//
		// Only do this if we're using the regular heap arena hints.
		// This behavior is only for the heap.
		v = h.arena.alloc(n, heapArenaBytes, &gcController.heapReleased)
		if v != nil {
			size = n
			goto mapped
		}
	}

	// Try to grow the heap at a hint address.
	for *hintList != nil {
		hint := *hintList
		p := hint.addr
		if hint.down {
			p -= n
		}
		if p+n < p {

				case ctxt&inTypeSwitch != 0:
					msg = "cannot fallthrough in type switch"
				default:
					msg = "fallthrough statement out of place"
				}
				check.error(s, MisplacedFallthrough, msg)
			}
		case syntax.Goto:
			// goto's must have labels, should have been caught above
			fallthrough
		default:
			check.errorf(s, InvalidSyntaxTree, "branch statement: %s", s.Tok)
		}

	case *syntax.BlockStmt:

					print("adjust ptr ", hex(p), " ", funcname(f), "\n")
				}
				if useCAS {
					ppu := (*unsafe.Pointer)(unsafe.Pointer(pp))
					if !atomic.Casp1(ppu, unsafe.Pointer(p), unsafe.Pointer(p+delta)) {
						goto retry
					}
				} else {
					*pp = p + delta
				}
			}
		}
	}
}

// Note: the argument/return area is adjusted by the callee.
func adjustframe(frame *stkframe, adjinfo *adjustinfo) {

// form of case-insensitivity.
func EqualFold(s, t string) bool {
	// ASCII fast path
	i := 0
	for ; i < len(s) && i < len(t); i++ {
		sr := s[i]
		tr := t[i]
		if sr|tr >= utf8.RuneSelf {
			goto hasUnicode
		}

		// Easy case.
		if tr == sr {
			continue
		}

		// Make sr < tr to simplify what follows.
		if tr < sr {
			tr, sr = sr, tr
		}

		if sweepone() == ^uintptr(0) {
			mheap_.sweepPagesPerByte = 0
			break
		}
		if mheap_.pagesSweptBasis.Load() != sweptBasis {
			// Sweep pacing changed. Recompute debt.
			goto retry
		}
	}

	trace = traceAcquire()
	if trace.ok() {
		trace.GCSweepDone()
		traceRelease(trace)
	}
}

// clobberfree sets the memory content at x to bad content, for debugging

								combineSharedBlocks[block] = combineShared
								fmt.Println("Retrying with merged data")
								if addedFiles >= len(files[partIdx]) {
									attempt++
									goto nextAttempt
								}
							}
						}
					}
				}
				if m.blockOffset != len(combined) {
					return fmt.Errorf("Block offset mismatch. Expected %d got %d", m.blockOffset, len(combined))
				}

				printlock()
				println("runtime: got trace reader", g2, g2.goid)
				throw("unexpected trace reader")
			}

			return true
		}, nil, waitReasonTraceReaderBlocked, traceBlockSystemGoroutine, 2)
		goto top
	}

	return buf
}

// readTrace0 is ReadTrace's continuation on g0. This must run on the
// system stack because it acquires trace.lock.
//
//go:systemstack

			v = d - 'A' + 10
		default:
			n = 0
			err = strconv.ErrSyntax
			goto Error
		}
		if int(v) >= base {
			n = 0
			err = strconv.ErrSyntax
			goto Error
		}

		if n >= cutoff {
			// n*base overflows
			n = 1<<64 - 1
			err = strconv.ErrRange
			goto Error
		}
		n *= uint64(base)

		n1 := n + uint64(v)
		if n1 < n || n1 > maxVal {
			// n+v overflows

			return *(*func())(add(p.slotsPtr, i*goarch.PtrSize)), true
		}

	Recheck:
		if d := gp._defer; d != nil && d.sp == uintptr(p.sp) {
			if d.rangefunc {
				deferconvert(d)
				popDefer(gp)
				goto Recheck
			}

			fn := d.fn

			// TODO(mdempsky): Instead of having each deferproc call have
			// its own "deferreturn(); return" sequence, we should just make

	// unnecessarily. See issue #35470.
	p = ctxt.StartUnsafePoint(p, newprog)

	var to_done, to_more *obj.Prog

	if framesize <= abi.StackSmall {
		// small stack
		//	// if SP > stackguard { goto done }
		//	BLTU	stackguard, SP, done
		p = obj.Appendp(p, newprog)
		p.As = ABLTU
		p.From.Type = obj.TYPE_REG
		p.From.Reg = REG_X6
		p.Reg = REG_SP
		p.To.Type = obj.TYPE_BRANCH
		to_done = p