Pass FnAbi to find_mir_or_eval_fn by tiif · Pull Request #133103 · rust-lang/rust

tiif · 2024-11-16T11:46:07Z

rust-lang/miri#4013 needs information from FnAbi, hence it is passed to find_mir_or_eval_fn.

r? @RalfJung

rustbot · 2024-11-16T11:46:17Z

Some changes occurred to the CTFE machinery

cc @rust-lang/wg-const-eval

Some changes occurred to the CTFE / Miri interpreter

cc @rust-lang/miri

The Miri subtree was changed

cc @rust-lang/miri

RalfJung · 2024-11-24T09:04:40Z

@rustbot author

tiif · 2024-11-27T18:34:42Z

@RalfJung There are some refactorings needed to remove ExternAbi from find_mir_or_eval_fn. Specifically, all functions that call this.check_shim will need to be updated. Could I confirm if this direction is what we are going for?

RalfJung · 2024-11-27T20:47:48Z

Specifically, all functions that call this.check_shim will need to be updated.

Yeah, they should pass fn_abi to check_shim, and all the ExternAbi::C { unwind: false } become abi::Conv::C.

bors · 2024-12-09T06:18:11Z

☔ The latest upstream changes (presumably #134052) made this pull request unmergeable. Please resolve the merge conflicts.

tiif · 2024-12-10T16:08:12Z

Interesting... for the same test, running on Linux will pass, but running on Windows will fail because of incompatible ABI.

For future reference:

./x.py test miri --test-args tests/pass/align.rs --target x86_64-pc-windows-gnu failed with calling a function with ABI X86Stdcall using caller ABI C
./x.py test miri --test-args tests/pass/align.rs --target x86_64-unknown-linux-gnu pass.

This means that for the exact same function, whether we should use Conv::C or Conv::X86Stdcall depends on the target we are running? Or maybe I just did something bad somewhere...

EDIT: Ok nevermind, it's just I used Conv::X86Stdcall when it supposed to be Conv::C, even for the same tests, it hits different path for Windows and Linux.

RalfJung · 2024-12-10T17:41:56Z

This means that for the exact same function, whether we should use Conv::C or Conv::X86Stdcall depends on the target we are running? Or maybe I just did something bad somewhere...

Yes that makes sense, Windows has some special rules here.

tiif · 2024-12-14T17:38:40Z

I might continue to fix some cosmetic issues such as stray new lines, but this PR is ready for review

@rustbot ready

RalfJung

Looks pretty good. :) Just some minor comments.

RalfJung · 2024-12-15T08:34:51Z

+ if fn_abi.conv != exp_abi {
 throw_ub_format!(
 "calling a function with ABI {} using caller ABI {}",


Just use debug formatting for the error for now. We do the same in interpret/call.rs already.
The proper fix here would be a impl Display for Conv somewhere near this. If you want you can do that in a future PR. :)

Sure, I can open one after this.

RalfJung · 2024-12-15T08:41:11Z

@rustbot author

bors · 2024-12-17T22:13:04Z

☔ The latest upstream changes (presumably #134381) made this pull request unmergeable. Please resolve the merge conflicts.

…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#133265 (Add a range argument to vec.extract_if) - rust-lang#133801 (Promote powerpc64le-unknown-linux-musl to tier 2 with host tools) - rust-lang#134323 (coverage: Dismantle `map_data.rs` by moving its responsibilities elsewhere) - rust-lang#134378 (An octuple of polonius fact generation cleanups) - rust-lang#134408 (Regression test for RPIT inheriting lifetime from projection) - rust-lang#134423 (bootstrap: use specific-purpose ui test path for `test_valid` self-test) - rust-lang#134426 (Fix typo in uint_macros.rs) Failed merges: - rust-lang#133103 (Pass FnAbi to find_mir_or_eval_fn) r? `@ghost` `@rustbot` modify labels: rollup

tiif · 2024-12-18T04:24:21Z

I will need some time to figure out how to resolve the merge conflict, and will request for r+ again after resolving it.

tiif · 2024-12-18T04:33:27Z

Hmm this is weird, the import is valid and I didn't change anything from attr, but got this error:

 --> compiler/rustc_hir/src/hir.rs:5:5
|
5 | use rustc_ast::attr::AttributeExt;
|^^^^^^^^^^^^^^^^^------------
|||||help: a similar name exists in the module: `Attribute`
| no `AttributeExt` in `attr`
error[E0432]: unresolved import `rustc_ast::UnsafeBinderCastKind`
--> compiler/rustc_hir/src/hir.rs:14:57
|
14 | ImplPolarity, IsAuto, Movability, Mutability, UnOp, UnsafeBinderCastKind,
|^^^^^^^^^^^^^^^^^^^^ no `UnsafeBinderCastKind` in the root
error[E0432]: unresolved import `rustc_ast::attr::AttributeExt`
--> compiler/rustc_hir/src/lang_items.rs:10:5
|
10 | use rustc_ast::attr::AttributeExt;
|^^^^^^^^^^^^^^^^^------------
|||||help: a similar name exists in the module: `Attribute`
| no `AttributeExt` in `attr`
For more information about this error, try `rustc --explain E0432`.

