const runtime.spanAllocHeap

9 uses

	runtime (current package)
		arena.go#L1052: 	h.initSpan(s, spanAllocHeap, spc, base, userArenaChunkPages)
		mheap.go#L990: 	spanAllocHeap    spanAllocType = iota // heap span
		mheap.go#L997: 	return s != spanAllocHeap
		mheap.go#L1017: 		s = h.allocSpan(npages, spanAllocHeap, spanclass)
		mheap.go#L1409: 	if typ == spanAllocHeap {
		mheap.go#L1417: 	case spanAllocHeap:
		mheap.go#L1660: 		h.freeSpanLocked(s, spanAllocHeap)
		mheap.go#L1731: 	if typ == spanAllocHeap {
		mheap.go#L1737: 	case spanAllocHeap:

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)