internal: Properly check the edition for edition dependent syntax kinds
This puts the current edition in a bunch of places, most of which I annoted with FIXMEs asside from the ones in ide-assists because I couldnt bother with those
Rework MIR inlining debuginfo so function parameters show up in debuggers.
Line numbers of multiply-inlined functions were fixed in #114643 by using a single DISubprogram. That, however, triggered assertions because parameters weren't deduplicated. The "solution" to that in #115417 was to insert a DILexicalScope below the DISubprogram and parent all of the parameters to that scope. That fixed the assertion, but debuggers (including gdb and lldb) don't recognize variables that are not parented to the subprogram itself as parameters, even if they are emitted with DW_TAG_formal_parameter.
Consider the program:
```rust
use std::env;
#[inline(always)]
fn square(n: i32) -> i32 {
n * n
}
#[inline(never)]
fn square_no_inline(n: i32) -> i32 {
n * n
}
fn main() {
let x = square(env::vars().count() as i32);
let y = square_no_inline(env::vars().count() as i32);
println!("{x} == {y}");
}
```
When making a release build with debug=2 and rustc 1.82.0-nightly (8b3870784 2024-08-07)
```
(gdb) r
Starting program: /ephemeral/tmp/target/release/tmp [Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Breakpoint 1, tmp::square () at src/main.rs:5
5 n * n
(gdb) info args
No arguments.
(gdb) info locals
n = 31
(gdb) c
Continuing.
Breakpoint 2, tmp::square_no_inline (n=31) at src/main.rs:10
10 n * n
(gdb) info args
n = 31
(gdb) info locals
No locals.
```
This issue is particularly annoying because it removes arguments from stack traces.
The DWARF for the inlined function looks like this:
```
< 2><0x00002132 GOFF=0x00002132> DW_TAG_subprogram
DW_AT_linkage_name _ZN3tmp6square17hc507052ff3d2a488E
DW_AT_name square
DW_AT_decl_file 0x0000000f /ephemeral/tmp/src/main.rs
DW_AT_decl_line 0x00000004
DW_AT_type 0x00001a56<.debug_info+0x00001a56>
DW_AT_inline DW_INL_inlined
< 3><0x00002142 GOFF=0x00002142> DW_TAG_lexical_block
< 4><0x00002143 GOFF=0x00002143> DW_TAG_formal_parameter
DW_AT_name n
DW_AT_decl_file 0x0000000f /ephemeral/tmp/src/main.rs
DW_AT_decl_line 0x00000004
DW_AT_type 0x00001a56<.debug_info+0x00001a56>
< 4><0x0000214e GOFF=0x0000214e> DW_TAG_null
< 3><0x0000214f GOFF=0x0000214f> DW_TAG_null
```
That DW_TAG_lexical_block inhibits every debugger I've tested from recognizing 'n' as a parameter.
This patch removes the additional lexical scope. Parameters can be easily deduplicated by a tuple of their scope and the argument index, at the trivial cost of taking a Hash + Eq bound on DIScope.
Use the `enum2$` Natvis visualiser for repr128 C-style enums
Use the preexisting `enum2$` Natvis visualiser to allow PDB debuggers to display fieldless `#[repr(u128)]]`/`#[repr(i128)]]` enums correctly.
Tracking issue: #56071
try-job: x86_64-msvc
fix: Panic while hovering associated function with type annotation on generic param that not inherited from its container type
Fixes#17871
We call `generic_args_sans_defaults` here;
64a140527b/crates/hir-ty/src/display.rs (L1021-L1034)
but the following substitution inside that function panic in #17871;
64a140527b/crates/hir-ty/src/display.rs (L1468)
it's because the `Binders.binder` inside `default_parameters` has a same length with the generics of the function we are hovering on, but the generics of it is split into two, `fn_params` and `parent_params`.
Because of this, it may panic if the function has one or more default parameters and both `fn_params` and `parent_params` are non-empty, like the case in the title of this PR.
So, we must call `generic_args_sans_default` first and then split it into `fn_params` and `parent_params`
This test was previously flakey on `i686-mingw`, but since some
modifications I could no longer make it fail on `i686-mingw`.
See <https://github.com/rust-lang/rust/pull/128958> for multiple try
job runs.
Fix dependencies cron job
This fixes a mistake in #127786 that broke the dependencies update cron job. I accidentally set the wrong path in the cargo command.
Use `append` instead of `extend(drain(..))`
The first commit adds `IndexVec::append` that forwards to `Vec::append`, and uses it in a couple places.
