Fixes https://github.com/rust-lang/rust/issues/28692
Fixes https://github.com/rust-lang/rust/issues/28992
Fixes some other similar issues (see the tests)
[breaking-change], needs crater run (cc @brson or @alexcrichton )
The pattern with parens `UnitVariant(..)` for unit variants seems to be popular in rustc (see the second commit), but mostly used by one person (@nikomatsakis), according to git blame. If it causes breakage on crates.io I'll add an exceptional case for it.
Fixes#13677
This does the same sort of suggestion for misspelt macros that we already do for misspelt identifiers.
Example. Compiling this program:
```rust
macro_rules! foo {
($e:expr) => ( $e )
}
fn main() {
fob!("hello!");
}
```
gives the following error message:
```
/Users/mcp/temp/test.rs:7:5: 7:8 error: macro undefined: 'fob!'
/Users/mcp/temp/test.rs:7 fob!("hello!");
^~~
/Users/mcp/temp/test.rs:7:5: 7:8 help: did you mean `foo`?
/Users/mcp/temp/test.rs:7 fob!("hello!");
```
I had to move the levenshtein distance function into libsyntax for this. Maybe this should live somewhere else (some utility crate?), but I couldn't find a crate to put it in that is imported by libsyntax and the other rustc crates.
under OpenBSD and Bitrig, it is an error to pass an empty argv
argument to execve(2). It results the test fail as execve(2) don't exec
and set errno to EINVAL.
instead, make argv with two arguments (in order to differenciate the
initial call, from the execve call).
nodes in statement position.
Extended #[cfg] folder to allow removal of statements, and
of expressions in optional positions like expression lists and trailing
block expressions.
Extended lint checker to recognize lint levels on expressions and
locals.
The graph extent mechanism is not good. I have some ideas for a better replacement, but this PR simply removes it. It also stops recursing on statement scopes and processes them using an "on the heap" stack, which fixes#29466.
r? @dotdash
Replace `TypeNsDef` and `ValueNsDef` with a more general type `NsDef`.
Define a newtype `NameBinding` for `Rc<RefCell<Option<NsDef>>>` and refactor `NameBindings` to be a `NameBinding` for each namespace.
Replace uses of `NameBindings` with `NameBinding` where only one binding is being used (in `NamespaceResult`, `Target,` etc).
Refactor away `resolve_definition_of_name_in_module` and `NameDefinition`, fixing issue #4952.
Since fat pointers do not qualify as structural types, they got copied
using load_ty and store_ty, which means that we load an FCA and use
extractvalue to get the components of the fat pointer. This breaks
certain optimizations in LLVM.
Found via apasel422/ref_count#13
This commit fixes a bug where a crate could fail to compile depending on the
order of `extern crate` directives at the top of the crate. Specifically, if the
same crate is found at two locations, then if it's loaded first via `--extern`
it will not emit a duplicate warning, but if it's first loaded transitively
via a dep and *then* via `--extern` an error will be emitted.
The loader was tweaked to catch this scenario and coalesce the loading of these
two crates to prevent errors from being emitted.
Since fat pointers do not qualify as structural types, they got copied
using load_ty and store_ty, which means that we load an FCA and use
extractvalue to get the components of the fat pointer. This breaks
certain optimizations in LLVM.
Found via apasel422/ref_count#13
This commit fixes a bug where a crate could fail to compile depending on the
order of `extern crate` directives at the top of the crate. Specifically, if the
same crate is found at two locations, then if it's loaded first via `--extern`
it will not emit a duplicate warning, but if it's first loaded transitively
via a dep and *then* via `--extern` an error will be emitted.
The loader was tweaked to catch this scenario and coalesce the loading of these
two crates to prevent errors from being emitted.
