test: with data race

jizhuozhi · Jul 21, 2024 · 258434c · 258434c
1 parent f300811
commit 258434c
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diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
@@ -22,7 +22,7 @@ jobs:
         go-version: '1.18'
 
     - name: Test
-      run: go test -v ./... -coverprofile=coverage.out -covermode=atomic
+      run: go test -race -coverprofile=coverage.out -covermode=atomic -v ./...
 
     - name: Upload coverage reports to Codecov
       uses: codecov/codecov-action@v4.0.1

diff --git a/future.go b/future.go
@@ -95,6 +95,9 @@ func (s *state[T]) get() (T, error) {
 		}
 		if atomic.CompareAndSwapUint64(&s.state, st, st+1) {
 			runtime_Semacquire(&s.sema)
+			if (atomic.LoadUint64(&s.state)&maskState)>>32 != stateDone {
+				panic("sync: notified before state has done")
+			}
 			return s.val, s.err
 		}
 	}