Runtime NPTL detection (was: Re: [Valgrind-users] vg_ldt.c:167 (vgPlain_do_useseg): Assertion `(seg_selector & 7) == 7' failed.)

[Olly B. <ol...@su...>]

On Thu, Oct 16, 2003 at 11:37:49PM +0100, Tom Hughes wrote:
> So using this line in the valgrind shell script in place of the current
> solution should fix things:
> 
>   getconf GNU_LIBPTHREAD_VERSION | grep -qi NPTL 2> /dev/null && \
>       LD_ASSUME_KERNEL=2.4.1
> 
> Note that you only need to go back to 2.4.1 and not 2.2.5 as it does
> at the moment - as shown by this on an RH9 box:
> 
>   audi [~] % LD_ASSUME_KERNEL=2.4.1 getconf GNU_LIBPTHREAD_VERSION
>   linuxthreads-0.10

Better still!  I've made a patch based on this (attached), and tested it
with valgrind-20031012 on a non-NPTL box.  I don't have an NPTL box
handy I'm afraid.

Incidentally, memcheck/tests/badrw.c seems to be missing from CVS on the
VALGRIND_2_0_REALLY branch (so "make check" fails), while on HEAD
memcheck/tests/filter_mismatches seems to be missing (so "make" fails).

Cheers,
    Olly