go/src/runtime/trace_cgo_test.go

// TestTraceUnwindCGO verifies that trace events emitted in cgo callbacks
// produce the same stack traces and don't cause any crashes regardless of
// tracefpunwindoff being set to 0 or 1.
func TestTraceUnwindCGO(t *testing.T) { … }

func mustFindLogV2(t *testing.T, trc io.Reader, category string) trace.Event { … }

// dumpStack returns e.Stack() as a string.
func dumpStackV2(e *trace.Event) string { … }