[Bug 773712] Re: Cannot compile CERN's program ROOT

[VolkerH]

I had the same problem when compiling our own code using the ROOT
libraries (Ubuntu 11.04 64bit, gcc version 4.5.2 (Ubuntu/Linaro
4.5.2-8ubuntu4)). The attached preprocessed source file contains kind of
a minimum version to reproduce the code.

The error occurs when compiling this file with
g++ -g -O2 -c Minimum_cpp.cc
but not with
g++ -g -O -c Minimum_cpp.cc

This happens at a few places. all have in common, that they deal with a
object of class A, which had been derived from the ROOT class TObject
and which is stored in an container as TObject* and a dynamic_cast to A*
is done afterwards. The internal compiler error is reported when this
cast is done in connection with an iterator of the container, like

A* obj;
while( (A = dynamic_cast<A*>( next() ) ) { ... }

If the cast and the iterator are seperated, compilation runs through:

A* obj;
TObject* tmp;
while ( (tmp = next() ) { obj = dynamic_cast<A*>(tmp); ... }


** Attachment added: "Preprocessed code to reproduce the problem."
   https://bugs.launchpad.net/ubuntu/+source/gcc-4.5/+bug/773712/+attachment/2359813/+files/Minimum_cpp.cc

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https://bugs.launchpad.net/bugs/773712

Title:
   Cannot compile CERN's program ROOT

Status in “gcc-4.5” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: gcc-4.5

  Dear Community,

  While attempting to install CERN's ROOT program[1], the program failed
  to full compile with an output indicating the crash is g++-related.
  Symbolic links were made with the suggestion of Ref 2.

  
  [1] ROOT source package
  http://root.cern.ch/drupal/content/production-version-528
  Installation instructions:
  http://root.cern.ch/drupal/content/installing-root-source

  [2] http://www.quantumdiaries.org/2011/04/29/new-ubuntu-linux-11-04/

  My history (pretty straightforward):
  cd ./Desktop/
  gzip -dc root_v5.28.00c.source.tar.gz | tar -xf -
  cd ./root/
  ./configure linuxx8664gcc
  make
  root
  root -l
  sudo make
  ./configure linuxx8664gcc
  make
  history

  Last lines of my terminal output (First attempt):
  g++ -O2 -pipe -m64 -Wshadow -Wall -W -Woverloaded-virtual -fPIC -Iinclude  -pthread -o proof/proof/src/TDataSetManager.o -c /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx
  /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx: In member function ‘virtual void TDataSetManager::MonitorUsedSpace(TVirtualMonitoringWriter*)’:
  /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx:708:1: internal compiler error: in redirect_jump, at jump.c:1443
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <file:///usr/share/doc/gcc-4.5/README.Bugs> for instructions.
  make: *** [proof/proof/src/TDataSetManager.o] Error 1

  Last lines of my terminal output (Second attempt):
  ==> lib/libCore.so done
  bin/rmkdepend -R -fproof/proof/src/TDataSetManager.d -Y -w 1000 -- -pipe -m64 -Wshadow -Wall -W -Woverloaded-virtual -fPIC -Iinclude  -pthread -D__cplusplus -- /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx
  g++ -O2 -pipe -m64 -Wshadow -Wall -W -Woverloaded-virtual -fPIC -Iinclude  -pthread -o proof/proof/src/TDataSetManager.o -c /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx
  /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx: In member function ‘virtual void TDataSetManager::MonitorUsedSpace(TVirtualMonitoringWriter*)’:
  /home/richard/Desktop/root/proof/proof/src/TDataSetManager.cxx:708:1: internal compiler error: in redirect_jump, at jump.c:1443
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <file:///usr/share/doc/gcc-4.5/README.Bugs> for instructions.
  make: *** [proof/proof/src/TDataSetManager.o] Error 1

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