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Re: PATCH: Unset _dl_dynamic_weak


On Tue, Sep 11, 2001 at 05:02:03PM -0700, Ulrich Drepper wrote:
> "H . J . Lu" <hjl@lucon.org> writes:
> 
> > Ulrich, I ran "make check" with LD_DYNAMIC_WEAK set. I didn't see any
> > problems. Do you have a testcase for it?
> 
> It interposing of thread and librt libraries.  I won't apply the patch

Which symbols should I watch for? I am enclosing symbols from
/lib/librt.so.1 and /lib/libpthread.so.0.


H.J.
----
# objdump --dynamic-sym /lib/librt.so.1 | grep -v UND | grep GLIBC
000044e4 g    DF .text	00000189  GLIBC_2.2   clock_gettime
000053f0 g    DF .text	00000188  GLIBC_2.2   shm_open
00004924 g    DF .text	000002d3  GLIBC_2.2   timer_create
00002474  w   DF .text	0000015a  GLIBC_2.1   aio_cancel64
00002474 g    DF .text	0000015a  GLIBC_2.1   aio_cancel
00004674 g    DF .text	000001c5  GLIBC_2.2   clock_settime
00004c04 g    DF .text	00000143  GLIBC_2.2   timer_delete
00000000 g    DO *ABS*	00000000  GLIBC_2.1   GLIBC_2.1
00004df4 g    DF .text	00000133  GLIBC_2.2   timer_gettime
00004414 g    DF .text	000000c6  GLIBC_2.2   clock_getres
000025e4 g    DF .text	00000053  GLIBC_2.1   aio_fsync
00003304 g    DF .text	0000002a  GLIBC_2.1   aio_read
00003334 g    DF .text	0000002d  GLIBC_2.1   aio_read64
000025d0  w   DF .text	0000000b  GLIBC_2.1   aio_error64
00003384  w   DF .text	000002b1  GLIBC_2.1   aio_suspend64
00003384 g    DF .text	000002b1  GLIBC_2.1   aio_suspend
000025d0 g    DF .text	0000000b  GLIBC_2.1   aio_error
000043d4 g    DF .text	00000039  GLIBC_2.2   clock_getcpuclockid
00000000 g    DO *ABS*	00000000  GLIBC_2.2   GLIBC_2.2
00005580 g    DF .text	000000f5  GLIBC_2.2   shm_unlink
00003af4 g    DF .text	00000354  GLIBC_2.1   lio_listio64
00004d54 g    DF .text	00000090  GLIBC_2.2   timer_getoverrun
00003684 g    DF .text	0000002d  GLIBC_2.1   aio_write64
00003370 g    DF .text	0000000b  GLIBC_2.1   aio_return
000025e4  w   DF .text	00000053  GLIBC_2.1   aio_fsync64
00002ff0  w   DF .text	0000007e  GLIBC_2.1   aio_init
00003370  w   DF .text	0000000b  GLIBC_2.1   aio_return64
00003644 g    DF .text	0000002d  GLIBC_2.1   aio_write
00004844 g    DF .text	000000d3  GLIBC_2.2   clock_nanosleep
00004f34 g    DF .text	000002c3  GLIBC_2.2   timer_settime
000036c4 g    DF .text	00000425  GLIBC_2.1   lio_listio
# objdump --dynamic-sym /lib/libpthread.so.0 | grep -v UND | grep GLIBC
000089d4 g    DF .text	000000d5  GLIBC_2.0   longjmp
00015ef8 g    DO .data	00000004  GLIBC_2.0   __libc_internal_tsd_set
00009d40  w   DF .text	0000001b  GLIBC_2.2   pthread_yield
0000b790 g    DF .text	00000055  GLIBC_2.1   sem_trywait
00005710 g    DF .text	0000005b  GLIBC_2.1   pthread_attr_init
