}
	return args
}

// CFlags returns the flags to use when invoking the C, C++ or Fortran compilers, or cgo.
func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, ldflags []string, err error) {
	if cppflags, err = buildFlags("CPPFLAGS", "", p.CgoCPPFLAGS, checkCompilerFlags); err != nil {
		return
	}
	if cflags, err = buildFlags("CFLAGS", DefaultCFlags, p.CgoCFLAGS, checkCompilerFlags); err != nil {

}

func TestToleratesOptimizationFlag(t *testing.T) {
	for _, cflags := range []string{
		"",
		"-O",
	} {
		cflags := cflags
		t.Run(cflags, func(t *testing.T) {
			testenv.MustHaveGoBuild(t)
			testenv.MustHaveCGO(t)
			t.Parallel()

			cmd := exec.Command("go", "build", path("issue14669.go"))
			cmd.Env = append(os.Environ(), "CGO_CFLAGS="+cflags)
			out, err := cmd.CombinedOutput()
			if err != nil {

			c.cFlags = append(c.cFlags, "-fPIC")
			c.ldFlags = append(c.ldFlags, "-fPIC", "-static-libtsan")
		}

	case "address":
		c.goFlags = append(c.goFlags, "-asan")
		// Set the debug mode to print the C stack trace.
		c.cFlags = append(c.cFlags, "-g")

	case "fuzzer":
		c.goFlags = append(c.goFlags, "-tags=libfuzzer", "-gcflags=-d=libfuzzer")

	default:

	defer func() {
		if err := b.Close(); err != nil {
			base.Fatal(err)
		}
	}()

	cppflags, cflags, cxxflags, fflags, ldflags, err := b.CFlags(&load.Package{})
	if err != nil {
		// Should not happen - b.CFlags was given an empty package.
		fmt.Fprintf(os.Stderr, "go: invalid cflags: %v\n", err)
		return nil
	}
	cmd := b.GccCmd(".", "")

	join := func(s []string) string {

) >_const.go

# Pull out the error names for later.
errors=$(
	echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
	awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
	sort
)

# Pull out the signal names for later.
signals=$(
	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
	sort

[short] skip # rebuilds all of std

# Set up fresh GOCACHE.
env GOCACHE=$WORK/gocache
mkdir $GOCACHE

# Verify the standard library (specifically internal/runtime/atomic) can be
# built with -gcflags when -n is given. See golang.org/issue/29346.
go build -n -gcflags=all='-l' std

		extraLDFlags := ""
		if strings.Contains(testenv.Builder(), "clang") {
			extraLDFlags += " -fuse-ld=lld"
		}
		const cflags = "-flto -Wno-lto-type-mismatch -Wno-unknown-warning-option"
		cmd.Env = append(cmd.Environ(),
			"CGO_CFLAGS="+cflags,
			"CGO_CXXFLAGS="+cflags,
			"CGO_LDFLAGS="+cflags+extraLDFlags)
	}
	out, err := cmd.CombinedOutput()
	if string(out) != "OK\n" {
		t.Errorf("%s", string(out))
	}

			enabled[a] = enable
		}

		a.Flags.VisitAll(func(f *flag.Flag) {
			if !multi && flag.Lookup(f.Name) != nil {
				log.Printf("%s flag -%s would conflict with driver; skipping", a.Name, f.Name)
				return
			}

			name := prefix + f.Name
			flag.Var(f.Value, name, f.Usage)
		})
	}

	// standard flags: -flags, -V.
	printflags := flag.Bool("flags", false, "print analyzer flags in JSON")
	addVersionFlag()

	"istio.io/istio/pkg/test/framework/config"
	"istio.io/istio/pkg/test/framework/label"
)

var settingsFromCommandLine = DefaultSettings()

// SettingsFromCommandLine returns settings obtained from command-line flags. config.Parse must be called before
// calling this function.
func SettingsFromCommandLine(testID string) (*Settings, error) {
	if !config.Parsed() {
		panic("config.Parse must be called before this function")
	}

See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/

#include "tensorflow/compiler/jit/flags.h"

#include <limits>
#include <mutex>  // NOLINT
#include <optional>
#include <vector>

#include "absl/base/call_once.h"
#include "absl/strings/numbers.h"
#include "absl/strings/str_split.h"