const Len = enum(u13) This footer is trailed (before the traces) by Extended. The high bits of the alignment are encoded as the offset from extended_start.
This may be set even if Extended is not strictly necesary as a result of resizes and remaps.
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309 const Len = enum(u13) {
_,
/// This footer is trailed (before the traces) by `Extended`.
/// The high bits of the alignment are encoded as the offset from `extended_start`.
///
/// This may be set even if `Extended` is not strictly necesary
/// as a result of resizes and remaps.
const extended_start: u13 = math.maxInt(u13) - ((@bitSizeOf(usize) - 1) >> 2);
}