"funcInfo.entry",

			// GC-related ones
			"cgoInRange",
			"gclinkptr.ptr",
			"guintptr.ptr",
			"heapBitsSlice",
			"markBits.isMarked",
			"muintptr.ptr",
			"puintptr.ptr",
			"spanOf",
			"spanOfUnchecked",
			"typePointers.nextFast",
			"(*gcWork).putFast",
			"(*gcWork).tryGetFast",
			"(*guintptr).set",
			"(*markBits).advance",
			"(*mspan).allocBitsForIndex",
			"(*mspan).base",

		if p == nil {
			throw("heapdump: out of memory")
		}
		tmpbuf = (*[1 << 30]byte)(p)[:n]
	}
	// Convert heap bitmap to pointer bitmap.
	clear(tmpbuf[:nptr/8+1])
	s := spanOf(p)
	tp := s.typePointersOf(p, size)
	for {
		var addr uintptr
		if tp, addr = tp.next(p + size); addr == 0 {
			break
		}
		i := (addr - p) / goarch.PtrSize
		tmpbuf[i/8] |= 1 << (i % 8)
	}

		rzSize := computeRZlog(span.elemsize)
		span.elemsize -= rzSize
		span.largeType.Size_ = span.elemsize
		rzStart := span.base() + span.elemsize
		span.userArenaChunkFree = makeAddrRange(span.base(), rzStart)
		asanpoison(unsafe.Pointer(rzStart), span.limit-rzStart)
		asanunpoison(unsafe.Pointer(span.base()), span.elemsize)
	}

	if rate := MemProfileRate; rate > 0 {
		c := getMCache(mp)
		if c == nil {

//   can free a whole span if none of the objects are marked, but that
//   isn't its goal. This can be driven either synchronously by
//   mcentral.cacheSpan for mcentral spans, or asynchronously by
//   sweepone, which looks at all the mcentral lists.
//
// * The span reclaimer looks for spans that contain no marked objects
//   and frees whole spans. This is a separate algorithm because

			// bottom of the signal stack. Fetch from there.
			// TODO: in efence mode, stack is sysAlloc'd, so this wouldn't
			// work.
			sp := getcallersp()
			s := spanOf(sp)
			if s != nil && s.state.get() == mSpanManual && s.base() < sp && sp < s.limit {
				gp := *(**g)(unsafe.Pointer(s.base()))
				return gp
			}
			return nil
		}
	}
	return getg()
}

# A note on distributed tracing:
#
# Although Istio proxies are able to automatically send spans, they need some
# hints to tie together the entire trace. Applications need to propagate the
# appropriate HTTP headers so that when the proxies send span information, the
# spans can be correlated correctly into a single trace.
#
# To do this, an application needs to collect and propagate headers from the

		return false
	}
	systemstack(func() {
		gp := getg().m.curg
		for i := 0; i < batchSize && !(preemptible && gp.preempt); i++ {
			span := work.wbufSpans.free.first
			if span == nil {
				break
			}
			work.wbufSpans.free.remove(span)
			mheap_.freeManual(span, spanAllocWorkBuf)
		}
	})
	more := !work.wbufSpans.free.isEmpty()
	unlock(&work.wbufSpans.lock)
	return more

					i = start
					continue Spans
				}
			}

			// Span is either paragraph or heading.
			if end-start == 1 && isHeading(lines[start]) {
				kind = spanHeading
			} else if end-start == 1 && isOldHeading(lines[start], lines, start) {
				kind = spanOldHeading
			} else {
				kind = spanPara
			}
		}

		spans = append(spans, span{start, end, kind})
		i = end
	}

		//   "The text in style, script, title, and textarea elements
		//   must not have an escaping text span start that is not
		//   followed by an escaping text span end."
		// Furthermore, spoofing an escaping text span end could lead
		// to different interpretation of a </script> sequence otherwise
		// masked by the escaping text span, and spoofing a start could

	}

	copystack(gp, newsize)
}

// freeStackSpans frees unused stack spans at the end of GC.
func freeStackSpans() {
	// Scan stack pools for empty stack spans.
	for order := range stackpool {
		lock(&stackpool[order].item.mu)
		list := &stackpool[order].item.span
		for s := list.first; s != nil; {
			next := s.next
			if s.allocCount == 0 {
				list.remove(s)