deps: bump posthog-telemetry to 4cd2256 (teardown SIGSEGV fix)#95
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The 0433745 pin can SIGSEGV at process exit: its atexit shutdown handler drains the telemetry queue, constructing new httplib Clients whose ctor regex (a function-local static, destroyed before the handler runs) is already dead. Deterministic crash reproduced in quack-oauth's DuckDB v1.5.3 statically-linked test binary (exit 139 after all tests pass); same mechanism applies to any consumer with events still queued at exit. New pin (DataZooDE/posthog-telemetry#4): Stop() discards pending tasks instead of draining them, and Instance() pre-warms httplib's statics before registering the atexit handler.
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Bumps the shared
posthog-telemetrysubmodule from0433745to4cd2256(current posthog-telemetry main).Why
0433745can SIGSEGV at process exit: its atexit shutdown handler drains the telemetry queue, constructing new httplibClients whose URL-parsing regex — a function-local static already destroyed at that point — gets dereferenced dead. Reproduced deterministically in quack-oauth (DuckDB v1.5.3 statically-linked unittest binary, exit 139 after all tests pass; gdb stack in DataZooDE/posthog-telemetry#4). The same mechanism fires in any consumer with telemetry events still queued at exit.New pin
DataZooDE/posthog-telemetry#4:
Stop()discards pending tasks (no new network I/O once shutdown begins) andInstance()pre-warms httplib's function-local statics before registering the atexit handler.Verification
Part of the portfolio-wide sweep after DataZooDE/quack-oauth#8.
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