Bug#602668: libdevel-bt-perl: FTBFS on armel

[Niko Tyni]

severity 602668 important
clone 602668 -1
retitle -1 gdb: 7.2 falsely (?) shows stack corruption on armel
reassign -1 gdb 7.2-1
block 602668 with -1
thanks

On Sat, Nov 06, 2010 at 11:15:01PM +0000, Hector Oron wrote:
> Package: libdevel-bt-perl
> Version: 0.05-1
> Severity: serious

It's never built on armel yet, so downgrading.

> t/basic.t             (Wstat: 1280 Tests: 5 Failed: 5)
>   Failed tests:  1-5

This is because gdb thinks the stack gets corrupted somewhere between
perl_run() and Perl_runops_standard():

  abel% gdb perl
  GNU gdb (GDB) 7.2-debian
  [...]
  Reading symbols from /usr/bin/perl...(no debugging symbols found)...done.
  (gdb) br perl_run
  Breakpoint 1 at 0x898c
  (gdb) br Perl_runops_standard
  Function "Perl_runops_standard" not defined.
  Make breakpoint pending on future shared library load? (y or [n]) y
  
  Breakpoint 2 (Perl_runops_standard) pending.
  (gdb) run -e 1
  Starting program: /usr/bin/perl -e 1
  [Thread debugging using libthread_db enabled]
  
  Breakpoint 1, 0x400740c4 in perl_run () from /usr/lib/libperl.so.5.10
  (gdb) bt
  #0  0x400740c4 in perl_run () from /usr/lib/libperl.so.5.10
  #1  0x00008b9c in main ()
  (gdb) c
  Continuing.
  
  Breakpoint 2, 0x400cead4 in Perl_runops_standard () from /usr/lib/libperl.so.5.10
  (gdb) bt
  #0  0x400cead4 in Perl_runops_standard () from /usr/lib/libperl.so.5.10
  #1  0x400743f4 in perl_run () from /usr/lib/libperl.so.5.10
  #2  0x00011008 in ?? ()
  Cannot access memory at address 0x0
  #3  0x00011008 in ?? ()
  Cannot access memory at address 0x0
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)
  (gdb) 
  
This seems to be a regression in gdb itself: 7.2-1 from sid shows the
above stack corruption, 7.0.1-2 from squeeze doesn't with the same perl
binary. (I tested this on abel by copying /usr/bin/gdb from the sid
chroot to my home directory and running it in the squeeze one.)

Cloning, reassigning and blocking.
-- 
Niko Tyni   ntyni at debian.org