On Wednesday, 20 October 2021 at 04:14:37 UTC, Dave P. wrote:
I am confused on how casting structs works. According to point
9 of https://dlang.org/spec/expression.html#CastExpression:
Casting a value v to a struct S, when value is not a struct of
the same type, is equivalent to:
```d
S(v)
```
It says `value v` and `struct S`, but you go on to cast a struct
into another struct.
Point 9 is exhibited by
```d
struct Foo {
int i;
}
unittest {
int n = 2;
Foo f = cast(Foo) n;
}
```
However, the following program compiles and the resulting
execution indicates the bits are just being reinterpreted.
...
Is this a bug in my understanding? Bug in the spec? Bug in the
compiler?
It looks at least like a gap in the spec. Adding "or a struct to
another struct" to point six would fit the observed behavior.
