libc {
  GLIBC_2.19 {
    setjmp; _setjmp; __setjmp; __sigsetjmp;
    longjmp; _longjmp; siglongjmp;
  }
  GLIBC_PRIVATE {
    __v1__libc_longjmp; __v1__libc_siglongjmp;
    __v2__libc_longjmp; __v2__libc_siglongjmp;
  }
}

ld {
  GLIBC_2.3 {
    # runtime interface to TLS
    __tls_get_offset;
  }
  GLIBC_PRIVATE {
    # Exported by ld used by libc.
    __tls_get_addr_internal;
  }
}