Add comment about out-of-bounds being on purpose

        if (prctl(PR_SET_TAGGED_ADDR_CTRL, res & ~PR_MTE_TCF_SYNC, 0, 0, 0) == -1) abort();

    }

    std::unique_ptr<volatile char[]> f(new char[1]);

    // This out-of-bounds is on purpose: we are testing MTE, which is designed to turn

    // out-of-bound errors into segfaults.

    // This binary gets run by src/com/android/tests/init/MteUpgradeTest.java, which

    // asserts that it crashes as expected.

    f[17] = 'x';

    char buf[1];

    read(1, buf, 1);