// We need the G continue running,
		// so the M has a chance to run this G.
		for {
			select {
			case <-stop:
				return
			case <-time.After(time.Millisecond * 100):
			}
		}
	}()
	defer close(stop)

	for i := 0; i < 1000; i++ {
		if !C.Ctid() {
			t.Fatalf("cgo has not locked OS thread")
		}
	}

## Compiler {#compiler}

The build time overhead to building with [Profile Guided Optimization](/doc/pgo) has been reduced significantly.
Previously, large builds could see 100%+ build time increase from enabling PGO.
In Go 1.23, overhead should be in the single digit percentages.

## Assembler {#assembler}

pkg context, func WithDeadline(Context, time.Time) (Context, CancelFunc)
pkg context, func WithTimeout(Context, time.Duration) (Context, CancelFunc)
pkg context, func WithValue(Context, interface{}, interface{}) Context
pkg context, type CancelFunc func()
pkg context, type Context interface { Deadline, Done, Err, Value }
pkg context, type Context interface, Deadline() (time.Time, bool)
pkg context, type Context interface, Done() <-chan struct

pkg sync/atomic, type Uint32 struct #50860
pkg sync/atomic, type Uint64 struct #50860
pkg sync/atomic, type Uintptr struct #50860
pkg time, method (Duration) Abs() Duration #51414
pkg time, method (Time) ZoneBounds() (Time, Time) #50062
pkg crypto/x509, func ParseCRL //deprecated #50674
pkg crypto/x509, func ParseDERCRL //deprecated #50674

pkg database/sql, type DBStats struct, MaxLifetimeClosed int64
pkg database/sql, type DBStats struct, MaxOpenConnections int
pkg database/sql, type DBStats struct, WaitCount int64
pkg database/sql, type DBStats struct, WaitDuration time.Duration
pkg debug/elf, const ELFOSABI_AROS = 15
pkg debug/elf, const ELFOSABI_AROS OSABI
pkg debug/elf, const ELFOSABI_CLOUDABI = 17
pkg debug/elf, const ELFOSABI_CLOUDABI OSABI
pkg debug/elf, const ELFOSABI_FENIXOS = 16

pkg text/template, method (Template) Copy() *parse.Tree
pkg text/template/parse, method (*Tree) Copy() *Tree
pkg time, method (*Time) UnmarshalBinary([]uint8) error
pkg time, method (*Time) UnmarshalText([]uint8) error
pkg time, method (Time) MarshalBinary() ([]uint8, error)
pkg time, method (Time) MarshalText() ([]uint8, error)