/*
     * The initialization of seenExceptions has to be more complicated than we'd like. The simple
     * approach would be for each caller CAS it from null to a Set populated with its exception. But
     * there's another race: If the first thread fails with an exception and a second thread
     * immediately fails with the same exception:
     *
     * Thread1: calls setException(), which returns true, context switch before it can CAS

  //
  // TODO(b/78232898): This isn't thread-safe; there is a race between the call
  // to set_tensorflow_accelerator_device_info() with ops that call the getter
  // tensorflow_accelerator_device_info(). This isn't trivially fixed by adding
  // locking to those methods; see the bug for details. Our only saving grace at
  // the moment is that this race doesn't seem to occur in practice.
  if (use_accelerator_device_info_) {

	flagInstallSuffix = flag.String("installsuffix", "", "set package directory `suffix`")
	flagDumpDep       = flag.Bool("dumpdep", false, "dump symbol dependency graph")
	flagRace          = flag.Bool("race", false, "enable race detector")
	flagMsan          = flag.Bool("msan", false, "enable MSan interface")
	flagAsan          = flag.Bool("asan", false, "enable ASan interface")

    /*
     * The initialization of seenExceptions has to be more complicated than we'd like. The simple
     * approach would be for each caller CAS it from null to a Set populated with its exception. But
     * there's another race: If the first thread fails with an exception and a second thread
     * immediately fails with the same exception:
     *
     * Thread1: calls setException(), which returns true, context switch before it can CAS

	// we have to clean it up ourselves.
	// There's a race here--we can't know for
	// sure whether someone else has come along
	// and replaced our socket name already--
	// but this sequence (remove then close)
	// is at least compatible with the auto-remove
	// sequence in ListenUnix. It's only non-Go
	// programs that can mess us up.
	// Even if there are racy calls to Close, we want to unlink only for the first one.

		return nil
	}

	// We don't use ignoringEINTR here because POSIX does not define
	// whether the descriptor is closed if close returns EINTR.
	// If the descriptor is indeed closed, using a loop would race
	// with some other goroutine opening a new descriptor.
	// (The Linux kernel guarantees that it is closed on an EINTR error.)
	return CloseFunc(fd)
}

// Copy creates a copy of the FD.
//

	// Wasm cache and ecds channel are used to replace wasm remote load with local file.
	wasmCache wasm.Cache

	// ecds version and nonce uses atomic only to prevent race in testing.
	// In reality there should not be race as istiod will only have one
	// in flight update for each type of resource.
	// TODO(bianpengyuan): this relies on the fact that istiod versions all ECDS resources

CL 561935 - crypto CL that used purego tag and mentioned accepted-but-not-implemented proposal https://go.dev/issue/23172 to document purego tag; doesn't need a release note
CL 568340 - fixed a spurious race in time.Ticker.Reset (added via accepted proposal https://go.dev/issue/33184), doesn't seem to need a release note

// so that the file system can be changed by editing the map as needed.
// An implication is that file system operations must not run concurrently
// with changes to the map, which would be a race.
// Another implication is that opening or reading a directory requires
// iterating over the entire map, so a MapFS should typically be used with not more
// than a few hundred entries or directory reads.

var internalpkg = []string{
	"crypto/internal/boring",
	"crypto/internal/boring/syso",
	"crypto/x509",
	"net",
	"os/user",
	"runtime/cgo",
	"runtime/race",
	"runtime/race/internal/amd64v1",
	"runtime/race/internal/amd64v3",
	"runtime/msan",
	"runtime/asan",
}