@oli-obk since you reviewed #134381, do you know what's going on here and how to resolve this?

oli-obk · 2024-12-18T04:44:46Z

That's weird. Sounds like a cache issue where it doesn't think a crate has changed when it acrually has. Worst case try x clean

tiif · 2024-12-18T04:53:49Z

x clean works, thanks!

bors · 2024-12-18T06:17:56Z

☔ The latest upstream changes (presumably #134243) made this pull request unmergeable. Please resolve the merge conflicts.

RalfJung · 2024-12-19T15:21:40Z

@bors r+

oli-obk · 2024-12-19T16:29:40Z

@bors ping

bors · 2024-12-19T16:29:43Z

😪 I'm awake I'm awake

oli-obk · 2024-12-19T16:29:53Z

@bors r=RalfJung

bors · 2024-12-19T16:29:56Z

📌 Commit fd8b983 has been approved by RalfJung

It is now in the queue for this repository.

Rollup of 6 pull requests Successful merges: - rust-lang#126118 (docs: Mention `spare_capacity_mut()` in `Vec::set_len`) - rust-lang#132830 (Rename `elem_offset` to `element_offset`) - rust-lang#133103 (Pass FnAbi to find_mir_or_eval_fn) - rust-lang#134321 (Hide `= _` as associated constant value inside impl blocks) - rust-lang#134518 (fix typos in the example code in the doc comments of `Ipv4Addr::from_bits()`, `Ipv6Addr::from_bits()` & `Ipv6Addr::to_bits()`) - rust-lang#134521 (Arbitrary self types v2: roll loop.) r? `@ghost` `@rustbot` modify labels: rollup

Rollup merge of rust-lang#133103 - tiif:fnabi, r=RalfJung Pass FnAbi to find_mir_or_eval_fn rust-lang/miri#4013 needs information from ``FnAbi``, hence it is passed to ``find_mir_or_eval_fn``. r? `@RalfJung`

Implement Display for ``rustc_target::callconv::Conv`` Follow up of rust-lang#133103 (comment)

Rollup merge of rust-lang#135808 - tiif:conv_display, r=workingjubilee Implement Display for ``rustc_target::callconv::Conv`` Follow up of rust-lang#133103 (comment)

Implement Display for ``rustc_target::callconv::Conv`` Follow up of rust-lang/rust#133103 (comment)

rustbot assigned RalfJung Nov 16, 2024

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Nov 16, 2024

RalfJung reviewed Nov 24, 2024
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Comment threadcompiler/rustc_const_eval/src/interpret/machine.rs Outdated

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tiif commented Nov 30, 2024
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Comment threadsrc/tools/miri/src/shims/x86/mod.rs Outdated

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tiif commented Dec 3, 2024
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Comment threadsrc/tools/miri/src/shims/tls.rs

tiif commented Dec 3, 2024
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Comment threadsrc/tools/miri/src/shims/windows/foreign_items.rs

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tiif commented Dec 11, 2024
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Comment threadsrc/tools/miri/src/shims/windows/foreign_items.rs

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rust-cloud-vmsBotforce-pushed the fnabi branch from 45fc89a to 5454c95Compare December 19, 2024 13:57

Pass FnAbi to find_mir_or_eval_fn
fd8b983

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bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Dec 19, 2024

jhpratt mentioned this pull request Dec 20, 2024
Rollup of 6 pull requests #134550
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bors merged commit a53204f into rust-lang:masterDec 20, 2024

rustbot added this to the 1.85.0 milestone Dec 20, 2024

tiif mentioned this pull request Jan 21, 2025
Implement Display for rustc_target::callconv::Conv#135808
Merged

matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request May 17, 2025
Rollup merge ofrust-lang#135808- tiif:conv_display, r=workingjubilee
836db3c
Implement Display for ``rustc_target::callconv::Conv`` Follow up of rust-lang#133103 (comment)

github-actionsBot pushed a commit to rust-lang/miri that referenced this pull request May 18, 2025
Rollup merge of #135808 - tiif:conv_display, r=workingjubilee
5d71837
Implement Display for ``rustc_target::callconv::Conv`` Follow up of rust-lang/rust#133103 (comment)

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