Comment # 2 on bug 1065556 from Dr. Werner Fink

        libncursesw.so.6 => /lib64/libncursesw.so.6 (0x00007fb376124000)
        libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007fb375ef9000)


wrong linkage ... this tool has to use libtinfow if linked with libncursesw

/suse/werner> ldd /usr/bin/tty-clock 
        linux-vdso.so.1 (0x00007ffc4697d000)
        libncursesw.so.6 => /lib64/libncursesw.so.6 (0x00007fb376124000)
        libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007fb375ef9000)
^^^^^^^^^^^^^^^^^^^^^
        libc.so.6 => /lib64/libc.so.6 (0x00007fb375b3f000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007fb37593b000)
        libtinfow.so.6 => /lib64/libtinfow.so.6 (0x00007fb37570f000)
^^^^^^^^^^^^^^^^^^^^^^
        /lib64/ld-linux-x86-64.so.2 (0x00007fb37635f000)
/suse/werner> ldd /lib64/libncursesw.so.6
        linux-vdso.so.1 (0x00007ffee07a6000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f04e433e000)
        libtinfow.so.6 => /lib64/libtinfow.so.6 (0x00007f04e4112000)
^^^^^^^^^^^^^^^^^^^^^^
        libc.so.6 => /lib64/libc.so.6 (0x00007f04e3d58000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f04e477d000)