[Pkg-tcltk-devel] Bug#488684: Bug#488684: Bug#488684: tcl8.5: testsuite failures in db and db4.6 packages due to tclsh8.5 (GNU/kFreeBSD)

[miguel sofer]

Something is *very* wrong in that stack trace; it definitely looks like stack 
corruption.

The evidence is that TclEvalObjvInternal is called with objc=3 (frame 7), and it 
then calls Tcl_LoadObjCmd with objc=0. But objc is passed untouched by 
TclEvalObjvInternal.

Petr Salinger wrote:
>> Threaded tclsh8.5 segfaults on exit after loading any shared library
>> using [load] command. In your case it was libdb_tcl-4.6.so (Tcl
>> interface to BDB).
>>
>> Unfortunately, it seems that the stack is corrupted during the crash,
>> so GDB isn't informative. It gives something like the following (and
>> never shows the symbols):
>> Both GNU/Linux and FreeBSD work fine. So, it seems to be a problem
>> with working with threads using glibc and kfreebsd. It seems to me that
>> Tcl developers don't use so unusual environment, but I'll ask them
>> anyway.
> 
> Thanks for the hint.
> 
> I added "--enable-symbols" to debian/rules, build package and
> 
>   cd unix
>   ln -sf libtcl8.5.so libtcl8.5.so.0
>   LD_LIBRARY_PATH=${PWD} ./tclsh ../tests/load.test
>   gdb tclsh tclsh.core
> 
> The output of gdb is attached (from kfreebsd-amd64).
> 
> Unfortunately, I do not speak tcl, so I cannot reduce testcase
> or see what is wrong.
> 
> GNU/kFreeBSD uses same kernel as FreeBSD and
> glibc as linux, but it still uses linuxthreads (not NPTL).
> But linuxthreads is still used on hppa, please could you (as DD)
> test whether it does have same problem ?
> 
> Testsuite in db is on hppa disabled, so a problem with "load" would not
> lead to FTBFS of db/db4.6 on hppa.
> 
> Thanks for your care about GNU/kFreeBSD.
> 
> Petr
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Pkg-tcltk-devel mailing list
> Pkg-tcltk-devel at lists.alioth.debian.org
> http://lists.alioth.debian.org/mailman/listinfo/pkg-tcltk-devel