfmt update 2023-07-12 21:49:27 -04:00
Deadbeef
4f83717cf7 Use translatable diagnostics in rustc_const_eval 2023-06-01 14:45:18 +00:00
Ben Kimock
606ca4da7e Report a backtrace for memory leaks under Miri 2023-04-16 08:52:00 -04:00
Rune Tynan
936b567d2e Minimal changes to make miri work 2023-02-20 13:50:20 -05:00
Rune Tynan
f1f40ac05c Fix alloc_base_addr type 2023-02-20 13:47:12 -05:00
Rune Tynan
6f407d67b8 Allow non-Box allocations in preparation for aligned const allocations for miri. Credit to emarteca for the code. 2023-02-20 13:47:09 -05:00
Kyle Matsuda
8e92849cbb changes from review 2023-02-16 17:05:59 -07:00
Kyle Matsuda
c183110cc2 remove bound_type_of query; make type_of return EarlyBinder; change type_of in metadata 2023-02-16 17:05:56 -07:00
Kyle Matsuda
d822b97a27 change usages of type_of to bound_type_of 2023-02-16 17:01:52 -07:00
Oli Scherer
38b7cdf393 Use target instead of machine for mir interpreter integer handling. 
The naming of `machine` only makes sense from a mir interpreter internals perspective, but outside users talk about the `target` platform
 2023-02-15 08:56:18 +00:00
Ralf Jung
2900ba15b3 miri: fix ICE when running out of address space 2023-02-07 13:26:31 +01:00
Maybe Waffle
4d75f61832 Use Mutability::{is_mut, is_not} 2023-01-30 12:26:26 +00:00
bors
56ee85274e Auto merge of #106090 - WaffleLapkin:dereffffffffff, r=Nilstrieb 
Remove some `ref` patterns from the compiler

Previous PR: https://github.com/rust-lang/rust/pull/105368

r? `@Nilstrieb`
 2023-01-20 04:52:28 +00:00
Maybe Waffle
6a28fb42a8 Remove double spaces after dots in comments 2023-01-17 08:09:33 +00:00
Maybe Waffle
3dca58e249 rustc_const_eval: remove ref patterns (+some pattern matching imps) 2023-01-17 07:48:19 +00:00
Oli Scherer
d9d92ed7da Move alignment failure error reporting to machine 2022-12-15 16:07:35 +00:00
Oli Scherer
d66824dbc4 Make alignment checks a future incompat lint 2022-12-15 16:07:28 +00:00
Oli Scherer
ed71e32e14 Always pass alignment and handle checking lazily 2022-12-15 15:51:43 +00:00
Ralf Jung
1115ec601a cleanup and dedupe CTFE and Miri error reporting 2022-11-16 10:13:29 +01:00
bors
a00f8ba7fc Auto merge of #104054 - RalfJung:byte-provenance, r=oli-obk 
interpret: support for per-byte provenance

Also factors the provenance map into its own module.

The third commit does the same for the init mask. I can move it in a separate PR if you prefer.

Fixes https://github.com/rust-lang/miri/issues/2181

r? `@oli-obk`
 2022-11-15 17:37:15 +00:00
Ralf Jung
68af46c112 assert that we are (de)seiralizing ProvenanceMap correctly 2022-11-14 18:26:40 +01:00
Ralf Jung
c78021709a add is_sized method on Abi and Layout, and use it 2022-11-13 12:23:53 +01:00
Ralf Jung
c3a7ca1125 move InitMask to its own module 2022-11-06 14:17:10 +01:00
Ralf Jung
2cef9e3d19 interpret: support for per-byte provenance 2022-11-06 14:17:10 +01:00
Rageking8
7122abaddf more dupe word typos 2022-10-14 12:57:56 +08:00
Dezhi Wu
b1430fb7ca Fix a bunch of typo 
This PR will fix some typos detected by [typos].

I only picked the ones I was sure were spelling errors to fix, mostly in
the comments.

[typos]: https://github.com/crate-ci/typos
 2022-08-31 18:24:55 +08:00
Ralf Jung
2e172473da interpret: make read-pointer-as-bytes *always* work in Miri 
and show some extra information when it happens in CTFE
 2022-08-27 18:37:44 -04:00
Ralf Jung
e63a625711 interpret: rename relocation → provenance 2022-08-27 14:11:19 -04:00
Ralf Jung
30fa931f92 make read_immediate error immediately on uninit, so ImmTy can carry initialized Scalar 2022-08-26 13:20:57 -04:00
Ralf Jung
2e52fe01cf remove some now-unnecessary parameters from check_bytes 2022-08-26 13:20:56 -04:00
Ralf Jung
9d604f301b fix an outdated machine hook name 2022-08-26 13:20:56 -04:00