Re: Error: No memory for static ...

Hi Roger,

Handling of static variable is one of the current weakness in CINT. To work around the problem simply use this alternative ordering of the code: (or use ACLiC).

void read_tree_minimal()
{

   static Double_t energy;

   TFile *f = new TFile("Ca1Mn47d.lowsanidined.20080506.135053.root");    return;
}

Cheers,
Philippe.

Roger Mason wrote:
> Hello,
>
> I'm trying to write a macro to read in values from a TTree in a root
> file. The following minimal example fails:
>
> #include "TFile.h"
> #include "TTree.h"
> #include "TBrowser.h"
> #include "TH2.h"
> #include "TRandom.h"
> #include "TCanvas.h"
>
> void read_tree_minimal()
> {
>
> TFile *f = new TFile("Ca1Mn47d.lowsanidined.20080506.135053.root");
> static Double_t energy;
> return;
> }
>
> root [0] .x read_tree_minimal.C
> Error: No memory for static energy\23b\0 read_tree_minimal.C:12:
>
> The same macro compiles without error:
>
> root [1] .x read_tree_minimal.C++
> Info in <ACLiC>: script has already been loaded in interpreted mode
> Info in <ACLiC>: unloading /home/rmason/test/root/./read_tree_minimal.C and compiling it
> Info in <TUnixSystem::ACLiC>: creating shared library /home/rmason/test/root/./read_tree_minimal_C.so
> /home/rmason/test/root/./read_tree_minimal.C: In function 'void read_tree_minimal()':
> /home/rmason/test/root/./read_tree_minimal.C:11: warning: unused variable 'f'
> /home/rmason/test/root/./read_tree_minimal.C:12: warning: unused variable 'energy'
>
> Perhaps someone would be kind enough to point out what is wrong.
>
> Thanks,
> Roger
>
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Received on Fri Oct 03 2008 - 19:36:25 CEST