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Diffstat (limited to 'tests/ui/proc-macro/macro-rules-derive-cfg.rs')
-rw-r--r-- | tests/ui/proc-macro/macro-rules-derive-cfg.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/macro-rules-derive-cfg.rs b/tests/ui/proc-macro/macro-rules-derive-cfg.rs new file mode 100644 index 000000000..a221b9578 --- /dev/null +++ b/tests/ui/proc-macro/macro-rules-derive-cfg.rs @@ -0,0 +1,31 @@ +// 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 { + val: [bool; { + let a = #[cfg_attr(not(FALSE), rustc_dummy(first))] $expr; + 0 + }] + } + } +} + +produce_it!(#[cfg_attr(not(FALSE), rustc_dummy(second))] { + #![cfg_attr(not(FALSE), allow(unused))] + 30 +}); + +fn main() {} |