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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/proc-macro/cfg-eval.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/proc-macro/cfg-eval.rs')
-rw-r--r-- | tests/ui/proc-macro/cfg-eval.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/cfg-eval.rs b/tests/ui/proc-macro/cfg-eval.rs new file mode 100644 index 000000000..fa6d015e4 --- /dev/null +++ b/tests/ui/proc-macro/cfg-eval.rs @@ -0,0 +1,37 @@ +// check-pass +// compile-flags: -Z span-debug +// aux-build:test-macros.rs + +#![feature(cfg_eval)] +#![feature(proc_macro_hygiene)] +#![feature(stmt_expr_attributes)] +#![feature(rustc_attrs)] +#![no_std] // Don't load unnecessary hygiene information from std +extern crate std; + +#[macro_use] +extern crate test_macros; + +#[cfg_eval] +#[print_attr] +struct S1 { + #[cfg(FALSE)] + field_false: u8, + #[cfg(all(/*true*/))] + #[cfg_attr(FALSE, unknown_attr)] + #[cfg_attr(all(/*true*/), allow())] + field_true: u8, +} + +#[cfg_eval] +#[cfg(FALSE)] +struct S2 {} + +fn main() { + // Subtle - we need a trailing comma after the '1' - otherwise, `#[cfg_eval]` will + // turn this into `(#[cfg(all())] 1)`, which is a parenthesized expression, not a tuple + // expression. `#[cfg]` is not supported inside parenthesized expressions, so this will + // produce an error when attribute collection runs. + let _ = #[cfg_eval] #[print_attr] #[cfg_attr(not(FALSE), rustc_dummy)] + (#[cfg(FALSE)] 0, #[cfg(all(/*true*/))] 1,); +} |