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error[E0308]: mismatched types
--> $DIR/issue-26480.rs:16:19
|
LL | write(stdout, $arr.as_ptr() as *const i8,
| ----- arguments to this function are incorrect
LL | $arr.len() * size_of($arr[0]));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `u64`, found `usize`
...
LL | write!(hello);
| ------------- in this macro invocation
|
note: function defined here
--> $DIR/issue-26480.rs:2:8
|
LL | fn write(fildes: i32, buf: *const i8, nbyte: u64) -> i64;
| ^^^^^
= note: this error originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
help: you can convert a `usize` to a `u64` and panic if the converted value doesn't fit
|
LL | ($arr.len() * size_of($arr[0])).try_into().unwrap());
| + +++++++++++++++++++++
error[E0605]: non-primitive cast: `{integer}` as `()`
--> $DIR/issue-26480.rs:22:19
|
LL | ($x:expr) => ($x as ())
| ^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
...
LL | cast!(2);
| -------- in this macro invocation
|
= note: this error originates in the macro `cast` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0308, E0605.
For more information about an error, try `rustc --explain E0308`.
|
