[Cscope-devel] -L0 works but -L3 shows nothing

[Timur T. <ti...@ta...>]

I have a large project that has a somewhat quirky coding style (lots of 
questionable macros) and I'm trying to get cscope to give me a list of 
functions that call another function, X.

My understanding is that that is what the -L3 option is for.  However, 
when I run -L3 on any function of interest, cscope reports no results. 
-L0, however, does list everything.

So for now, my project parses the output of -L0 and attempts to ignore 
references that do not apply.  However, I don't understand why -L3 isn't 
working.  cscope is obviously able to parse the C code correctly.

Here's an example:

> $ cscope  -d   -L0 constructPwrChannel
> kernel/inc/pmgr/pwrchannel.h <global> 149 BoardObjConstruct constructPwrChannel;
> kernel/pmgr/nv/pwrchannel.c <global> 136 constructPwrChannel
> kernel/pmgr/nv/pwrchannel.c <global> 774 return constructPwrChannel(pGpu, ppBoardObj, size, pArgs);
> kernel/pmgr/nv/pwrchannel_pstate_est_lut.c <global> 57 status = constructPwrChannel(pGpu, ppBoardObj, size, pArgs);
> kernel/pmgr/nv/pwrchannel_sensor.c <global> 56 status = constructPwrChannel(pGpu, ppBoardObj, size, pArgs);
> kernel/pmgr/nv/pwrchannel_sum.c <global> 60 status = constructPwrChannel(pGpu, ppBoardObj, size, pArgs);

In this case, -L3 should return the last four lines, but I get nothing 
instead:

$ cscope  -vd   -L3 constructPwrChannel
> Search 7434 of 11098
$