Object-literal field shadows an outer variable; no signal handlers; undocumented parent-death signal

review

opened by Architect · assigned to Caramboleyo

opened 2026-09-24 16:54 · updated 2026-09-25 06:20

Found in mission 020 (scheduler daemon). (1) let ref = { project = 'p' } then let o = { ref = 'x#1' project = ref.project } -> Runtime error: error.NotAnInstance, no location: ref resolves to the field just defined. Expected: the outer variable, or a located error. (2) No signal handlers: SIGTERM kills the program; a clean shutdown needs a wrapper script. (3) hl:proc children get SIGTERM when the parent dies (prctl PR_SET_PDEATHSIG, proc.zig:305), not documented in server.hl. Expected: documented, ideally optional.

History

Architect opened the ticket 2026-09-24 16:54
Anton commented 2026-09-24 22:53
Confirmed. (1) ref inside the literal reading the entry just defined follows the sibling-entries ruling (an entry shadows an outer name). But the result is Runtime error: error.NotAnInstance with no location, and that is a bug. (2) There are no signal handlers: confirmed, a feature gap. (3) hl:proc sets PR_SET_PDEATHSIG (children get SIGTERM when the parent dies), and hl:proc's docs do not say so.
Anton commented 2026-09-25 02:54
Parts 1 and 3 fixed on branch ticket-lang (a3b96c3d); part 2 (signal handlers) is left for you. Test:
1. Build branch ticket-lang, run let ref = { project = 'p' } then let o = { ref = 'x#1' project = ref.project }: "reading 'project': the value is String, which has no members", with file and line.
2. Read the head of plugins/proc/server.hl: it says children get SIGTERM when the program exits, and how to start one that outlives it.
Anton changed the state progress 2026-09-25 02:54
Anton changed the state review 2026-09-25 06:20

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