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Rollup of 4 pull requests - #65229
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- The attribute is behind a feature gate. - Error if both #[naked] and #[track_caller] are applied to the same function. - Error if #[track_caller] is applied to a non-function item. - Error if ABI is not "rust" - Error if #[track_caller] is applied to a trait function. Error codes and descriptions are pending.
Co-Authored-By: Mazdak Farrokhzad <twingoow@gmail.com>
Prevents number collision with another approved PR.
Implement (HashMap) Entry::insert as per rust-lang#60142 Implementation of `Entry::insert` as per @SimonSapin's comment on rust-lang#60142. This requires a patch to hashbrown: ```diff diff --git a/src/rustc_entry.rs b/src/rustc_entry.rs index fefa5c3..7de8300 100644 --- a/src/rustc_entry.rs +++ b/src/rustc_entry.rs @@ -546,6 +546,32 @@ impl<'a, K, V> RustcVacantEntry<'a, K, V> { let bucket = self.table.insert_no_grow(self.hash, (self.key, value)); unsafe { &mut bucket.as_mut().1 } } + + /// Sets the value of the entry with the RustcVacantEntry's key, + /// and returns a RustcOccupiedEntry. + /// + /// # Examples + /// + /// ``` + /// use hashbrown::HashMap; + /// use hashbrown::hash_map::RustcEntry; + /// + /// let mut map: HashMap<&str, u32> = HashMap::new(); + /// + /// if let RustcEntry::Vacant(v) = map.rustc_entry("poneyland") { + /// let o = v.insert_and_return(37); + /// assert_eq!(o.get(), &37); + /// } + /// ``` + #[inline] + pub fn insert_and_return(self, value: V) -> RustcOccupiedEntry<'a, K, V> { + let bucket = self.table.insert_no_grow(self.hash, (self.key, value)); + RustcOccupiedEntry { + key: None, + elem: bucket, + table: self.table + } + } } impl<K, V> IterMut<'_, K, V> { ``` This is also only an implementation for HashMap. I tried implementing for BTreeMap, but I don't really understand BTreeMap's internals and require more guidance on implementing the equivalent `VacantEntry::insert_and_return` such that it returns an `OccupiedEntry`. Notably, following the original PR's modifications I end up needing a `Handle<NodeRef<marker::Mut<'_>, _, _, marker::LeafOrInternal>, _>` while I only have a `Handle<NodeRef<marker::Mut<'_>, _, _, marker::Internal>, _>` and don't know how to proceed. (To be clear, I'm not asking for guidance right now; I'd be happy getting only the HashMap implementation — the subject of this PR — reviewed and ready, and leave the BTreeMap implementation for a latter PR.)
`#[track_caller]` feature gate (RFC 2091 1/N) RFC text: https://github.com/rust-lang/rfcs/blob/master/text/2091-inline-semantic.md Tracking issue: rust-lang#47809 I started with @ayosec's commit to add the feature gate with tests and rebased it onto current master. I fixed up some tidy lints and added a test.
Suggest to add `move` keyword for generator capture Closesrust-lang#64382 r? @estebank
add more info in debug traces for gcu merging to help in investigation of CGU partitioning problems e.g rust-lang#64913
Centril
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Oct 9, 2019
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@bors r+ p=4 rollup=never |
bors
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Oct 9, 2019
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📌 Commit e27f029 has been approved by |
bors
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Oct 9, 2019
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Oct 9, 2019
Rollup of 4 pull requests Successful merges: - #64656 (Implement (HashMap) Entry::insert as per #60142) - #65037 (`#[track_caller]` feature gate (RFC 2091 1/N)) - #65166 (Suggest to add `move` keyword for generator capture) - #65175 (add more info in debug traces for gcu merging) Failed merges: r? @ghost
bors
commented
Oct 9, 2019
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☀️ Test successful - checks-azure |
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Successful merges:
#[track_caller]feature gate (RFC 2091 1/N) #65037 (#[track_caller]feature gate (RFC 2091 1/N))movekeyword for generator capture #65166 (Suggest to addmovekeyword for generator capture)Failed merges:
r? @ghost