b0.Event("GoStart", trace.GoID(4), testgen.Seq(1))
	b0.Event("GoSyscallBegin", testgen.Seq(2), testgen.NoStack)
	b0.Event("GoDestroySyscall")
	b0.Event("GoCreateSyscall", trace.GoID(4))
	b0.Event("GoSyscallEnd")
	b0.Event("GoSyscallBegin", testgen.Seq(3), testgen.NoStack)
	b0.Event("GoDestroySyscall")

GoCreateSyscall dt=1 new_g=4
ProcStatus dt=1 p=0 pstatus=2
ProcStart dt=1 p=0 p_seq=1
GoSyscallEndBlocked dt=1
GoStart dt=1 g=4 g_seq=1
GoSyscallBegin dt=1 p_seq=2 stack=0
GoDestroySyscall dt=1
GoCreateSyscall dt=1 new_g=4
GoSyscallEnd dt=1
GoSyscallBegin dt=1 p_seq=3 stack=0
GoDestroySyscall dt=1
EventBatch gen=1 m=18446744073709551615 time=0 size=5
Frequency freq=15625000
EventBatch gen=1 m=18446744073709551615 time=0 size=1
Stacks

-- expect --
SUCCESS
-- trace --
Trace Go1.22
EventBatch gen=1 m=0 time=0 size=21
ProcStatus dt=0 p=0 pstatus=1
GoStatus dt=0 g=1 m=0 gstatus=2
GoSyscallBegin dt=0 p_seq=1 stack=0
GoSyscallEnd dt=0
GoSyscallBegin dt=0 p_seq=2 stack=0
GoSyscallEndBlocked dt=0
EventBatch gen=1 m=1 time=0 size=14
ProcStatus dt=0 p=2 pstatus=1
GoStatus dt=0 g=2 m=1 gstatus=2
ProcSteal dt=0 p=0 p_seq=3 m=0
EventBatch gen=1 m=18446744073709551615 time=0 size=5

	b0.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning)
	b0.Event("GoStatus", trace.GoID(1), trace.ThreadID(0), go122.GoRunning)
	b0.Event("GoSyscallBegin", testgen.Seq(1), testgen.NoStack)
	b0.Event("GoSyscallEnd")
	b0.Event("GoSyscallBegin", testgen.Seq(2), testgen.NoStack)
	b0.Event("GoSyscallEndBlocked")

	// A running goroutine steals proc 0.
	b1 := g.Batch(trace.ThreadID(1), 0)

GoSyscallEnd dt=177
GoSyscallBegin dt=14 p_seq=23 stack=7
GoSyscallEnd dt=62
GoSyscallBegin dt=13 p_seq=24 stack=7
GoSyscallEnd dt=90
GoSyscallBegin dt=11 p_seq=25 stack=7
GoSyscallEnd dt=69
GoSyscallBegin dt=13 p_seq=26 stack=7
GoSyscallEnd dt=65
GoSyscallBegin dt=15 p_seq=27 stack=7
GoSyscallEnd dt=72
GoSyscallBegin dt=15 p_seq=28 stack=7
GoSyscallEnd dt=73
GoSyscallBegin dt=18 p_seq=29 stack=7

GoSyscallBegin dt=18 p_seq=16 stack=67
GoSyscallEnd dt=456
GoSyscallBegin dt=41 p_seq=17 stack=68
GoSyscallEnd dt=25
GoSyscallBegin dt=16 p_seq=18 stack=69
GoSyscallEnd dt=18
HeapAlloc dt=193 heapalloc_value=26549896
GoSyscallBegin dt=69 p_seq=19 stack=70
GoSyscallEnd dt=227
GoSyscallBegin dt=12 p_seq=20 stack=70
GoSyscallEnd dt=105
GoSyscallBegin dt=87 p_seq=21 stack=71
GoSyscallEnd dt=48
GoSyscallBegin dt=37 p_seq=22 stack=72

		Name:         "GoSyscallBegin",
		Args:         []string{"dt", "p_seq", "stack"},
		IsTimedEvent: true,
		StackIDs:     []int{2},
	},
	EvGoSyscallEnd: event.Spec{
		Name:         "GoSyscallEnd",
		Args:         []string{"dt"},
		StartEv:      EvGoSyscallBegin,
		IsTimedEvent: true,
	},
	EvGoSyscallEndBlocked: event.Spec{
		Name:         "GoSyscallEndBlocked",
		Args:         []string{"dt"},

// be reordered. Some events, such as GoWaiting need to look ahead for follow-up
// events to determine the correct translation. GoSyscall, which is an
// instantaneous event, gets turned into a 1 ns long pair of
// GoSyscallStart+GoSyscallEnd, unless we observe a GoSysBlock, in which case we
// emit a GoSyscallStart+GoSyscallEndBlocked pair with the correct duration
// (i.e. starting at the original GoSyscall).
//

	pp := tl.mp.p.ptr()
	pp.trace.mSyscallID = int64(tl.mp.procid)
	tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvGoSyscallBegin, pp.trace.nextSeq(tl.gen), tl.stack(1))
}

// GoSysExit emits a GoSyscallEnd event, possibly along with a GoSyscallBlocked event
// if lostP is true.
//
// lostP must be true in all cases that a goroutine loses its P during a syscall.

GoStart dt=211 g=18 g_seq=1
GoBlock dt=3533 reason_string=12 stack=21
GoStart dt=41 g=21 g_seq=1
GoBlock dt=150 reason_string=10 stack=22
GoStart dt=93 g=20 g_seq=1
GoSyscallBegin dt=51 p_seq=2 stack=23
GoSyscallEnd dt=400
GoBlock dt=582 reason_string=15 stack=25
GoStart dt=26 g=23 g_seq=1
HeapAlloc dt=50 heapalloc_value=1646592
UserRegionBegin dt=2921 task=5 name_string=31 stack=26