> Is there any trick that one could think of to still be able to read
> these files
> while using recent versions of root/rootcint? Or perhaps my diagnosis is
> totally wrong?
A priori, just ignoring the warning should do the trick. Besides the
warning do you have any other reason to believe that the file are not read
properly?
In the current implementation, the streaming and un-streaming of STL
container does not go through the TClass or the dictionary for that STL
containers and I thought that we removed that warning for those cases
already (but it looks like we didn't :(). Could please send me (or more
exactly tell me where to find) the file you produced with 3.03.09.
Thanks,
Philippe.
---------- Forwarded message ----------
Date: Sun, 11 May 2003 17:17:09 +0200
From: Aart Heijboer <aart.heijboer@nikhef.nl>
To: roottalk@pcroot.cern.ch
Subject: [ROOT] Problem reading files with __malloc_alloc_template<0>
i.s.o. allocator<X>
Dear ROOTers,
I am trying to read some old files, containing classes with STL
containers,
on a new system with a new root version (details below). It seems
that there are problems with the dictionary information which have to
do with the allocators used in STL containers.
When opening a file (written with v3.03.09), warnings are given like:
Warning in <TClass::TClass>: no dictionary for class
vector<SPE_Hit,__malloc_alloc_template<0> > is available
(where SPE_Hit is some class of mine)
I have understood that recently the dictionary generator (and/or gcc)
has
changed to use 'allocator<X>' as the allocator for STL containers of X,
in stead of the previously used '__malloc_alloc_template<0>'.
This , I think, explains why no information for
vector<SPE_HIT,__malloc_alloc...etc>
is availble in my newly compiled library with dictionary information.
Is there any trick that one could think of to still be able to read
these files
while using recent versions of root/rootcint? Or perhaps my diagnosis is
totally wrong?
[one thing I tried is to use everywhere __malloc_alloc_template<0> in
the
class definitions... that works, but it breaks a lot of other codes,
since these
codes use the type vector<X> (which defaults to vector<X, allocator<X>>
now)
and this cannot be converted to/from vector<X,
__malloc_alloc_template<0> >.]
Any help would be greatly appreciated,
Thanks,
Aart.
files written with
redhat 6.2
gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
ROOT version 3.03/09
trying to read with
gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-113)
ROOT Version 3.05/05
--
::Aart Heijboer,
::NIKHEF, Nat. Inst. for Nuclear and High Energy Physics
::Phone: +31 20 592 2073
::aart.heijboer@nikhef.nl
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