c0 := Background()
	check(c0, "c0", "", "", "")

	c1 := WithValue(Background(), k1, "c1k1")
	check(c1, "c1", "c1k1", "", "")

	if got, want := fmt.Sprint(c1), `context.Background.WithValue(context_test.key1, c1k1)`; got != want {
		t.Errorf("c.String() = %q want %q", got, want)
	}

	c2 := WithValue(c1, k2, "c2k2")
	check(c2, "c2", "c1k1", "c2k2", "")

                withFile("root-f2")
                "b" {
                    withFile("b-f1")
                }
                "c" {
                    "c1" {
                        "c11" {
                            withFile("c11-f1")
                        }
                    }
                }
                "a" {
                    "a2" {
                        withFile("a2-f2")

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	c1 complex128 = c0
	c2 = +1
	c3 = +c0
	c4 complex128 = +1
	c5 complex128 = +c4
	c6 = -1
	c7 = -c0
	c8 complex128 = -1
	c9 complex128 = -c4
	c10 = !c0 /* ERROR "not defined" */
	c11 = ^1
	c12 = ^i0
	c13 complex128 = ^1
	c14 complex128 = ^c4 /* ERROR "not defined" */
	c15 = *c0 /* ERROR "cannot indirect" */
	c16 = &c0
	c17 = *u16
	c18 = <-u16 /* ERROR "cannot receive" */

	}
	// arm64:`CMN`,-`CMP`
	if a*c+b != 0 {
		c9 = 1
	}
	// arm64:`CMP`,-`CMN`
	if b*c-a == 0 {
		c10 = 1
	}
	// arm64:`CMP`,-`CMN`
	if a*d-b != 0 {
		c11 = 1
	}
	return c1 + c2 + c3 + c4 + c5 + c6 + c7 + c8 + c9 + c10 + c11
}

func cmpToCmnLessThan(a, b, c, d int) int {
	var c1, c2, c3, c4 int
	// arm64:`CMN`,`CSET\tMI`,-`CMP`
	if a+1 < 0 {
		c1 = 1
	}

		[]relocationTestEntry{
			{
				entry: &dwarf.Entry{
					Offset:   0xb,
					Tag:      dwarf.TagCompileUnit,
					Children: true,
					Field: []dwarf.Field{
						{Attr: dwarf.AttrProducer, Val: "GNU C11 5.0.0 20150116 (experimental) -Asystem=linux -Asystem=unix -Asystem=posix -g", Class: dwarf.ClassString},
						{Attr: dwarf.AttrLanguage, Val: int64(12), Class: dwarf.ClassConstant},

	}
	if runtime.GOOS == "windows" {
		t.Skipf("skipping: test requires pthread support")
		// TODO: Can this test be rewritten to use the C11 thread API instead?
	}

	testenv.MustHaveGoRun(t)

	// This test requires building various packages with -race, so
	// it's somewhat slow.
	if testing.Short() {
		t.Skip("skipping test in -short mode")

        "//tensorflow/core:session_options",
        "//tensorflow/core:test",
    ],
)

tf_cc_test(
    name = "c_test",
    srcs = ["c_test.c"],
    extra_copts = ["-std=c11"],
    deps = [
        ":c_api",
        ":c_api_experimental",
        ":env",
        ":kernels",
    ],
)

tf_cuda_cc_test(
    name = "c_api_test",
    size = "medium",

// sections of code).
// RaceAcquire establishes a happens-before relation with the preceding
// RaceReleaseMerge on addr up to and including the last RaceRelease on addr.
// In terms of the C memory model (C11 §5.1.2.4, §7.17.3),
// RaceAcquire is equivalent to atomic_load(memory_order_acquire).
//
//go:nosplit
func RaceAcquire(addr unsafe.Pointer) {
	raceacquire(addr)
}

  // CHECK: %[[SHAPE0:.*]] = shape.shape_of %arg0 : tensor<?x?xf16> -> tensor<2xindex>
  // CHECK-DAG: %[[C1_1:.*]] = arith.constant 1 : index
  // CHECK-DAG: %[[C1_2:.*]] = arith.constant 1 : index
  // CHECK: %[[REDUCED_DIM:.*]] = tensor.extract %[[SHAPE0]][%[[C1_2]]] : tensor<2xindex>
  // CHECK: %[[MUL:.*]] = arith.muli %[[C1_1]], %[[REDUCED_DIM]] : index
  // CHECK: %[[INDEX_CAST:.*]] = arith.index_cast %[[MUL]] : index to i64