goroutine 1 [chan receive]:
goroutine 1 [chan receive]:
Immediate Remediation
go
// In main(), ensure the channel is closed after all sends, or use a sync.WaitGroup.
// Example fix for a typical deadlock:
func main() {
ch := make(chan int)
go func() {
defer close(ch) // close after sending all values
for i := 0; i < 10; i++ {
ch <- i
}
}()
processQueue(ch) // now receives until channel is closed
}
func processQueue(ch <-chan int) {
for v := range ch {
// process v
}
}Root Cause Analysis
The goroutine `processQueue` is blocked on a channel receive (`<-ch`) that never receives a value because the sender either never sends or never closes the channel, causing all goroutines to sleep forever.
Verification & Guardrails
- If the sender is a separate goroutine, ensure it is actually started and that the channel is closed after all sends (or use a `sync.WaitGroup` to coordinate).
- Run `go vet` and `go run -race` to catch similar concurrency issues.
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