Hi
On Mon, Mar 07, 2016 at 08:45:59PM -0300, Diego Nieto Cid wrote:
>
> I'm not sure what's going on. I've made some simple tests trying
> to imitate the setup but weak symbols were correctly overriden.
>
Well, this is weird. I added a call to cthread_getspecific to the
test program, and now there are two definitions of that function.
diego@hird:~/src/test-cases/dlopen-error$ gdb ./main.pthread
GNU gdb (Debian 7.10-1+b1) 7.10
...
Reading symbols from ./main.pthread...done.
(gdb) break cthread_getspecific
Breakpoint 1 at 0x8048590
(gdb) run
Starting program: /home/diego/src/test-cases/dlopen-error/main.pthread
[New Thread 1119.5]
Breakpoint 1, cthread_getspecific (key=0, val=0x2003ce8)
at ./pthread/cthreads-compat.c:68
68 {
(gdb) bt
#0 cthread_getspecific (key=0, val=0x2003ce8)
at ./pthread/cthreads-compat.c:68
#1 0x080486f2 in main (argc=1, argv=0x2003d84) at main.c:16
(gdb) c
Continuing.
0x128d688
Breakpoint 1, cthread_getspecific (key=-1, pval=0x2003c8c)
at ../sysdeps/mach/hurd/cthreads.c:42
42 *pval = NULL;
(gdb) bt
#0 cthread_getspecific (key=-1, pval=0x2003c8c)
at ../sysdeps/mach/hurd/cthreads.c:42
#1 0x0109068a in __libc_getspecific (key=-1)
at ../sysdeps/mach/hurd/cthreads.c:69
#2 0x01034218 in __dlerror () at dlerror.c:74
#3 0x08048737 in main (argc=1, argv=0x2003d84) at main.c:23
(gdb) c
...
>From the main function, the pthread implementation is called but
from libdl the implementation provided by libc is used.
Thanks,
Diego
