Re: [PATCH] Handle absence of DT_DEBUG while debugging ld.so

[Luis Machado <luisgpm at linux dot vnet dot ibm dot com>]

Ping?

On Tue, 2008-08-12 at 15:12 -0300, Luis Machado wrote:
> Ping?
> 
> On Tue, 2008-07-29 at 09:45 -0300, Luis Machado wrote:
> > On Tue, 2008-07-29 at 08:12 -0400, Daniel Jacobowitz wrote:
> > > On Mon, Jul 28, 2008 at 11:57:15PM -0300, Luis Machado wrote:
> > > > Yes, this specific address seems broken somehow. This is the first
> > > > _r_debug entry GDB gets:
> > > 
> > > Looks like the section offsets are not set yet.
> > > 
> > > > And this is the next _r_debug minimal symbol entry GDB gets:
> > > 
> > > What do you mean by "next"?  What commands did you use to get this
> > > output?
> > 
> > "Next" as in the entry GDB locates in the next time it calls
> > elf_locate_base(...), this time solib_create_inferior_hook(...) is in
> > the code path after post_create_inferior(...):
> > 
> > #0  elf_locate_base () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:494
> > #1  0x00000000100af30c in locate_base () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:570
> > #2  0x00000000100af9a4 in svr4_current_sos () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:760
> > #3  0x00000000100ad208 in update_solib_list (from_tty=0, target=0x108fd990) at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib.c:494
> > #4  0x00000000100ad630 in solib_add (pattern=0x0, from_tty=0, target=0x108fd990, readsyms=1)
> >     at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib.c:677
> > #5  0x00000000100b0058 in enable_break () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:989
> > #6  0x00000000100b0a94 in svr4_solib_create_inferior_hook () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:1408
> > #7  0x00000000100adc60 in solib_create_inferior_hook () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib.c:884
> > #8  0x00000000101973e8 in post_create_inferior (target=0x108fd990, from_tty=0) at /home/luis/src/gdb/gdb-head/HEAD3/gdb/infcmd.c:441
> > 
> > ... whereas the first time it was called:
> > 
> > #0  elf_locate_base () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:494
> > #1  0x00000000100af30c in locate_base () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:570
> > #2  0x00000000100af9a4 in svr4_current_sos () at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib-svr4.c:760
> > #3  0x00000000100ad208 in update_solib_list (from_tty=0, target=0x108fd990) at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib.c:494
> > #4  0x00000000100ad630 in solib_add (pattern=0x0, from_tty=0, target=0x108fd990, readsyms=1)
> >     at /home/luis/src/gdb/gdb-head/HEAD3/gdb/solib.c:677
> > #5  0x00000000101973e0 in post_create_inferior (target=0x108fd990, from_tty=0) at /home/luis/src/gdb/gdb-head/HEAD3/gdb/infcmd.c:433
> > 
> > 
> > > Also, with GDB 6.8 I can "continue" after this error.  With HEAD:
> > > 
> > > Continuing.
> > > Cannot execute this command while the selected thread is running.
> > > 
> > > Hey, Pedro?  Cleanup trouble?
> > 
> > Yes, i discussed this with Pedro yesterday and he's aware of the
> > problem.
> > 
> > Luis
> > 
>