Dear Axel and Rene
the class NaElem is one of the base classes of
quite large package (>20Mb it is modified version of Aliroot).
To produce compact example I stripped away lot of things,
but then it stopped to crash and produced normal documentation.
So the problem is its interaction with other classes, but they are
to many to post of roottalk.
But I found where exactly it crashes: in THtml::Class2Html(...)
it tries to takelogarithm of the TDataMember::GetMaxIndex() which
for some reasons returns negative value.
// Take in account the room the array index will occupy
...
len2 += Int_t(TMath::Log10(member->GetMaxIndex(indx))) +3;
The piece of THtml::Class2Html method which I put in the macro
(I attach it bellow) produced following result
member: const enum NaElem:: kBack dim = 0
member: const enum NaElem:: kFace dim = 0
member: const enum NaElem:: kDummy dim = 0
member: const enum NaElem:: kDisk dim = 0
member: const enum NaElem:: kBrik dim = 0
member: const enum NaElem:: kTube dim = 0
member: const enum NaElem:: kTubs dim = 0
member: const enum NaElem:: kCone dim = 0
member: const enum NaElem:: kTrap dim = 0
member: const enum NaElem:: kHexagon dim = 0
member: const enum NaElem:: kInit dim = 0
member: const enum NaElem:: kBldGeom dim = 0
member: const enum NaElem:: kCreGeom dim = 0
member: const enum NaElem:: kDisabled dim = 0
member: const char fgkDefMatName dim = 1
member->GetMaxIndex(indx) returns: -2147483648
*** Break *** floating point exception
Root > Function ttt() busy flag cleared
The member which produced an error is
protected:
static const char fgkDefMatName[];
It is initialized in .cxx as
const char NaElem::fgkDefMatName[]="AIR";
I hope this information will tell you sometinig.
The class definition is in the attached tar.gz
Best regards,
Ruben
// Extracted from THtml::Class2Html
{
// make a loop on data members
TClass* classPtr = NaElem::Class();
TDataMember *member;
TIter nextMember(classPtr->GetListOfDataMembers());
Int_t len1, len2, mtype, num[3];
len1 = len2 = mtype = num[0] = num[1] = num[2] = 0;
Int_t ndata = classPtr->GetNdata();
// if data member exist
if (ndata) {
TDataMember **memberArray = new TDataMember *[3 * ndata];
if (memberArray) {
while ((member = (TDataMember *) nextMember())) {
if (!strcmp(member->GetName(), "fgIsA")) continue;
memberArray[mtype * ndata + num[mtype]] = member;
if (kIsPrivate & member->Property())
mtype = 0;
else if (kIsProtected & member->Property())
mtype = 1;
else if (kIsPublic & member->Property())
mtype = 2;
if (member->GetFullTypeName()) {
len1 = strlen((char *) member->GetFullTypeName());
printf("member: %s ",member->GetFullTypeName());
}
else
len1 = 0;
if (member->GetName()) {
len2 = strlen(member->GetName());
printf("%s ",member->GetName());
}
else
len2 = 0;
if (kIsStatic & member->Property())
len1 += 7;
// Take in account the room the array index will occupy
Int_t dim = member->GetArrayDim();
printf("dim = %d\n",dim);
for (Int_t indx = 0; indx < dim; indx++) {
printf("member->GetMaxIndex(indx) returns: %d\n",
member->GetMaxIndex(indx));
// !!!
//!!!CRASHES HERE
len2 += Int_t(TMath::Log10(member->GetMaxIndex(indx))) + 3;
// !!!
}
}
delete[]memberArray;
}
}
// ...
}
On Tue, 29 Jan 2002, Axel Naumann wrote:
> Dear Ruben,
>
> I lost my cern afs access about 2 years ago. Could you please send me the
> class you're trying to document (source + header)? I'll try to find out what
> the problem is.
>
> Cheers, Axel.
>
On Tue, 29 Jan 2002, Rene Brun wrote:
> Ruben,
>
> Could you prepare a small tar file with all the *.h *.cxx files
necessary
> as well as a makefile such that I can build a shared lib to test your
problem.>
> Rene
>
> > -----Original Message-----
> > From: owner-roottalk@pcroot.cern.ch
> > [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Ruben Shahoian
> > Sent: Tuesday, January 29, 2002 3:18 AM
> > To: roottalk@cern.ch
> > Subject: [ROOT] floating point exception in gHtml.MakeClass
> >
> >
> > Hello,
> > I am trying to generate documentation for my class
> > (Root 3.02.07) but getting following error.
> > NaElem.h appeares in destination directory, but
> > NaElem.html seems to be truncated and without data
> > members. Does anybody know what can be the problem?
> >
> > Best regards,
> > Ruben Shahoian
> >
> > PS the source code NaElem.cxx/h is in
> > /afs/cern.ch/user/s/shahoian/public/naelem/
> >
> > ~/NA60 > na60root
> > *******************************************
> > * *
> > * W E L C O M E to R O O T *
> > * *
> > * Version 3.02/07 10 January 2002 *
> > * *
> > * You are welcome to visit our Web site *
> > * http://root.cern.ch *
> > * *
> > *******************************************
> >
> > Compiled for linux with thread support.
> >
> > CINT/ROOT C/C++ Interpreter version 5.15.25, Jan 6 2002
> > Type ? for help. Commands must be C++ statements.
> > Enclose multiple statements between { }.
> > root [0] gROOT.Reset();
> > root [1] new THtml();
> > root [2] gHtml.SetSourceDir("./STEER");
> > root [3] gHtml.MakeClass("NaElem");
> > /home/shahoian/NA60/html/NaElem.html
> >
> > *** Break *** floating point exception
> > Root >
> >
> >
> >
> >
>
>
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