0000e2e0 g    DF .text	00000017  GLIBC_2.2   pthread_barrier_destroy
0000d9d0  w   DF .text	000000a1  GLIBC_2.2   __pthread_rwlock_trywrlock
00008070 g    DF .text	000001ad  GLIBC_2.2   pthread_mutex_timedlock
0000c870  w   DF .text	0000004f  GLIBC_2.0   waitpid
0000c420  w   DF .text	00000055 (GLIBC_2.2)  lseek64
0000c6f0  w   DF .text	0000003e  GLIBC_2.0   pause
00006480 g    DF .text	00000061  GLIBC_2.0   pthread_cond_signal
00008580 g    DF .text	00000007  GLIBC_2.0   __pthread_mutexattr_destroy
0000d8f0 g    DF .text	00000019  GLIBC_2.1   pthread_rwlockattr_setkind_np
0000b044 g    DF .text	00000213  GLIBC_2.1   sem_wait
0000e100  w   DF .text	00000018  GLIBC_2.2   pthread_spin_trylock
000086b0  w   DF .text	00000011  GLIBC_2.1   pthread_mutexattr_gettype
00005340 g    DF .text	00000007  GLIBC_2.0   pthread_attr_destroy
0000c920  w   DF .text	00000051  GLIBC_2.0   recv
0000c220  w   DF .text	0000004f  GLIBC_2.0   connect
00005680  w   DF .text	00000012  GLIBC_2.1   pthread_attr_getstacksize
00008390 g    DF .text	0000012e  GLIBC_2.0   __pthread_once
00007f00 g    DF .text	0000016d  GLIBC_2.0   __pthread_mutex_lock
0000abd0 g    DF .text	0000009e  GLIBC_2.0   pthread_getspecific
0000ca24 g    DF .text	0000027d  GLIBC_2.1   pthread_rwlock_rdlock
000086b0  w   DF .text	00000011  GLIBC_2.0   pthread_mutexattr_getkind_np
0000d910 g    DF .text	00000055  GLIBC_2.1   pthread_rwlock_init
00009140 g    DF .text	00000161 (GLIBC_2.0)  pthread_create
0000d8d0 g    DF .text	00000011  GLIBC_2.1   pthread_rwlockattr_getkind_np
00006c40 g    DF .text	0000001c  GLIBC_2.0   pthread_exit
0000b400 g    DF .text	000002ca  GLIBC_2.2   sem_timedwait
0000e310 g    DF .text	00000007  GLIBC_2.2   pthread_barrierattr_destroy
0000d3b0 g    DF .text	00000209  GLIBC_2.2   pthread_rwlock_timedwrlock
0000b810 g    DF .text	00000034  GLIBC_2.1   sem_destroy
000065a0 g    DF .text	0000001e  GLIBC_2.2   pthread_condattr_setpshared
0000d8a0 g    DF .text	0000002e  GLIBC_2.1   pthread_rwlockattr_setpshared
0000c520 g    DF .text	0000004f  GLIBC_2.0   __write
000056f0  w   DF .text	0000001e  GLIBC_2.2   pthread_attr_getstack
0000c690  w   DF .text	00000057  GLIBC_2.1   pwrite64
00008590 g    DF .text	00000029  GLIBC_2.0   __pthread_mutexattr_settype
0000d910  w   DF .text	00000055  GLIBC_2.2   __pthread_rwlock_init
0000aa40 g    DF .text	00000083  GLIBC_2.0   __pthread_key_create
0000e0e0  w   DF .text	00000013  GLIBC_2.2   pthread_spin_lock
00009850 g    DF .text	00000045  GLIBC_2.1   __libc_current_sigrtmax
00006570 g    DF .text	00000007  GLIBC_2.0   pthread_condattr_init
0000d2b0  w   DF .text	000000f1  GLIBC_2.2   __pthread_rwlock_wrlock
0000e044 g    DF .text	0000008e  GLIBC_2.2   pthread_getcpuclockid
