CINT array limitation

ROOT
1

Hi,

I seemed to be hitting a CINT limitation with arrays that I can’t figure out how to slove (see example below).

If I reduce the dimension of acc by one (remove [NMC] for eg) then it compiles just fine.

How do I get around this ?

Thanks
Anyes

//test.C
{
static const int NGEN=3;
static const int NTL=4;
static const int NJB=8;
static const int NMC=10;

void dum(int D[NGEN][NTL][NMC],int acc[NGEN][NTL][NJB][NMC]){

}

}

.L test.C+g
Info in <TUnixSystem::ACLiC>: creating shared library /Users/anyes/MyWork/Analysis/Code/myMacro/Xs/./test_C.so
Cint internal error ary parameter dimension :0:
Warning: Error occurred during dictionary source generation
!!!Removing /Users/anyes/MyWork/Analysis/Code/myMacro/Xs/./tmp_0_LV5wJy.cxx /Users/anyes/MyWork/Analysis/Code/myMacro/Xs/./tmp_0_LV5wJy.h !!!
Error: rootcint: error loading headers...
Error in <ACLiC>: Dictionary generation failed!
Info in <ACLiC>: Invoking compiler to check macro's validity
/Users/anyes/MyWork/Analysis/Code/myMacro/Xs/./test.C:7: warning: unused parameter 'D'
/Users/anyes/MyWork/Analysis/Code/myMacro/Xs/./test.C:7: warning: unused parameter 'acc'
Info in <ACLiC>: The compiler has not found any problem with your macro.
        Probably your macro uses something rootcint can't parse.
        Check [root.cern.ch/root/Cint.phtml?limitations](http://root.cern.ch/root/Cint.phtml?limitations) for Cint's limitations.
2

Hi,

Cint can only handle <=3 dimensional arrays as function parameters. You can cast your array to e.g. a int*, define dum(int*, int*), and cast it back within dum.

We will try to remove this limitation during the coming months.

Cheers, Axel.

3

Did you plan to remove this limitation? Seems it is still valid in 2012. Thanks in advance.

4

Try the “typedef” trick: Multidimensional Array

5

Indeed, it looks fine. However, it would be better if it is not needed to use that trick (if there is no array limitation) :smiley:

6

Well, I’m sure that this problem has been “fixed” in the ROOT trunk. O:)
CINT has been removed completely (in ROOT 6). :mrgreen: