Malte Ubl and Claude Opus 5.5
39326c55be
runtime: ship child.off/signalCode in a gated unit
...
Adding the six new entry points (scr_child_off_spawn/_exit/_close/_error,
scr_child_has_signal_code, scr_child_signal_code) to scr_child.c changed
the executable of every program that links the unit, although none of
them calls the new functions and IR and LLVM stayed identical: the extra
functions grow the unit's `.eh_frame` contribution, and the linker's
frame bookkeeping for the retained sections changes with it (the first
visible difference is the phdr sizes at byte offset 208). Appending them
after the unit's own functions does not help — the unit's frame section
still differs, so all 89 corpus programs that link scr_child.o got a
different binary.
Move the entries into scr_child_lifecycle.c, a unit of their own
selected only by programs that use them (feature childLifecycle, the
scr_dyn_handle_props.c pattern: the matrix's optional source list, the
RUNTIME_FEATURE_RULES rule for child.offSpawn/offExit/offClose/offError/
signalCode, and the link-feature plumbing through the executable cache,
CcOptions and RUNTIME_UNITS). scr_child.c keeps its original content and
layout; the new unit reads its registries through scr_child_private.h,
which holds the per-platform ScrChild layout both units compile against.
A program that does not call the new entries links exactly the units it
did before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com >
2026-10-28 05:38:17 -07:00
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