// they might have been locked at the time of the fork. This means
// no rescheduling, no malloc calls, and no new stack segments.
// For the same reason compiler does not race instrument it.
// The calls to rawSyscall are okay because they are assembly
// functions that do not grow the stack.
//
//go:norace

		// so we don't need to use mp.locks
		// on the fast path, which is that the
		// first attempt succeeds.
		x, ok := c.Next()
		if ok {
			return x
		}
		mp.locks++ // hold m even though c.Refill may do stack split checks
		c.Refill()
		mp.locks--
	}
}

// mrandinit initializes the random state of an m.
func mrandinit(mp *m) {
	var seed [4]uint64
	for i := range seed {
		seed[i] = bootstrapRand()

// needing different casings of a file path, but it would be fairly illegible
// to most programmers when those paths appeared in the file system
// (including in file paths in compiler errors and stack traces)
// in web server logs, and so on. Instead, we want a safe escaped form that
// leaves most paths unaltered.
//
// The safe escaped form is to replace every uppercase letter

		// ep's data pointer sometime before this point and it's possible
		// for that memory to get freed.
		KeepAlive(ep)
		return
	}

	// stack
	if gp := getg(); gp.m.curg.stack.lo <= uintptr(p) && uintptr(p) < gp.m.curg.stack.hi {
		found := false
		var u unwinder
		for u.initAt(gp.m.curg.sched.pc, gp.m.curg.sched.sp, 0, gp.m.curg, 0); u.valid(); u.next() {

		// n is a readonly global; use it directly.
		value = n
	case conv.Esc() == ir.EscNone && fromType.Size() <= 1024:
		// n does not escape. Use a stack temporary initialized to n.
		value = typecheck.TempAt(base.Pos, ir.CurFunc, fromType)
		init.Append(typecheck.Stmt(ir.NewAssignStmt(base.Pos, value, n)))
	}
	if value != nil {
		// The interface data word is &value.

					}) {
						// stk is a call stack that is still on the user stack when
						// it calls runtime.unlock. Add the extra function that
						// we'll see, when the static lock ranking implementation of
						// runtime.unlockWithRank switches to the system stack.
						stk = append([]string{"runtime.unlockWithRank"}, stk...)
					}
				}

	return unsafe.String((*byte)(p), n)
}

// stringDataOnStack reports whether the string's data is
// stored on the current goroutine's stack.
func stringDataOnStack(s string) bool {
	ptr := uintptr(unsafe.Pointer(unsafe.StringData(s)))
	stk := getg().stack
	return stk.lo <= ptr && ptr < stk.hi
}

func rawstringtmp(buf *tmpBuf, l int) (s string, b []byte) {
	if buf != nil && l <= len(buf) {
		b = buf[:l]

	cv := mkCounterVarName(len(f.pkg.counterLengths))
	f.fn.counterVar = cv
}

func (f *File) postFunc(fn ast.Node, funcname string, flit bool, body *ast.BlockStmt) {

	// Tack on single counter write if we are in "perfunc" mode.
	singleCtr := ""
	if pkgconfig.Granularity == "perfunc" {
		singleCtr = "; " + f.newCounter(fn.Pos(), fn.Pos(), 1)
	}

	// max(maxID, numLMS/2). This level of the recursion needs maxID,
	// and all deeper levels of the recursion will need no more than numLMS/2,
	// so this one allocation is guaranteed to suffice for the entire stack
	// of recursive calls.
	tmp := oldTmp
	if len(tmp) < len(saTmp) {
		tmp = saTmp
	}
	if len(tmp) < numLMS {
		// TestSAIS/forcealloc reaches this code.
		n := maxID
		if n < numLMS/2 {

	for _, n := range []int64{0, 7, -7, 1 << 30, -1 << 30, 1 << 50, -1 << 50} {
		x := NewInt(3)
		got := testing.AllocsPerRun(100, func() {
			// NewInt should inline, and all its allocations
			// can happen on the stack. Passing the result of NewInt
			// to Add should not cause any of those allocations to escape.
			x.Add(x, NewInt(n))
		})
		if got != 0 {
			t.Errorf("x.Add(x, NewInt(%d)), wanted 0 allocations, got %f", n, got)