// is when assists are enabled and the necessary statistics are
// available).
func (c *gcControllerState) revise() {
	gcPercent := c.gcPercent.Load()
	if gcPercent < 0 {
		// If GC is disabled but we're running a forced GC,
		// act like GOGC is huge for the below calculations.
		gcPercent = 100000
	}
	live := c.heapLive.Load()
	scan := c.heapScan.Load()

//		pointer stored in the data word sym(SB), not a function named sym(SB).
//		Encoding: same as above, but type = TYPE_INDIR.
//
//	$*$<mem>
//		No longer used.
//		On machines with actual SB registers, $*$<mem> forced the
//		instruction encoding to use a full 32-bit constant, never a
//		reference relative to SB.
//
//	$<floating point literal>
//		Floating point constant value.
//		Encoding:
//			type = TYPE_FCONST

	// Sweeping must be complete before marking commences, so
	// sweep any unswept spans. If this is a concurrent GC, there
	// shouldn't be any spans left to sweep, so this should finish
	// instantly. If GC was forced before the concurrent sweep
	// finished, there may be spans to sweep.
	for sweepone() != ^uintptr(0) {
	}

	// Make sure there aren't any outstanding sweepers left.

			ran = true
		}

		// Note: Delaying the forced adjustment until after the ts.run
		// (as opposed to calling ts.adjust(now, force) above)
		// is significantly faster under contention, such as in
		// package time's BenchmarkTimerAdjust10000,
		// though we do not fully understand why.
		force = ts == &getg().m.p.ptr().timers && int(ts.zombies.Load()) > int(ts.len.Load())/4
		if force {
			ts.adjust(now, true)
		}
	}

	// The values below can be stored to g.stackguard0 to force
	// the next stack check to fail.
	// These are all larger than any real SP.

	// Goroutine preemption request.
	// 0xfffffade in hex.
	stackPreempt = uintptrMask & -1314

	// Thread is forking. Causes a split stack check failure.
	// 0xfffffb2e in hex.
	stackFork = uintptrMask & -1234

	// Force a stack movement. Used for debugging.
	// 0xfffffeed in hex.

						// the next cycle.
						assertInRange(t, "goal ratio", c[n-1].goalRatio(), 0.90, 15)
					} else {
						// Give a wider goal range here. With such a high GOGC value we're going to be
						// forced to undershoot.
						//
						// TODO(mknyszek): Instead of placing a 0.95 limit on the trigger, make the limit
						// based on absolute bytes, that's based somewhat in how the minimum heap size
						// is determined.

	defer timelog("end", "dist bootstrap")

	var debug, distpack, force, noBanner, noClean bool
	flag.BoolVar(&rebuildall, "a", rebuildall, "rebuild all")
	flag.BoolVar(&debug, "d", debug, "enable debugging of bootstrap process")
	flag.BoolVar(&distpack, "distpack", distpack, "write distribution files to pkg/distpack")
	flag.BoolVar(&force, "force", force, "build even if the port is marked as broken")

	// with no opportunity to transition.
	//
	// The exception to this rule are goroutines that are concurrently exiting a syscall.
	// Those will all be forced into the syscalling slow path, and we'll just make sure
	// that we don't observe any goroutines in that critical section before starting
	// the world again.
	//

==== Forced dependencies

Forcing dependency versions using `force = true` on a first-level dependency has been deprecated.

Force has both a semantic and ordering issue which can be avoided by using a <<rich_versions.adoc#rich-version-constraints, strict version constraint>>.

	case size == 0:
		buffer = make([]byte, 1) // Allocate at least a byte to reach EOF
	case size == -1:
		if size := data.ActualSize(); size > 0 && size < fi.Erasure.BlockSize {
			// Account for padding and forced compression overhead and encryption.
			buffer = make([]byte, data.ActualSize()+256+32+32, data.ActualSize()*2+512)
		} else {
			buffer = globalBytePoolCap.Load().Get()
			defer globalBytePoolCap.Load().Put(buffer)
		}