Constant rustc_metadata::schema::METADATA_HEADER [−][src]
pub const METADATA_HEADER: &'static [u8; 12]=
&[0, 0, 0, 0, b'r', b'u', b's', b't', 0, 0, 0, METADATA_VERSION]
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
Metadata header which includes METADATA_VERSION
.
To get older versions of rustc to ignore this metadata,
there are 4 zero bytes at the start, which are treated
as a length of 0 by old compilers.
This header is followed by the position of the CrateRoot
,
which is encoded as a 32-bit big-endian unsigned integer,
and further followed by the rustc version string.