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