func asanread(addr unsafe.Pointer, sz uintptr)            { throw("asan") }
func asanwrite(addr unsafe.Pointer, sz uintptr)           { throw("asan") }
func asanunpoison(addr unsafe.Pointer, sz uintptr)        { throw("asan") }
func asanpoison(addr unsafe.Pointer, sz uintptr)          { throw("asan") }

}

//go:noescape
func doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)

//go:noescape
func doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)

//go:noescape
func asanunpoison(addr unsafe.Pointer, sz uintptr)

//go:noescape
func asanpoison(addr unsafe.Pointer, sz uintptr)

//go:noescape
func asanregisterglobals(addr unsafe.Pointer, n uintptr)

// These are called from asan_GOARCH.s
//

		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 {

			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)}
}

// stackfree frees an n byte stack allocation at stk.
//

		// The allocated memory is larger than required userSize, it will also include
		// redzone and some other padding bytes.
		rzBeg := unsafe.Add(x, userSize)
		asanpoison(rzBeg, size-userSize)
		asanunpoison(x, userSize)
	}

	// TODO(mknyszek): We should really count the header as part
	// of gc_sys or something. The code below just pretends it is

			racemalloc(unsafe.Pointer(gp.stack.lo), gp.stack.hi-gp.stack.lo)
		}
		if msanenabled {
			msanmalloc(unsafe.Pointer(gp.stack.lo), gp.stack.hi-gp.stack.lo)
		}
		if asanenabled {
			asanunpoison(unsafe.Pointer(gp.stack.lo), gp.stack.hi-gp.stack.lo)
		}
	}
	return gp
}

// Purge all cached G's from gfree list to the global list.
func gfpurge(pp *p) {
	var (
		inc      int32

					racefree(unsafe.Pointer(x), size)
				}
				if msanenabled && !s.isUserArenaChunk {
					msanfree(unsafe.Pointer(x), size)
				}
				if asanenabled && !s.isUserArenaChunk {
					asanpoison(unsafe.Pointer(x), size)
				}
			}
			mbits.advance()
			abits.advance()
		}
	}

	// Check for zombie objects.
	if s.freeindex < s.nelems {
		// Everything < freeindex is allocated and hence

			msanfree(base, bytes)
		}
		if asanenabled {
			// Tell asan that this entire span is no longer in use.
			base := unsafe.Pointer(s.base())
			bytes := s.npages << _PageShift
			asanpoison(base, bytes)
		}
		h.freeSpanLocked(s, spanAllocHeap)
		unlock(&h.lock)
	})
}

// freeManual frees a manually-managed span returned by allocManual.