[Bug c++/69323] New: Segmentation fault when instantiating class template with inner class which declares itself as a friend

["bd at jollyrogerlabs dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69323

            Bug ID: 69323
           Summary: Segmentation fault when instantiating class template
                    with inner class which declares itself as a friend
           Product: gcc
           Version: 4.6.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bd at jollyrogerlabs dot com
  Target Milestone: ---

Created attachment 37379
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37379&action=edit
Preprocessed file, generated by adding "-save-temps" immediately after "g++" on
the command line.

Playing around with some template tricks (thus the filename) and produced a
segmentation fault.  Additionally, the error was generated from a program that
was very similar to one already working correctly, to which I attempted to have
an inner class of a class template (actually struct in both cases but whatever)
make a static member function private and then declare itself as its own
friend.  So in addition to the preprocessed source generated with -save-temps,
I will attach the original source file with instructions on how to switch the
error on and off.

Finally, I will report this on Ubuntu launchpad as well and reference this
upstream bug ID in case this turns out to be some issue in how they are
packaging for release.



GCC version:
$ g++ --version
g++ (Ubuntu/Linaro 4.6.4-1ubuntu1~12.04) 4.6.4



System type:
Ubuntu 12.04 LTS 64 bit
$ uname -a
Linux apocalypse-ranch-office 3.5.0-54-generic #81~precise1-Ubuntu SMP Tue Jul
15 04:02:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/debian_version 
wheezy/sid



Compiler command line plus output:
$ g++ -Wall -std=c++0x -g -O0 -o /tmp/stupid_template_tricks
/tmp/stupid_template_tricks.cpp 
/tmp/stupid_template_tricks.cpp: In instantiation of
âOuter<42>::StupidValueTrickâ:
/tmp/stupid_template_tricks.cpp:62:13:   instantiated from here
/tmp/stupid_template_tricks.cpp:13:3: internal compiler error: Segmentation
fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccO1MHdE.out file, please attach this to
your bugreport.