)

// Reader reads a byte stream, validates it, and produces trace events.
type Reader struct {
	r           *bufio.Reader
	lastTs      Time
	gen         *generation
	spill       *spilledBatch
	spillErr    error // error from reading spill
	frontier    []*batchCursor
	cpuSamples  []cpuSample
	order       ordering
	emittedSync bool

	go121Events *oldTraceConverter
}

// NewReader creates a new trace reader.

// Notes:
// - 386 fails due to spilling a register
// amd64:"TEXT\t.*, [$]0-"
// arm:"TEXT\t.*, [$]0-" (spills return address)
// arm64:"TEXT\t.*, [$]0-"
// ppc64x:"TEXT\t.*, [$]0-"
// s390x:"TEXT\t.*, [$]0-"
// Note: that 386 currently has to spill a register.
func KeepWanted(t *T) {
	*t = T{A: t.A, B: t.B, C: t.C, D: t.D}
}

//
// When the buffer fills up, the write barrier invokes the slow path
// (wbBufFlush) to flush the buffer to the GC work queues. In this
// path, since the compiler didn't spill registers, we spill *all*
// registers and disallow any GC safe points that could observe the
// stack frame (since we don't know the types of the spilled
// registers).

package runtime

import (
	"internal/goarch"

	//    │ └---- Next 2 bits -> sub-bucket 0
	//    └------- Bit 10 set -> bucket 2
	//
	// Following this pattern, bucket 38 will have the bit 46 set. We don't
	// have any buckets for higher values, so we spill the rest into an overflow
	// bucket containing values of 2^47-1 nanoseconds or approx. 1 day or more.
	// This range is more than enough to handle durations produced by the runtime.
	timeHistMinBucketBits = 9

	}
	if g := p.Get(); g != "b" {
		t.Fatalf("got %#v; want b", g)
	}
	if g := p.Get(); g != nil {
		t.Fatalf("got %#v; want nil", g)
	}
	Runtime_procUnpin()

	// Put in a large number of objects so they spill into
	// stealable space.
	for i := 0; i < 100; i++ {
		p.Put("c")
	}
	// After one GC, the victim cache should keep them alive.
	runtime.GC()
	if g := p.Get(); g != "c" {
		t.Fatalf("got %#v; want c after GC", g)

	// if called from a non-go thread.
	XORPS	X15, X15
	XORQ	R14, R14

	get_tls(AX)
	CMPQ	AX, $0
	JE	2(PC)
	// Exception from Go thread, set R14.
	MOVQ	g(AX), R14

	// Reserve space for spill slots.
	ADJSP	$16
	MOVQ	CX, AX
	MOVQ	DX, BX
	// Calling ABIInternal because TLS might be nil.
	CALL	runtime·sigtrampgo<ABIInternal>(SB)
	// Return value is already stored in AX.

	ADJSP	$-16

```Python hl_lines="1  7-12  19-20"
{!../../../docs_src/dataclasses/tutorial001.py!}
```

This is still supported thanks to **Pydantic**, as it has <a href="https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel" class="external-link" target="_blank">internal support for `dataclasses`</a>.

        succeeds "clean"
        then: "clean is still marked UP-TO-DATE"
        result.groupedOutput.task(":clean").outcome == "UP-TO-DATE"

        when: "the kotlin script compiler is invoked due to a script change"
        buildKotlinFile << "\n"
        succeeds "clean"
        then: "clean is still marked as UP-TO-DATE"
        result.groupedOutput.task(":clean").outcome == "UP-TO-DATE"
    }

	a int
}

func TestPointer(t *testing.T) {
	bt := new(T)
	wt := weak.Make(bt)
	if st := wt.Strong(); st != bt {
		t.Fatalf("weak pointer is not the same as strong pointer: %p vs. %p", st, bt)
	}
	// bt is still referenced.
	runtime.GC()

	if st := wt.Strong(); st != bt {
		t.Fatalf("weak pointer is not the same as strong pointer after GC: %p vs. %p", st, bt)
	}
	// bt is no longer referenced.
	runtime.GC()

 *    * for package symbol if the package is still exists
 *
 * @see org.jetbrains.kotlin.analysis.api.lifetime.KaReadActionConfinementLifetimeToken
 */
public abstract class KaSymbolPointer<out S : KaSymbol> {
    /**
     * @return restored symbol (possibly the new symbol instance) if one is still valid, `null` otherwise
     *