Re: [Valgrind-users] mash_LD_PRELOAD error test case

[Crispin F. <val...@fl...>]

Hi,

> Well, you haven't zeroed all your environment variables, but you have
> zeroed LD_PRELOAD and LD_LIBRARY_PATH, which Valgrind currently requires
> to be non-zeroed.  Maybe if either of them are zeroed it should just skip
> the mash_ stuff...

As far as I can tell from that function it is just trying to remove its
entries from the environment. It would probably make more sense for it
to try and remove anything that is still around, and not complain if the
application has removed the variables. If I get a chance I will have a
look at getting it to remove anything that is still in the env that is
valgrind related.

> If this is causing problems for you (ie. you're not just playing
> let's-try-to-confuse-Valgrind :) change the first line of code in
> coregrind/vg_main.c:VG_(mash_LD_PRELOAD_and_LD_LIBRARY_PATH)() from this:
> 
>    if (ld_preload_str == NULL || ld_library_path_str == NULL) MUTANCY(0);
> 
> to this:
> 
>    if (ld_preload_str == NULL || ld_library_path_str == NULL) return;

Thanks, this fixes the running of CGI scripts under our Web Server
(Zeus).

Crispin