queryAAAA: true,
		},
		{
			name: "udp: large request",
			host: "giant.",
			// Upstream UDP server returns big response, we cannot serve it. Compliant server would truncate it.
			expectResolutionFailure: dns.RcodeServerFailure,
		},
		{
			name:     "tcp: large request",
			host:     "giant.",
			expected: giantResponse,
		},
		{
			name:                    "large request edns",

		// except colon, in a header key. Issue #58862.
		in: `From: iant@golang.org
Custom/Header: v

Body
`,
		header: Header{
			"From":          []string{"iant@golang.org"},
			"Custom/Header": []string{"v"},
		},
		body: "Body\n",
	},
	{
		// RFC 4155 mbox format. We've historically permitted this,
		// so we continue to permit it. Issue #60332.
		in: `From iant@golang.org Mon Jun 19 00:00:00 2023
From: ******@****.***

			// distinction between the inlinable case and the
			// non-inlinable case, but this is hard to do. Example:
			//
			//    type I interface { Tiny() int; Giant() }
			//    type Conc struct { x int }
			//    func (c *Conc) Tiny() int { return 42 }
			//    func (c *Conc) Giant() { <huge amounts of code> }
			//
			//    func passConcToItf(c *Conc) {
			//        makesItfMethodCall(c)
			//    }
			//

	if gcphase == _GCmarktermination {
		throw("newUserArenaChunk called with gcphase == _GCmarktermination")
	}

	// Deduct assist credit. Because user arena chunks are modeled as one
	// giant heap object which counts toward heapLive, we're obligated to
	// assist the GC proportionally (and it's worth noting that the arena
	// does represent additional work for the GC, but we also have no idea

		return
	}
	if len(lv.vars) > 10000 || len(lv.f.Blocks) > 10000 {
		// Be careful to avoid doing too much work.
		// Bail if >10000 variables or >10000 blocks.
		// Otherwise, giant functions make this experiment generate too much code.
		return
	}
	if lv.f.Name == "forkAndExecInChild" {
		// forkAndExecInChild calls vfork on some platforms.

		// whereas the specific and destructor is per thread.
		if (x_cgo_pthread_key_created == 0 && pthread_key_create(&pthread_g, pthread_key_destructor) == 0) {
			x_cgo_pthread_key_created = 1;
		}


		// TODO(iant): For the case of a new C thread calling into Go, such
		// as when using -buildmode=c-archive, we know that Go runtime
		// initialization is complete but we do not know that all Go init

	ev[0].flags = _EV_ADD | _EV_CLEAR
	ev[0].fflags = 0
	ev[0].data = 0

	if goarch.PtrSize == 4 {
		// We only have a pointer-sized field to store into,
		// so on a 32-bit system we get no sequence protection.
		// TODO(iant): If we notice any problems we could at least
		// steal the low-order 2 bits for a tiny sequence number.
		ev[0].udata = (*byte)(unsafe.Pointer(pd))
	} else {
		tp := taggedPointerPack(unsafe.Pointer(pd), pd.fdseq.Load())

- [`KT-65704`](https://youtrack.jetbrains.com/issue/KT-65704) K2: `computeCommonSuperType` of flexible type with recursive captured type argument produces giant multi-level-deep type
- [`KT-65410`](https://youtrack.jetbrains.com/issue/KT-65410) K2: ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED  for 'removeAt' in KJK hierarchy

				cancel()
				<-c.Done()
			},
			limit:      8,
			gccgoLimit: 25,
		},
	} {
		limit := test.limit
		if runtime.Compiler == "gccgo" {
			// gccgo does not yet do escape analysis.
			// TODO(iant): Remove this when gccgo does do escape analysis.
			limit = test.gccgoLimit
		}
		numRuns := 100
		if testing.Short() {
			numRuns = 10
		}
		if n := testing.AllocsPerRun(numRuns, test.f); n > limit {

// for context.DeadlineExceeded. See mapErr.
// It is also used when Dialer.Deadline is exceeded.
// error.Is(errTimeout, context.DeadlineExceeded) returns true.
//
// TODO(iant): We could consider changing this to os.ErrDeadlineExceeded
// in the future, if we make
//
//	errors.Is(os.ErrDeadlineExceeded, context.DeadlineExceeded)
//
// return true.
var errTimeout error = &timeoutError{}