[Libreoffice] Array index at -1

Norbert Thiebaud nthiebaud at gmail.com
Sun Oct 24 01:43:34 PDT 2010

On Sun, Oct 24, 2010 at 3:15 AM, julien <serval2412 at yahoo.fr> wrote:
> Hi,
> I'm running cppcheck (1.45 from sourceforge since the testing package on
> Debian repository is the 1.44 version) the whole project.
> And i found these points :
> [./build/libreoffice-]:
> (error) Array index -1 is out of bounds
> =>
> epg = &cp->csp[-1];
> [./build/libreoffice-]:
> (error) Array index -1 is out of bounds
> =>
> for (epg = &cp->csp[-1]; epg >= cp->sp; epg--) {
> Are these bugs false positive or just typos ? I never saw an index to -1 but
> i don't know at all C++.

1/ the report is in berkleydb, which is an external library.
So either it is a false positive, or the problem need to be reported
upstream to the berkley db project.

2/ a cursory look at the code lead me to the conculsion that
a/ -1 is hard coded there, and it is used as such in many places in
that source file. It is unlikely a typo or a un-intended pre-compiler
b/ csp sound like 'current stack pointer' to me... and -1 would make
sens for that kind of object.

So I'd say this is most likely a false positive.


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