[ROOT] unsafe bit in TKey::ReadObj

From: Jiri Masik (masik@fzu.cz)
Date: Thu Dec 05 2002 - 16:02:42 MET 

Hi,

I'm trying to read an object from file, its class is unknown to Root.
gROOT->FindObject("name") gets a segfault in TKey::ReadObj because of
invalid pointer tobj (line 504). It points to a nonallocated memory as
for my class the base class offset evaluates to -1. Are the comments
in the file valid i.e. it is unsupported and I need to inherit the
base class from TObject to be able to read it? My class inherits from
TNamed only. Maybe a warning could be printed in TKey::ReadObj and the
rest of the code protected against this condition.

cheers,
Jiri

It is with CVS head, Debian/linux/ppc.

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