Detect double reference when applying binary op #38617
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pnkfelix
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Thanks also to @rkruppe for providing the lion's share of the review effort here. |
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@bors r- Travis failed and it looks legit (but trivial to fix) |
```rust
let vr = v.iter().filter(|x| {
x % 2 == 0
});
```
will now yield the following compiler output:
```bash
ERROR binary operation `%` cannot be applied to type `&&_`
NOTE this is a reference of a reference to a type that `%` can be applied to,
you need to dereference this variable once for this operation to work
NOTE an implementation of `std::ops::Rem` might be missing for `&&_`
```
The first NOTE is new.
Bug rust-lang#33877
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… deref. drive-by: fix merge conflict; fix test expected error output post rebase.
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@bors r=pnkfelix |
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📌 Commit 98218b3 has been approved by |
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@bors rollup |
steveklabnik
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Jan 4, 2017
Detect double reference when applying binary op
``` rust
let vr = v.iter().filter(|x| {
x % 2 == 0
});
```
will now yield the following compiler output:
``` bash
ERROR binary operation `%` cannot be applied to type `&&_`
NOTE this is a reference of a reference to a type that `%` can be applied to,
you need to dereference this variable once for this operation to work
NOTE an implementation of `std::ops::Rem` might be missing for `&&_`
```
The first NOTE is new.
Fix rust-lang#33877
----
Thanks to @estebank for providing the original PR rust-lang#34420 (of which this is a tweaked rebase).
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@bors r- |
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@bors r+ rollup |
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📌 Commit 98218b3 has been approved by |
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@bors r- |
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alexcrichton
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to alexcrichton/rust
that referenced
this pull request
Jan 28, 2017
Detect double reference when applying binary op
``` rust
let vr = v.iter().filter(|x| {
x % 2 == 0
});
```
will now yield the following compiler output:
``` bash
ERROR binary operation `%` cannot be applied to type `&&_`
NOTE this is a reference of a reference to a type that `%` can be applied to,
you need to dereference this variable once for this operation to work
NOTE an implementation of `std::ops::Rem` might be missing for `&&_`
```
The first NOTE is new.
Fix rust-lang#33877
----
Thanks to @estebank for providing the original PR rust-lang#34420 (of which this is a tweaked rebase).
bors
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that referenced
this pull request
Jan 28, 2017
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will now yield the following compiler output:
The first NOTE is new.
Fix #33877
Thanks to @estebank for providing the original PR #34420 (of which this is a tweaked rebase).