version = "0.2.189" -> "0.2.189+rb0.3.2", per local/AGENTS.md
"Version conventions": every Cat 2 fork is <upstream>+rb<branch>. The
label is what makes the fork traceable to both its upstream base and the
Red Bear branch it was built for.
+rb is build metadata, which semver ignores when matching, so ^0.2
requirements still resolve to the fork -- confirmed, the rust lockfile now
reads libc v0.2.189+rb0.3.2 from the path source. A -rb suffix would be
read as a pre-release and would NOT satisfy them, which is exactly why the
project mandates +rb.
Two things this surfaced:
- fork-upstream-map: libc moved from snapshot to diverged. The fork is
vendored from the crates.io PACKAGE, whose file set differs from the
upstream git tag by construction (no .github/, adds
.cargo_vcs_info.json), so a tag content-diff reported differences that
mean nothing -- 'missing files that exist in upstream' for files the
package never ships. diverged states the real relationship.
- local/recipes/dev/gcc16/.vendored-upstream added. Extracting GCC 16.1.0
put upstream's vendored Rust crates under local/recipes/*/source/, so
sync-versions.sh treated datafrog/log/polonius-engine as Cat 1 in-house
crates and wanted to stamp them 0.3.2. The marker is the documented
escape hatch (BUILD-SYSTEM.md section 7).
Both gates clean: verify-fork-versions reports no violations,
sync-versions --check reports no gcc16 drift.
local/sources/libc is libc 0.2.189 with src/unix/redox/mod.rs extended to
expose the waitid surface relibc already implements:
- idtype_t (= c_int, as relibc defines it)
- P_ALL / P_PID / P_PGID
- CLD_EXITED / KILLED / DUMPED / TRAPPED / STOPPED / CONTINUED
- extern fn waitid(idtype_t, id_t, *mut siginfo_t, c_int) -> c_int
All of it is real in relibc -- src/header/sys_wait/mod.rs defines the
types and constants, and `nm libc.a` shows `T waitid` -- but the libc
crate's Redox bindings never exposed any of it, and still do not as of
0.2.189. Any crate calling waitid therefore cannot build for
x86_64-unknown-redox:
error[E0531]: cannot find unit struct, unit variant or constant
`CLD_EXITED` in crate `libc`
which breaks nix, and through it ctrlc and rustc's bootstrap tooling --
the last thing blocking rust-native.
Values and types come from relibc, not from Linux. Every non-Redox target
is byte-for-byte upstream 0.2.189, so host builds are unaffected. Wired
into the rust workspace via [patch.crates-io]; the fork type-checks for
x86_64-unknown-redox.
Upstream-reportable: this gap belongs in the libc crate.
vasilito