# readelf -s ./lib/5.36.1/i686-linux/auto/threads/threads.so |  grep FUNC
     5: 00000000     0 FUNC    WEAK   DEFAULT  UND __cxa_finalize@GLIBC_2.1.3 (2)
     8: 00000470    81 FUNC    GLOBAL DEFAULT   11 boot_threads
    10: 0000031c     0 FUNC    GLOBAL DEFAULT    9 _init
    11: 00000508     0 FUNC    GLOBAL DEFAULT   12 _fini
    28: 000003a0     0 FUNC    LOCAL  DEFAULT   11 __do_global_dtors_aux
    31: 00000430     0 FUNC    LOCAL  DEFAULT   11 frame_dummy
    36: 000004d0     0 FUNC    LOCAL  DEFAULT   11 __do_global_ctors_aux
    41: 00000469     0 FUNC    LOCAL  DEFAULT   11 __i686.get_pc_thunk.bx
    45: 00000508     0 FUNC    GLOBAL DEFAULT   12 _fini
    46: 00000470    81 FUNC    GLOBAL DEFAULT   11 boot_threads
    52: 00000000     0 FUNC    WEAK   DEFAULT  UND __cxa_finalize@@GLIBC_2.1
    53: 0000031c     0 FUNC    GLOBAL DEFAULT    9 _init