diff options
Diffstat (limited to 'src/test/ui/proc-macro/expand-to-derive.rs')
-rw-r--r-- | src/test/ui/proc-macro/expand-to-derive.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/expand-to-derive.rs b/src/test/ui/proc-macro/expand-to-derive.rs new file mode 100644 index 000000000..ff2876e84 --- /dev/null +++ b/src/test/ui/proc-macro/expand-to-derive.rs @@ -0,0 +1,34 @@ +// check-pass +// compile-flags: -Z span-debug --error-format human +// aux-build:test-macros.rs + +#![feature(rustc_attrs)] + +#![no_std] // Don't load unnecessary hygiene information from std +extern crate std; + +#[macro_use] +extern crate test_macros; + +macro_rules! expand_to_derive { + ($item:item) => { + #[derive(Print)] + struct Foo { + #[cfg(FALSE)] removed: bool, + field: [bool; { + $item + 0 + }] + } + }; +} + +expand_to_derive! { + #[cfg_attr(not(FALSE), rustc_dummy)] + struct Inner { + #[cfg(FALSE)] removed_inner_field: bool, + other_inner_field: u8, + } +} + +fn main() {} |