00005630  w   DF .text	00000012  GLIBC_2.1   pthread_attr_getstackaddr
0000a744 g    DF .text	00000155  GLIBC_2.0   pthread_key_delete
0000c4d0 g    DF .text	0000004f  GLIBC_2.0   __read
00005b90 g    DF .text	00000093  GLIBC_2.0   _pthread_cleanup_pop
000088d0 g    DF .text	000000f1  GLIBC_2.0   __pthread_atfork
0000af20 g    DF .text	00000028  GLIBC_2.0   _IO_funlockfile
0000b730 g    DF .text	0000005f  GLIBC_2.1   sem_init
00015f04 g    DO .data	00000004  GLIBC_2.2.3 __libc_rpc_internal_tsd_get
000057a4 g    DF .text	00000112  GLIBC_2.0   pthread_cancel
00008580 g    DF .text	00000007  GLIBC_2.0   pthread_mutexattr_destroy
00000000 g    DO *ABS*	00000000  GLIBC_2.1.1 GLIBC_2.1.1
000099a0 g    DF .text	00000010  GLIBC_2.0   pthread_equal
00009d60 g    DF .text	00000119  GLIBC_2.1   pthread_create
000084c0 g    DF .text	00000034  GLIBC_2.0   __pthread_mutex_init
00009800 g    DF .text	00000045  GLIBC_2.1   __libc_current_sigrtmin
0000aef4 g    DF .text	00000028  GLIBC_2.0   _IO_flockfile
0000c780  w   DF .text	00000044  GLIBC_2.0   system
0000c130 g    DF .text	0000004f  GLIBC_2.0   __open
00000000 g    DO *ABS*	00000000  GLIBC_2.1   GLIBC_2.1
00008ab0 g    DF .text	000000d9  GLIBC_2.0   siglongjmp
0000c690  w   DF .text	00000057 (GLIBC_2.2)  pwrite64
000054e0 g    DF .text	00000012  GLIBC_2.0   pthread_attr_getscope
0000d070  w   DF .text	00000237  GLIBC_2.2   __pthread_rwlock_tryrdlock
0000d970 g    DF .text	00000051  GLIBC_2.1   pthread_rwlock_destroy
0000c270  w   DF .text	0000005b  GLIBC_2.0   recvfrom
0000c7d0  w   DF .text	00000044  GLIBC_2.0   tcdrain
000055f0  w   DF .text	00000012  GLIBC_2.1   pthread_attr_getguardsize
0000ca24  w   DF .text	0000027d  GLIBC_2.2   __pthread_rwlock_rdlock
00005a60 g    DF .text	0000008c  GLIBC_2.0   pthread_testcancel
0000ddf0 g    DF .text	0000005a (GLIBC_2.0)  sem_trywait
0000c5d0  w   DF .text	00000051 (GLIBC_2.2)  pwrite
0000d5c0 g    DF .text	00000299  GLIBC_2.1   pthread_rwlock_unlock
00005ce0 g    DF .text	000000c1  GLIBC_2.0   _pthread_cleanup_pop_restore
00005490 g    DF .text	00000012  GLIBC_2.0   pthread_attr_getinheritsched
0000d5c0  w   DF .text	00000299  GLIBC_2.2   __pthread_rwlock_unlock
00009530  w   DF .text	00000191  GLIBC_2.0   pthread_kill_other_threads_np
0000b700 g    DF .text	00000026  GLIBC_2.1.1 sem_unlink
00009530 g    DF .text	00000191  GLIBC_2.1.2 __pthread_kill_other_threads_np
00009b60  w   DF .text	0000000e  GLIBC_2.0   __pthread_initialize
0000c3d0  w   DF .text	0000004f  GLIBC_2.0   lseek
0000dba4 g    DF .text	000001e3 (GLIBC_2.0)  sem_wait
0000c820 g    DF .text	00000044  GLIBC_2.0   __wait
00006ae0 g    DF .text	00000154  GLIBC_2.0   pthread_detach
0000c8c0  w   DF .text	00000051  GLIBC_2.0   send
