// is very heavy-weight and not easy to stop, so we could end up
	// confusing the benchmarking framework for small b.N.
	b.StopTimer()
	stop()

	// Disable the default */op metrics.
	// ns/op doesn't mean anything because it's an average, but we
	// have a sleep in our b.N loop above which skews this significantly.
	b.ReportMetric(0, "ns/op")
	b.ReportMetric(0, "B/op")

GOTRACEBACK=crash is like “system” but crashes in an operating system-specific
manner instead of exiting. For example, on Unix systems, the crash raises
SIGABRT to trigger a core dump.
GOTRACEBACK=wer is like “crash” but doesn't disable Windows Error Reporting (WER).
For historical reasons, the GOTRACEBACK settings 0, 1, and 2 are synonyms for
none, all, and system, respectively.
The [runtime/debug.SetTraceback] function allows increasing the

//
// To include every blocking event in the profile, pass rate = 1.
// To turn off profiling entirely, pass rate <= 0.
func SetBlockProfileRate(rate int) {
	var r int64
	if rate <= 0 {
		r = 0 // disable profiling
	} else if rate == 1 {
		r = 1 // profile everything
	} else {
		// convert ns to cycles, use float64 to prevent overflow during multiplication

// (incl. returned) to variables of function type and type
// inference will attempt to infer the missing type arguments.
// Available with go1.21.
const enableReverseTypeInference = true // disable for debugging

// infer attempts to infer the complete set of type arguments for generic function instantiation/call
// based on the given type parameters tparams, type arguments targs, function parameters params, and

						return false
					}
				} else if xi != nil || yi != nil {
					// One but not both of them are interfaces.
					// In this case, either x or y could be viable matches for the corresponding
					// type parameter, which means choosing either introduces an order dependence.
					// Therefore, we must fail unification (go.dev/issue/60933).
					return false
				}

	mp := acquirem()

	// Advance the generation or stop the trace.
	trace.lastNonZeroGen = gen
	if stopTrace {
		systemstack(func() {
			// Ordering is important here. Set shutdown first, then disable tracing,
			// so that conditions like (traceEnabled() || traceShuttingDown()) have
			// no opportunity to be false. Hold the trace lock so this update appears
			// atomic to the trace reader.
			lock(&trace.lock)

			if h2i, ok := v.Interface().(h2Transport); ok {
				t.h2transport = h2i
				return
			}
		}
	}

	if t.TLSNextProto != nil {
		// This is the documented way to disable http2 on a
		// Transport.
		return
	}
	if !t.ForceAttemptHTTP2 && (t.TLSClientConfig != nil || t.Dial != nil || t.DialContext != nil || t.hasCustomTLSDialer()) {
		// Be conservative and don't automatically enable

	}

	return true, fusedSize
}

type padJumpsCtx int32

func makePjcCtx(ctxt *obj.Link) padJumpsCtx {
	// Disable jump padding on 32 bit builds by setting
	// padJumps to 0.
	if ctxt.Arch.Family == sys.I386 {
		return padJumpsCtx(0)
	}

	// Disable jump padding for hand written assembly code.
	if ctxt.IsAsm {
		return padJumpsCtx(0)
	}

	return padJumpsCtx(32)
}

C compiler (typically gcc or clang) cannot be found on the system PATH.
You can override the default by setting the CGO_ENABLED
environment variable when running the go tool: set it to 1 to enable
the use of cgo, and to 0 to disable it. The go tool will set the
build constraint "cgo" if cgo is enabled. The special import "C"
implies the "cgo" build constraint, as though the file also said
"//go:build cgo".  Therefore, if cgo is disabled, files that import

			return
		}
	}
	hint.next = nil
}

// MapNextArenaHint reserves a page at the next arena growth hint,
// preventing the arena from growing there, and returns the range of
// addresses that are no longer viable.
//
// This may fail to reserve memory. If it fails, it still returns the
// address range it attempted to reserve.
func MapNextArenaHint() (start, end uintptr, ok bool) {
	hint := mheap_.arenaHints