[Bug gdb/13669] Infinite recursion in cp_print_value_fields

["daniel.lopez999 at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=13669

--- Comment #12 from Daniel Lopez <daniel.lopez999 at gmail dot com> ---
I've got a reproducible example of this.

Compile attached "Daniel - test program" with
  g++ -std=c++0x -g main.cpp -omain

Start gdb
  gdb main

Put a breakpoint on line 53
  return ref;  // <-- stop here, then run 'finish'

Then run 'finish' as the comment says. After a second or so gdb segfaults.

An example of my stack trace is in "Daniel - debug session including
backtrace". It's stuck in the same two functions that Orgad mentioned.

I'm working with gdb 7.9 on Arch Linux, and 7.7 in an Ubuntu VM.

(Just as an aside, would anyone have an idea why in the Ubuntu VM this simply
causes gdb to exit back to the shell with "Segmentation fault (core dumped)"
and I can try again and so on, whereas on the Arch machine it hangs leaving the
gdb process in uninterruptible sleep state - preventing new gdb sessions from
running - and I can't figure out how to get rid of it except restarting the
machine?)

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