00005450 g    DF .text	00000012  GLIBC_2.0   pthread_attr_getschedpolicy
0000af50  w   DF .text	00000028  GLIBC_2.0   ftrylockfile
00005610  w   DF .text	00000017  GLIBC_2.1   pthread_attr_setstackaddr
0000c1d0  w   DF .text	0000004f  GLIBC_2.0   accept
000098a0 g    DF .text	0000007a  GLIBC_2.1   __libc_allocate_rtsig
00009aa0 g    DF .text	000000bb  GLIBC_2.0   pthread_getschedparam
000058c0 g    DF .text	000000c1  GLIBC_2.0   pthread_setcancelstate
0000c380  w   DF .text	0000004a  GLIBC_2.0   nanosleep
00015efc g    DO .data	00000004  GLIBC_2.0   __libc_internal_tsd_get
00008220 g    DF .text	0000016b  GLIBC_2.0   __pthread_mutex_unlock
00000000 g    DO *ABS*	00000000  GLIBC_2.1.2 GLIBC_2.1.2
0000abd0 g    DF .text	0000009e  GLIBC_2.0   __pthread_getspecific
00006580 g    DF .text	00000007  GLIBC_2.0   pthread_condattr_destroy
0000c520  w   DF .text	0000004f  GLIBC_2.0   write
000054b0 g    DF .text	0000002e  GLIBC_2.0   pthread_attr_setscope
0000c630  w   DF .text	00000057 (GLIBC_2.2)  pread64
00007cf4 g    DF .text	00000206  GLIBC_2.0   __pthread_mutex_trylock
00008590  w   DF .text	00000029  GLIBC_2.0   pthread_mutexattr_setkind_np
0000e474 g    DF .text	0000007d  GLIBC_2.2.3 __pthread_clock_settime
0000dd90 g    DF .text	00000055 (GLIBC_2.0)  sem_init
0000b260 g    DF .text	00000161  GLIBC_2.1   sem_post
00005770 g    DF .text	0000002c (GLIBC_2.0)  pthread_attr_init
0000ccb0 g    DF .text	000003b1  GLIBC_2.2   pthread_rwlock_timedrdlock
000064f0 g    DF .text	00000070  GLIBC_2.0   pthread_cond_broadcast
00008390 g    DF .text	0000012e  GLIBC_2.0   pthread_once
0000c8c0 g    DF .text	00000051  GLIBC_2.0   __send
00005470 g    DF .text	0000001a  GLIBC_2.0   pthread_attr_setinheritsched
000099b0 g    DF .text	000000e7  GLIBC_2.0   pthread_setschedparam
0000e320 g    DF .text	00000019  GLIBC_2.2   pthread_barrierattr_setpshared
0000aa40 g    DF .text	00000083  GLIBC_2.0   pthread_key_create
0000c820  w   DF .text	00000044  GLIBC_2.0   wait
00009c70  w   DF .text	0000001d  GLIBC_2.1   pthread_setconcurrency
0000c180  w   DF .text	0000004f (GLIBC_2.2)  open64
00008500 g    DF .text	00000067  GLIBC_2.0   __pthread_mutex_destroy
0000e300 g    DF .text	00000010  GLIBC_2.2   pthread_barrierattr_init
00000000 g    DO *ABS*	00000000  GLIBC_2.0   GLIBC_2.0
0000b6d0 g    DF .text	00000026  GLIBC_2.1.1 sem_close
0000a3a0 g    DF .text	00000099  GLIBC_2.0   pthread_kill
0000c4d0  w   DF .text	0000004f  GLIBC_2.0   read
00005500 g    DF .text	000000c7  GLIBC_2.2.3 pthread_getattr_np
0000c630  w   DF .text	00000057  GLIBC_2.1   pread64
00005650  w   DF .text	00000025  GLIBC_2.1   pthread_attr_setstacksize
0000c980  w   DF .text	0000004f  GLIBC_2.0   sendmsg
