Hojun-Cho 37bffa5284 test: 995_self_rebuild — wwstage rebuilds itself byte-identical ...

Drives ww_ww (which already shells to 6c_ww/6a_ww/6l_ww) over each
wwstage tool's source and diffs the resulting binary against the
cstage-built canonical in $BIN. A green run means the toolchain
can recompile itself end-to-end without invoking cc, modulo the
cold-start binary that brings the wwstage into existence.

Stricter than `make bootstrap`: that loop pins wwdump's cgen
self-stabilising; this pins all five wwstage tools (6c, 6a, 6l,
ww, wwdump) round-tripping through the wwstage pipeline.

The .combined.ww refreshes are the expander picking up the
parser/cgen changes from the prior commit. selfhost/cmd/6c/
gains its main.combined.ww for the first time — 995 builds it,
994 reads it.

2026-05-11 11:41:12 +09:00

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