pkg testing, method (*F) Fatal(...interface{})
pkg testing, method (*F) Fatalf(string, ...interface{})
pkg testing, method (*F) Fuzz(interface{})
pkg testing, method (*F) Helper()
pkg testing, method (*F) Log(...interface{})
pkg testing, method (*F) Logf(string, ...interface{})
pkg testing, method (*F) Name() string
pkg testing, method (*F) Setenv(string, string)
pkg testing, method (*F) Skip(...interface{})

pkg testing/fstest, type MapFS map[string]*MapFile
pkg testing/fstest, type MapFile struct
pkg testing/fstest, type MapFile struct, Data []uint8
pkg testing/fstest, type MapFile struct, ModTime time.Time
pkg testing/fstest, type MapFile struct, Mode fs.FileMode
pkg testing/fstest, type MapFile struct, Sys interface{}
pkg testing/iotest, func ErrReader(error) io.Reader

The [`asynctimerchan` setting](/pkg/time/#NewTimer) disables this change.
There are no runtime metrics for this change,
This setting may be removed in a future release, Go 1.27 at the earliest.

Go 1.23 changed the mode bits reported by [`os.Lstat`](/pkg/os#Lstat) and [`os.Stat`](/pkg/os#Stat)
for reparse points, which can be controlled with the `winsymlink` setting.

pkg syscall (windows-amd64), const CTRL_SHUTDOWN_EVENT = 6
pkg syscall (windows-amd64), const CTRL_SHUTDOWN_EVENT ideal-int
pkg testing, method (*B) Cleanup(func())
pkg testing, method (*T) Cleanup(func())
pkg testing, type TB interface, Cleanup(func())
pkg unicode, const Version = "12.0.0"
pkg unicode, var Elymaic *RangeTable
pkg unicode, var Nandinagari *RangeTable

pkg syscall (linux-arm), type SysProcAttr struct, PidFD *int #51246
pkg syscall (linux-arm-cgo), type SysProcAttr struct, PidFD *int #51246

pkg syscall (linux-arm), const CLONE_PIDFD ideal-int #51246
pkg syscall (linux-arm), type SysProcAttr struct, CgroupFD int #51246
pkg syscall (linux-arm), type SysProcAttr struct, UseCgroupFD bool #51246
pkg testing, method (*B) Elapsed() time.Duration #43620
pkg time, const DateOnly = "2006-01-02" #52746
pkg time, const DateOnly ideal-string #52746
pkg time, const DateTime = "2006-01-02 15:04:05" #52746

pkg syscall (windows-amd64), type RawSockaddrAny struct, Pad [96]int8
pkg testing, func MainStart(func(string, string) (bool, error), []InternalTest, []InternalBenchmark, []InternalExample) *M
pkg testing, func MainStart(testDeps, []InternalTest, []InternalBenchmark, []InternalExample) *M
pkg testing, func RegisterCover(Cover)
pkg text/scanner, const GoTokens = 1012
pkg text/template/parse, type DotNode bool

pkg syscall (windows-amd64), type SysProcAttr struct, AdditionalInheritedHandles []Handle
pkg syscall (windows-amd64), type SysProcAttr struct, ParentProcess Handle
pkg testing, method (*B) Setenv(string, string)
pkg testing, method (*T) Setenv(string, string)
pkg testing, type TB interface, Setenv(string, string)
pkg text/template/parse, const SkipFuncCheck = 2
pkg text/template/parse, const SkipFuncCheck Mode

pkg syscall (freebsd-riscv64-cgo), type SysProcAttr struct, Jail int #46259
pkg syscall (freebsd-riscv64), type SysProcAttr struct, Jail int #46259
pkg testing, func Testing() bool #52600
pkg testing/slogtest, func TestHandler(slog.Handler, func() []map[string]interface{}) error #56345
pkg unicode, const Version = "15.0.0" #55079
pkg unicode, var Cypro_Minoan *RangeTable #55079

reparse points changed. Mount points no longer have [ModeSymlink] set,
and reparse points that are not symlinks, Unix sockets, or dedup files
now always have [ModeIrregular] set.
This behavior is controlled by the `winsymlink` setting.
For Go 1.23, it defaults to `winsymlink=1`.