Closed
Conversation
Previously, attributes on 'if' expressions (e.g. #[attr] if true {})
were disallowed during parsing. This made it impossible for macros to
perform any custom handling of such attributes (e.g. stripping them
away), since a compilation error would be emitted before they ever had a
chance to run.
This PR permits attributes on 'if' expressions ('if-attrs' from here on).
Both built-in attributes (e.g. `#[allow]`, `#[cfg]`) are supported.
We still do *not* accept attributes on 'other parts' of an if-else
chain. That is, the following code snippet still fails to parse:
```rust
if true {} #[attr] else if false {} else #[attr] if false {} #[attr]
else {}
```
Additionally whenever possible match C API provided by the LLVM.
Although `stack_overflow::init` runs very early in the process, even before `main`, there may already be signal handlers installed for things like the address sanitizer. In that case, just leave it alone, and don't bother trying to allocate our own signal stacks either.
…=Centril
Permit attributes on 'if' expressions
Previously, attributes on 'if' expressions (e.g. `#[attr] if true {}`)
were disallowed during parsing. This made it impossible for macros to
perform any custom handling of such attributes (e.g. stripping them
away), since a compilation error would be emitted before they ever had a
chance to run.
This PR permits attributes on 'if' expressions ('if-attrs' from here on).
Both built-in attributes (e.g. `#[allow]`, `#[cfg]`) and proc-macro attributes are supported.
We still do *not* accept attributes on 'other parts' of an if-else
chain. That is, the following code snippet still fails to parse:
```rust
if true {} #[attr] else if false {} else #[attr] if false {} #[attr]
else {}
```
Closes rust-lang#68618
…nison Extend search I realized that when looking for "struct:String" in the rustdoc search for example, the "in arguments" and "returned" tabs were always empty. After some investigation, I realized it was because we only provided the name, and not the type, making it impossible to pass the "type filtering" check. To resolve this, I added the type alongside the name. Note for the future: we could improve this by instead only registering the path id and use the path dictionary directly. The only problem with that solution (which I already tested) is that it becomes complicated for types in other crates. It'd force us to handle both case with an id and a case with `(name, type)`. I found the current PR big enough to not want to provide it directly. However, I think this is definitely worth it to make it work this way in the future. About the two tests I added: they don't have much interest except checking that we actually have something returned in the search in the cases of a type filtering with and without literal search. I also had to update a bit the test script to add the new locally global (haha) variable I created (`NO_TYPE_FILTER`). I added this variable to make the code easier to read than just "-1". r? @kinnison cc @ollie27
…=nagisa,smaeul Don't use static crt by default when build proc-macro Don't check value of `crt-static` when build proc-macro crates, since they are always built dynamically. For more information, see rust-lang/cargo#7563 (comment) I hope this will fix issues about compiling `proc_macro` crates on musl host without bring more issues. Note: I can't test this on my musl host locally, because I encounter this issue when bootstraping from a beta snapshot. Fix rust-lang/cargo#7563
unix: Don't override existing SIGSEGV/BUS handlers Although `stack_overflow::init` runs very early in the process, even before `main`, there may already be signal handlers installed for things like the address sanitizer. In that case, just leave it alone, and don't bother trying to allocate our own signal stacks either. Fixes rust-lang#69524.
Ensure that validity only raises validity errors For now, only as a debug-assertion (similar to const-prop detecting errors that allocate). Now includes rust-lang#69646. [Relative diff](RalfJung/rust@layout-visitor...RalfJung:validity-errors). r? @oli-obk
librustc_codegen_llvm: Use slices in preference to 0-terminated strings Additionally whenever possible match C API provided by the LLVM.
Contributor
Author
|
@bors r+ p=1001 rollup=never |
Collaborator
|
📌 Commit 6cf5a14 has been approved by |
Collaborator
|
🌲 The tree is currently closed for pull requests below priority 1000, this pull request will be tested once the tree is reopened |
bors
added
the
S-waiting-on-bors
Collaborator
bors
added a commit
that referenced
this pull request
Mar 9, 2020
Rollup of 6 pull requests Successful merges: - #69201 (Permit attributes on 'if' expressions) - #69402 (Extend search) - #69519 ( Don't use static crt by default when build proc-macro) - #69685 (unix: Don't override existing SIGSEGV/BUS handlers) - #69762 (Ensure that validity only raises validity errors) - #69779 (librustc_codegen_llvm: Use slices in preference to 0-terminated strings) Failed merges: r? @ghost
Member
Contributor
|
The job Click to expand the log.I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact |
Collaborator
|
💔 Test failed - checks-azure |
bors
added
S-waiting-on-review
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
10 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Successful merges:
Failed merges:
r? @ghost