Rollup of 9 pull requests #63489
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Rollup of 9 pull requests #63489
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This reverts commit e38e954. llvm were not able to optimize the code that well with the simplified mir. Closes: rust-lang#62993
A program like the following one:
```rust
enum E { A, B, C }
fn f(x: E) -> bool {
match x {
A | B => false,
C => true
}
}
```
is rejected by the compiler due to `E` variant paths not being in scope.
In this case `A`, `B` are resolved as pattern bindings and consequently
the pattern is considered invalid as the inner or-patterns do not bind
to the same set of identifiers.
This is expected but the compiler errors that follow could be surprising
or confusing to some users. This commit adds a help note explaining that
if the user desired to match against variants or consts, they should use
a qualified path. The note is restricted to cases where the identifier
starts with an upper-case sequence so as to reduce the false negatives.
Since this happens during resolution, there's no clean way to check what
the patterns match against. The syntactic criterium, however, is in line
with the convention that's assumed by the `non-camel-case-types` lint.
Co-Authored-By: Mazdak Farrokhzad <[email protected]>
Adds a closing parenthesis.
Use sharded maps for queries Based on rust-lang#61779. r? @gankro
…es-suggest-qualified-path, r=petrochenkov
Suggest using a qualified path in patterns with inconsistent bindings
A program like the following one:
```rust
enum E { A, B, C }
fn f(x: E) -> bool {
match x {
A | B => false,
C => true
}
}
```
is rejected by the compiler due to `E` variant paths not being in scope.
In this case `A`, `B` are resolved as pattern bindings and consequently
the pattern is considered invalid as the inner or-patterns do not bind
to the same set of identifiers.
This is expected but the compiler errors that follow could be surprising
or confusing to some users. This commit adds a help note explaining that
if the user desired to match against variants or consts, they should use
a qualified path. The help note is restricted to cases where the identifier
starts with an upper-case sequence so as to reduce the false negatives.
Since this happens during resolution, there's no clean way to check what
it is the patterns match against. The syntactic criterium, however, is in line
with the convention that's assumed by the `non-camel-case-types` lint.
Fixes rust-lang#50831.
… r=matthewjasper Revert "Simplify MIR generation for logical ops" This reverts commit e38e954. llvm were not able to optimize the code that well with the simplified mir. Closes: rust-lang#62993
resolve: Remove remaining special cases from built-in macros
Edition and definition sites of the macros are now also taken from the `#[rustc_builtin_macro]` definitions in `libcore`.
---
The edition switch may be a breaking change for `Rustc{Encodable,Decodable}` derives if they are used in combination with the unstable crate `serialize` from sysroot like this
```rust
extern crate serialize;
use serialize as rustc_serialize;
#[derive(RustcEncodable)]
struct S;
```
(see the updated `ui-fulldeps` tests).
…iplett docs: add stdlib env::var(_os) panic Closes rust-lang#63456
Regression test for rust-lang#56870 Closes rust-lang#56870.
Add tests for issue rust-lang#53598 and rust-lang#57700 Closes rust-lang#53598 and rust-lang#57700
Fixes rust-lang#63477 Adds a closing parenthesis.
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@bors r+ p=9 rollup=never |
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📌 Commit 9d29719 has been approved by |
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Rollup of 9 pull requests Successful merges: - #62108 (Use sharded maps for queries) - #63297 (Improve pointer offset method docs) - #63406 (Suggest using a qualified path in patterns with inconsistent bindings) - #63431 (Revert "Simplify MIR generation for logical ops") - #63449 (resolve: Remove remaining special cases from built-in macros) - #63461 (docs: add stdlib env::var(_os) panic) - #63473 (Regression test for #56870) - #63474 (Add tests for issue #53598 and #57700) - #63480 (Fixes #63477) Failed merges: r? @ghost
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☀️ Test successful - checks-azure |
This was referenced Aug 12, 2019
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Successful merges:
printlndocs. #63477)Failed merges:
r? @ghost