if trace.ok() {
			trace.GoroutineStackAlloc(uintptr(v), uintptr(n))
			traceRelease(trace)
		}
	}
	if raceenabled {
		racemalloc(v, uintptr(n))
	}
	if msanenabled {
		msanmalloc(v, uintptr(n))
	}
	if asanenabled {
		asanunpoison(v, uintptr(n))
	}
	if stackDebug >= 1 {
		print("  allocated ", v, "\n")
	}
	return stack{uintptr(v), uintptr(v) + uintptr(n)}
}

	}

	if raceenabled {
		// TODO(mknyszek): Track individual objects.
		racemalloc(unsafe.Pointer(span.base()), span.elemsize)
	}

	if msanenabled {
		// TODO(mknyszek): Track individual objects.
		msanmalloc(unsafe.Pointer(span.base()), span.elemsize)
	}

	if asanenabled {
		// TODO(mknyszek): Track individual objects.
		rzSize := computeRZlog(span.elemsize)
		span.elemsize -= rzSize