feat(diagnostics): native crash backtrace capture (RFC 0020 clause 7) - #69
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PostHog's Kotlin uncaught-exception handler cannot see native crashes — Heide's v0.1.21 emoji crash produced no error-tracking issue at all. Install SIGSEGV/SIGBUS/SIGABRT/SIGFPE handlers at JNI_OnLoad that log an _Unwind_Backtrace (symbolised via dladdr) under the DasherNativeCrash tag, then restore defaults and re-raise so the platform tombstone flow still records the crash. Next field-reported native crash becomes a readable stack in logcat. Signed-off-by: will wade <willwade@gmail.com>
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Native crashes are invisible to PostHog (Kotlin uncaught handler sees nothing) — Heide's v0.1.21 emoji crash on Android 13 left no trace. This installs signal handlers at JNI_OnLoad (SIGSEGV/SIGBUS/SIGABRT/SIGFPE) that log an
_Unwind_Backtracesymbolised via dladdr under theDasherNativeCrashlogcat tag, then re-raise so tombstones still generate.Not async-signal-safe perfection (dladdr in a handler) — a garbled backtrace beats none. Unblocks RFC 0020 clause 7: the next field-reported native crash becomes a readable stack.