rust/tests/ui/proc-macro/macro-rules-derive-cfg.rs
Nicholas Nethercote b7e7f6e903 Tweak tests/ui/proc-macro/macro-rules-derive-cfg.rs.
- Trim some unnecessary fat from the type declaration.
- Add another attribute, to make it a stronger test of `cfg_attr`
  processing. Note that the current output is incorrect, because it
  duplicates the added attribute. The next commit will fix this.
2024-08-23 14:42:59 +10:00

30 lines
649 B
Rust

//@ check-pass
//@ compile-flags: -Z span-debug --error-format human
//@ aux-build:test-macros.rs
#![feature(rustc_attrs)]
#![feature(stmt_expr_attributes)]
#![no_std] // Don't load unnecessary hygiene information from std
extern crate std;
#[macro_use]
extern crate test_macros;
macro_rules! produce_it {
($expr:expr) => {
#[derive(Print)]
struct Foo(
[bool; #[cfg_attr(not(FALSE), rustc_dummy(first))] $expr]
);
}
}
produce_it!(#[cfg_attr(not(FALSE), rustc_dummy(second))] {
#![cfg_attr(not(FALSE), rustc_dummy(third))]
#[cfg_attr(not(FALSE), rustc_dummy(fourth))]
30
});
fn main() {}