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Document assignment expression as coercion site #1954

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Document assignment expression as coercion site #1954

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10 changes: 10 additions & 0 deletions src/type-coercions.md
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Expand Up @@ -78,6 +78,16 @@ r[coerce.site.return]
}
```

r[coerce.site.assignment]
* Assigned value operands in assignment expressions

For example, `y` is coerced to have type `&i8` in the following:
```rust
let mut x = &0i8;
let y = &mut 42i8;
x = y;
```

r[coerce.site.subexpr]
If the expression in one of these coercion sites is a coercion-propagating
expression, then the relevant sub-expressions in that expression are also
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