This crate contains implementations of built-in macros and other code generating facilities injecting code into the crate before it is lowered to HIR.
The compiler code necessary to support the cfg! extension, which expands to
false based on whether the given cfg matches the
current compilation environment.
Implementation of the
#[cfg_accessible(path)] attribute macro.
Attributes injected into the crate root from command line using
The compiler code necessary to implement the