b = a
	return
}

// Make sure we don't put pointers in SSE registers across safe
// points.

func safe_point(p, q *[2]*int) {
	a, b := p[0], p[1] // amd64:-`MOVUPS`
	runtime.GC()
	q[0], q[1] = a, b // amd64:-`MOVUPS`
}

// ------------- //
//    Storing    //
// ------------- //

	}

	if err := tx.SavePoint("save_point1").Error; err != nil {
		t.Fatalf("Failed to save point, got error %v", err)
	}

	user1 := *GetUser("transaction-save-point-1", Config{})
	tx.Create(&user1)

	if err := tx.First(&User{}, "name = ?", user1.Name).Error; err != nil {
		t.Fatalf("Should find saved record")
	}

	if err := tx.RollbackTo("save_point1").Error; err != nil {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test to make sure we don't think values are dead
// when they are assigned to a PPARAMOUT slot before
// the last GC safepoint.

package main

import (
	"fmt"
	"runtime"
)

// When a T is deallocated, T[1] is certain to
// get clobbered (the runtime writes 0xdeaddeaddeaddead there).
type T [4]int

func f() (r, s *T) {

			db.AddError(committer.Rollback())
		}
	} else {
		db.AddError(ErrInvalidTransaction)
	}
	return db
}

func (db *DB) SavePoint(name string) *DB {
	if savePointer, ok := db.Dialector.(SavePointerDialectorInterface); ok {
		// close prepared statement, because SavePoint not support prepared statement.
		// e.g. mysql8.0 doc: https://dev.mysql.com/doc/refman/8.0/en/sql-prepared-statements.html
		var (

	QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row
}

// SavePointerDialectorInterface save pointer interface
type SavePointerDialectorInterface interface {
	SavePoint(tx *DB, name string) error
	RollbackTo(tx *DB, name string) error
}

// TxBeginner tx beginner
type TxBeginner interface {
	BeginTx(ctx context.Context, opts *sql.TxOptions) (*sql.Tx, error)
}

	lv.livevars = lv.livevars[:0]
}

func (lv *liveness) enableClobber() {
	// The clobberdead experiment inserts code to clobber pointer slots in all
	// the dead variables (locals and args) at every synchronous safepoint.
	if !base.Flag.ClobberDead {
		return
	}
	if lv.fn.Pragma&ir.CgoUnsafeArgs != 0 {
		// C or assembly code uses the exact frame layout. Don't clobber.
		return
	}

		// We have a special op for this so as to not confuse GCCallOff
		// (particularly stack maps). It takes a memory arg so it
		// gets correctly ordered with respect to GC safepoints.
		// arg0=ptr/int arg1=mem, output=int/ptr
		//
		// TODO(neelance): LoweredConvert should not be necessary any more, since OpConvert does not need to be lowered any more (CL 108496).

		// It is guaranteed to always be in range, keeps the backing store alive,
		// and is updated on stack copies. If a GC occurs when this function is
		// suspended at any safepoint, this variable ensures correct operation.
		//
		// hu contains the equivalent uintptr version. It may point past the
		// end, but doesn't keep the backing store alive and doesn't get updated

	Asym    *LSym
	Aoffset int32
	Name    AddrName
	Gotype  *LSym
}

// RegSpill provides spill/fill information for a register-resident argument
// to a function.  These need spilling/filling in the safepoint/stackgrowth case.
// At the time of fill/spill, the offset must be adjusted by the architecture-dependent
// adjustment to hardware SP that occurs in a call instruction.  E.g., for AMD64,

	// Convert converts between pointers and integers.
	// We have a special op for this so as to not confuse GC
	// (particularly stack maps).  It takes a memory arg so it
	// gets correctly ordered with respect to GC safepoints.
	// It gets compiled to nothing, so its result must in the same
	// register as its argument. regalloc knows it can use any
	// allocatable integer register for OpConvert.
	// arg0=ptr/int arg1=mem, output=int/ptr