This changes the libstdc++ test suite to arrange for gdb to show the
full Python stack if any sort of Python exception occurs. This makes
debugging the printers a little simpler.
libstdc++-v3/ChangeLog:
* testsuite/lib/gdb-test.exp (gdb-test): Enable Python
stack traces from gdb.
puts $fd "set auto-load no"
# Now that we've disabled auto-load, it's safe to set the target file
puts $fd "file ./$output_file"
+ # See the full backtrace of any failures.
+ puts $fd "set python print-stack full"
# Load & register *our* copy of the pretty-printers
puts $fd "source $printer_code"
puts $fd "python register_libstdcxx_printers(None)"