0000c630 g    DF .text	00000057  GLIBC_2.1   __pread64
0000d2b0 g    DF .text	000000f1  GLIBC_2.1   pthread_rwlock_wrlock
0000d880 g    DF .text	00000012  GLIBC_2.1   pthread_rwlockattr_getpshared
0000af50 g    DF .text	00000028  GLIBC_2.0   _IO_ftrylockfile
0000e140  w   DF .text	00000007  GLIBC_2.2   pthread_spin_destroy
0000c2d0  w   DF .text	0000005b  GLIBC_2.0   sendto
0000af20  w   DF .text	00000028  GLIBC_2.0   funlockfile
0000a2d0 g    DF .text	000000d0  GLIBC_2.0   pthread_sigmask
0000c630 g    DF .text	00000057 (GLIBC_2.2)  __pread64
00006440 g    DF .text	0000001e  GLIBC_2.0   pthread_cond_init
0000e120  w   DF .text	00000010  GLIBC_2.2   pthread_spin_unlock
0000d860 g    DF .text	00000017  GLIBC_2.1   pthread_rwlockattr_init
00008800  w   DF .text	000000c6  GLIBC_2.0   fork
00008680  w   DF .text	00000010  GLIBC_2.2   pthread_mutexattr_getpshared
00000000 g    DO *ABS*	00000000  GLIBC_2.2.3 GLIBC_2.2.3
0000a440 g    DF .text	0000010e  GLIBC_2.0   sigaction
00008570 g    DF .text	00000010  GLIBC_2.0   __pthread_mutexattr_init
00000000 g    DO *ABS*	00000000  GLIBC_2.2   GLIBC_2.2
00006590 g    DF .text	00000010  GLIBC_2.2   pthread_condattr_getpshared
00005c30 g    DF .text	000000a3  GLIBC_2.0   _pthread_cleanup_push_defer
0000d970  w   DF .text	00000051  GLIBC_2.2   __pthread_rwlock_destroy
0000e2a0 g    DF .text	00000037  GLIBC_2.2   pthread_barrier_init
000056a0  w   DF .text	0000004c  GLIBC_2.2   pthread_attr_setstack
0000c180  w   DF .text	0000004f  GLIBC_2.1   open64
00008590  w   DF .text	00000029  GLIBC_2.1   pthread_mutexattr_settype
00008690  w   DF .text	0000001e  GLIBC_2.2   pthread_mutexattr_setpshared
00005370 g    DF .text	00000011  GLIBC_2.0   pthread_attr_getdetachstate
0000c3d0 g    DF .text	0000004f  GLIBC_2.0   __lseek
0000e364 g    DF .text	000000fd  GLIBC_2.2.3 __pthread_clock_gettime
00008220 g    DF .text	0000016b  GLIBC_2.0   pthread_mutex_unlock
0000adf0 g    DF .text	00000071  GLIBC_2.0   __h_errno_location
0000e154 g    DF .text	00000145  GLIBC_2.2   pthread_barrier_wait
0000ae70 g    DF .text	00000071  GLIBC_2.2   __res_state
00008724 g    DF .text	000000d2  GLIBC_2.1.2 __vfork
0000c330  w   DF .text	0000004f  GLIBC_2.0   msync
0000da80 g    DF .text	00000007  GLIBC_2.1   pthread_rwlockattr_destroy
0000b3d0 g    DF .text	00000023  GLIBC_2.1.1 sem_open
0000aef4  w   DF .text	00000028  GLIBC_2.0   flockfile
00008724  w   DF .text	000000d2  GLIBC_2.0   vfork
0000d9d0 g    DF .text	000000a1  GLIBC_2.1   pthread_rwlock_trywrlock
0000d070 g    DF .text	00000237  GLIBC_2.1   pthread_rwlock_tryrdlock
0000c730  w   DF .text	00000044  GLIBC_2.0   fsync
0000c220 g    DF .text	0000004f  GLIBC_2.0   __connect
0000c570  w   DF .text	00000051  GLIBC_2.1   pread
