Fix wasm compile source race

2026-07-13 22:47:48 +00:00
parent 36ea0cd2a5
commit 096138d6a1
3 changed files with 103 additions and 17 deletions
@@ -365,7 +365,10 @@ header free-functions are `inline`. The wasm backend exposes only declarations
  its permissions and proves the next CLI request compiles it, then sends 48
  requests and asserts the observed worker PID set does not exceed
  `WORKER_COUNT`, guarding against accidental reintroduction of request-count
-  recycling.
+  recycling. It also races a source edit against an active unit compile after
+  the generated C++ snapshot has been written. The compiler must either retry
+  and serve the post-edit source or fail closed; it must never stamp current
+  source metadata onto wasm produced from an older snapshot.
  `scripts/test_cold_component_deadline.sh` separately compiles a deliberately
  cold component that exceeds the development epoch window and proves the
  parent request still renders it. The dependency-invalidation gate also holds