The smoke test only exercised steady-state rendering and killed waybar with
SIGTERM, so whole crash classes were invisible: exit-time use-after-free
(#5182), module state transitions (#5183) and hardware-backed modules (#5179).
Add tiers that hit those paths under ASan (+ _GLIBCXX_ASSERTIONS):
- lib.sh: assert_clean_exit (SIGINT teardown -> checks segfault/abort + ASan
report emitted during destruction), output hotplug helpers, signal/reload,
WAYBAR_WRAP hook, opt-in leak detection.
- lifecycle.sh (gating): clean exit, runtime output hotplug (Bar/module
destroy), toggle/reload churn, fast-interval teardown race (#5182 class).
- fuzz.sh (gating): pathological custom-backend output (empty, nonzero exit,
invalid JSON, huge, non-UTF8, empty format).
- coverage.sh (gating): every Factory module must be classified for smoke
coverage; a new unlisted module fails the job (#5179 slipped through).
- modules.sh: also render the whole matrix inside a group; SIGINT teardown per
module instead of SIGTERM.
- state.sh (best-effort): real mpd driven through an empty queue (#5183) +
stop/clear; pulseaudio + slider on a null sink.
- hardware.sh (best-effort): backlight, backlight/slider (#5179) and battery
via umockdev.
- leakcheck.sh (report-only): clean-exit run under LSan.
Turn the smoke test into a real runtime safety net. Waybar is now built with
AddressSanitizer and exercised end to end in a headless compositor:
- Tier 0: run everything under ASan; fail on ASan reports and Gtk/GLib
criticals in the log (lib.sh assert_clean)
- Tier 1: per-module render matrix (modules.sh) — each headless-safe module
rendered in isolation
- Tier 2: pointer interaction (interact.sh) — inject clicks via sway, assert
on-click side effect and format-alt toggle; AT-SPI assertions (a11y.sh/.py)
check module labels semantically instead of by pixels
- Tier 3: layout matrix (positions.sh) — top/bottom/left + HiDPI scale 2;
second compositor run under labwc
Shared helpers extracted to lib.sh. Adds a workflow_dispatch `bless` input to
regenerate the golden reference in one click. Trigger push only on master to
avoid duplicate PR runs. AT-SPI and labwc steps are continue-on-error.
Alex