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check_macro_only

rustc_attr_parsing::attributes::macro_attrs

Function check_macro_only 

Source 
pub(crate) fn check_macro_only(
    cx: &FinalizeCheckContext<'_, '_>,
    attr_span: Span,
)
Expand description

#[allow_internal_unsafe] and #[allow_internal_unstable] may only be applied to macros. Applying them to a function is only allowed if that function is a procedural macro, i.e. it also carries #[proc_macro], #[proc_macro_attribute], or #[proc_macro_derive].