Proposal #74609: goroutine leak detection by using the garbage collector.

Author: VladSaiocUber

src/internal/goexperiment/exp_deadlockgc_off.go

@@ -120,4 +120,7 @@ type Flags struct {
 	// RandomizedHeapBase enables heap base address randomization on 64-bit
 	// platforms.
 	RandomizedHeapBase64 bool
+
+	// DeadlockGC enables the Deadlock GC implementation.
+	DeadlockGC bool
 }

src/internal/goexperiment/exp_deadlockgc_on.go

@@ -1221,7 +1221,7 @@ func (t *SemTable) Enqueue(addr *uint32) {
 	s.releasetime = 0
 	s.acquiretime = 0
 	s.ticket = 0
-	t.semTable.rootFor(addr).queue(addr, s, false)
+	t.semTable.rootFor(addr).queue(addr, s, false, false)
 }
 
 // Dequeue simulates dequeuing a waiter for a semaphore (or lock) at addr.