gp.m.newSigstack = true

	minitSignalMask()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	// Don't clear procid, it is used by locking (semawake), and locking
	// must continue working after unminit.
}

// Called from exitm, but not from drop, to undo the effect of thread-owned

		exits(&emptystatus[0])
	}
	// Mask all SSE floating-point exceptions
	// when running on the 64-bit kernel.
	setfpmasks()
}

// Called from dropm to undo the effect of an minit.
func unminit() {
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {
}

	minitSignals()

	getg().m.procid = uint64(pthread_self())
}

// Called from dropm to undo the effect of an minit.
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {
}

// type t, stored at some offset.
//
// It returns whether or not the assignment succeeded, but
// leaves any changes it made to a.steps behind, so the caller
// must undo that work by adjusting a.steps if it fails.
//
// This method along with the assign* methods represent the
// complete register-assignment algorithm for the Go ABI.

		execute(newg, true)
	})

	// We'll resume here when the call returns.

	// Restore locked state.
	mp := gp.m
	mp.lockedExt = lockedExt
	mp.lockedg.set(gp)
	gp.lockedm.set(mp)

	// Undo the lockOSThread we did earlier.
	unlockOSThread()

	gp.asyncSafePoint = false
}

type debugCallWrapArgs struct {
	dispatch uintptr
	callingG *g
}

				return 0, err
			}
			// There are no more bytes of data in this segment, but we may still
			// be able to read the next symbol out of the previously read bits.
			// First, undo the readByte that the ensureNBits call made.
			if d.bytes.nUnreadable != 0 {
				d.unreadByteStuffedByte()
			}
			goto slowPath
		}
	}
	if v := h.lut[(d.bits.a>>uint32(d.bits.n-lutSize))&0xff]; v != 0 {

			}
		}(i)
		go func(i int) {
			defer wg.Done()
			timer.Stop()
		}(i)
	}
	wg.Wait()
}

func TestTimeIsDST(t *testing.T) {
	undo := DisablePlatformSources()
	defer undo()

	tzWithDST, err := LoadLocation("Australia/Sydney")
	if err != nil {
		t.Fatalf("could not load tz 'Australia/Sydney': %v", err)
	}

func minit() {
	miniterrno()
	minitSignals()
	getg().m.procid = uint64(pthread_self())
}

func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {
}

// tstart is a function descriptor to _tstart defined in assembly.

	// useful in debuggers.
	getg().m.procid = uint64(gettid())
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {

	for i := len(dirs) - 1; i >= 0; i-- {
		err := os.Chmod(dirs[i].path, dirs[i].mode&^0222)
		if err != nil {
			dirs = dirs[i:] // Only undo what we did so far.
			undo()
			fatalf("failed to make GOROOT read-only: %v", err)
		}
	}

	return undo
}

// raceDetectorSupported is a copy of the function
// internal/platform.RaceDetectorSupported, which can't be used here