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Add way to express no-values with check-cfg

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This commit is contained in:
Urgau 2024-01-13 12:18:51 +01:00
parent 284cb714d2
commit 41b69aae91
10 changed files with 89 additions and 32 deletions
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4
compiler/rustc_interface/src/interface.rs
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@ -218,7 +218,9 @@ pub(crate) fn parse_check_cfg(dcx: &DiagCtxt, specs: Vec<String>) -> CheckCfg {
}
}
if values.is_empty() && !values_any_specified && !any_specified {
if !values_specified && !any_specified {
// `cfg(name)` is equivalent to `cfg(name, values(none()))` so add
// an implicit `none()`
values.insert(None);
} else if !values.is_empty() && values_any_specified {
error!(