The second commit updates `indexmap` for its new `IndexMap::append`, and also uses that in a couple places.
These changes are similar to what [`clippy::extend_with_drain`](https://rust-lang.github.io/rust-clippy/master/index.html#/extend_with_drain) would suggest, just for other collection types.
Add possibility to generate rustdoc JSON output to stdout
Fixes#127165.
I think it's likely common to want to get rustdoc json output directly instead of reading it from a file so I added this option to allow it. It's unstable and only works with `--output-format=json`.
r? `@aDotInTheVoid`
Hash Ipv*Addr as an integer
The `Ipv4Addr` and `Ipv6Addr` structs always have a fixed size, but directly derive `Hash`. This causes them to call the bytestring hasher implementation, which adds extra work for most hashers. This PR converts the internal representation to a fixed-width integer before passing to the hasher to prevent this.
derive(SmartPointer): register helper attributes
Fix#128888
This PR enables built-in macros to register helper attributes, if any, to support correct name resolution in the correct lexical scope under the macros.
Also, `#[pointee]` is moved into the scope under `derive(SmartPointer)`.
cc `@Darksonn` `@davidtwco`
Add powerpc-unknown-linux-muslspe compile target
This is almost identical to already existing targets:
- powerpc_unknown_linux_musl.rs
- powerpc_unknown_linux_gnuspe.rs
It has support for PowerPC SPE (muslspe), which
can be used with GCC version up to 8. It is useful for Freescale or IBM cores like e500.
This was verified to be working with OpenWrt build system for CZ.NIC's Turris 1.x routers, which are using Freescale P2020, e500v2, so add it as a Tier 3 target.
Follow-up of https://github.com/rust-lang/rust/pull/100860
CommandExt::before_exec: deprecate safety in edition 2024
Similar to `set_var`, we had to find out after 1.0 was released that `before_exec` should have been unsafe. We partially rectified this by deprecating that function a long time ago, but since https://github.com/rust-lang/rust/pull/124636 we have the ability to also deprecate the safety of the old function and make it a *hard error* to call the old function outside `unsafe` in the next edition. So just in case anyone still uses the old function, let's ensure this can't be ignored when moving code to the new edition.
Cc `@rust-lang/libs-api`
Tracking:
- https://github.com/rust-lang/rust/issues/124866
Migrate `min-global-align` and `no-alloc-shim` `run-make` tests to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Please try:
try-job: aarch64-apple
try-job: test-various
try-job: armhf-gnu
try-job: aarch64-gnu
try-job: aarch64-gnu
fix: Panic while canonicalizing erroneous projection type
Fixes#17866
The root cause of #17866 is quite horrifyng 😨
```rust
trait T {
type A;
}
type Foo = <S as T>::A; // note that S isn't defined
fn main() {
Foo {}
}
```
While inferencing alias type `Foo = <S as T>::A`;
78c2bdce86/crates/hir-ty/src/infer.rs (L1388-L1398)
the error type `S` in it is substituted by inference var in L1396 above as below;
78c2bdce86/crates/hir-ty/src/infer/unify.rs (L866-L869)
This new inference var's index is `1`, as the type inferecing procedure here previously inserted another inference var into same `InferenceTable`.
But after that, the projection type made from the above then passed to the following function;
78c2bdce86/crates/hir-ty/src/traits.rs (L88-L96)
here, a whole new `InferenceTable` is made, without any inference var and in the L94, this table calls;
78c2bdce86/crates/hir-ty/src/infer/unify.rs (L364-L370)
And while registering `AliasEq` `obligation`, this obligation contains inference var `?1` made from the previous table, but this table has only one inference var `?0` made at L365.
So, the chalk panics when we try to canonicalize that obligation to register it, because the obligation contains an inference var `?1` that the canonicalizing table doesn't have.
Currently, we are calling `InferenceTable::new()` to do some normalizing, unifying or coercing things to some targets that might contain inference var that the new table doesn't have.
I think that this is quite dangerous footgun because the inference var is just an index that does not contain the information which table does it made from, so sometimes this "foreign" index might cause panic like this case, or point at the wrong variable.
This PR mitigates such behaviour simply by inserting sufficient number of inference vars to new table to avoid such problem.
This strategy doesn't harm current r-a's intention because the inference vars that passed into new tables are just "unresolved" variables in current r-a, so this is just making sure that such "unresolved" variables exist in the new table