00005af0 g    DF .text	00000093  GLIBC_2.0   _pthread_cleanup_push
00009920 g    DF .text	00000071  GLIBC_2.0   pthread_self
00005990 g    DF .text	000000c1  GLIBC_2.0   pthread_setcanceltype
0000e130  w   DF .text	00000010  GLIBC_2.2   pthread_spin_init
00008570 g    DF .text	00000010  GLIBC_2.0   pthread_mutexattr_init
0000b7f0 g    DF .text	00000012  GLIBC_2.1   sem_getvalue
0000c480 g    DF .text	00000044  GLIBC_2.0   __close
0000c690 g    DF .text	00000057 (GLIBC_2.2)  __pwrite64
00008500 g    DF .text	00000067  GLIBC_2.0   pthread_mutex_destroy
00007f00 g    DF .text	0000016d  GLIBC_2.0   pthread_mutex_lock
0000a440 g    DF .text	0000010e  GLIBC_2.0   __sigaction
00005e84 g    DF .text	0000027e  GLIBC_2.0   pthread_cond_wait
0000df10 g    DF .text	00000032 (GLIBC_2.0)  sem_destroy
0000ad74 g    DF .text	0000006d  GLIBC_2.0   __errno_location
000055d0  w   DF .text	0000001c  GLIBC_2.1   pthread_attr_setguardsize
0000aad0 g    DF .text	000000f9  GLIBC_2.0   __pthread_setspecific
00007cf4 g    DF .text	00000206  GLIBC_2.0   pthread_mutex_trylock
000088d0 g    DF .text	000000f1  GLIBC_2.0   pthread_atfork
0000c690 g    DF .text	00000057  GLIBC_2.1   __pwrite64
0000dee0 g    DF .text	00000028 (GLIBC_2.0)  sem_getvalue
0000de50 g    DF .text	00000082 (GLIBC_2.0)  sem_post
00006460 g    DF .text	00000017  GLIBC_2.0   pthread_cond_destroy
00015f00 g    DO .data	00000004  GLIBC_2.2.3 __libc_rpc_internal_tsd_set
00005430 g    DF .text	0000001a  GLIBC_2.0   pthread_attr_setschedpolicy
000084c0 g    DF .text	00000034  GLIBC_2.0   pthread_mutex_init
0000c420  w   DF .text	00000055  GLIBC_2.1   lseek64
0000c130  w   DF .text	0000004f  GLIBC_2.0   open
0000c0d4 g    DF .text	0000004f  GLIBC_2.0   __fcntl
00008800 g    DF .text	000000c6  GLIBC_2.0   __fork
00005394 g    DF .text	00000067  GLIBC_2.0   pthread_attr_setschedparam
00005350 g    DF .text	00000019  GLIBC_2.0   pthread_attr_setdetachstate
0000c9d0  w   DF .text	0000004f  GLIBC_2.0   recvmsg
0000c0d4  w   DF .text	0000004f  GLIBC_2.0   fcntl
00006810 g    DF .text	000002c5  GLIBC_2.0   pthread_join
0000c180 g    DF .text	0000004f  GLIBC_2.2   __open64
00009c50  w   DF .text	00000018  GLIBC_2.1   pthread_getconcurrency
00006560 g    DF .text	0000000e  GLIBC_2.0   pthread_cond_timedwait
0000a044 g    DF .text	000001c5  GLIBC_2.0   sigwait
0000c5d0  w   DF .text	00000051  GLIBC_2.1   pwrite
0000c480  w   DF .text	00000044  GLIBC_2.0   close
00005400 g    DF .text	00000024  GLIBC_2.0   pthread_attr_getschedparam
0000c570  w   DF .text	00000051 (GLIBC_2.2)  pread
0000aad0 g    DF .text	000000f9  GLIBC_2.0   pthread_setspecific
0000a210 g    DF .text	000000b8  GLIBC_2.0   raise


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