Type Alias rustc_session::config::cfg::Cfg

source ·
pub type Cfg = FxIndexSet<(Symbol, Option<Symbol>)>;
Expand description

The parsed --cfg options that define the compilation environment of the crate, used to drive conditional compilation.

An FxIndexSet is used to ensure deterministic ordering of error messages relating to --cfg.

Aliased Type§

struct Cfg { /* private fields */ }


Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 56 bytes