Did that.  Well, technically, I replaced two lines with the equivalent:
% CFLAGS='-O0 -g3' ./configure

I do see this in the Makefile:
    CONFIGURE_CFLAGS=       -O0 -g3
so, I didn't screw it up!


The test still failed:

=====================================================================
FAIL: test_wrapper_call (test.test_gdb.PyBtTests)
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Traceback (most recent call last):
  File "/home/larry/src/python/buildtrunk/Lib/test/test_gdb.py", line 947, in test_wrapper_call
    self.assertRegex(gdb_output,
AssertionError: Regex didn't match: "<method-wrapper u?'__init__' of MyList object at " not found in 'Breakpoint 1 at 0x281f5a: file Python/bltinmodule.c, line 1207.\n[Thread debugging using libthread_db enabled]\nUsing host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".\n\nBreakpoint 1, builtin_id (self=<cfunction_enter_call+35>, v=<unknown at remote 0x7fffffffc7b0>) at Python/bltinmodule.c:1207\n1207\t{\nBreakpoint 2: file Objects/descrobject.c, line 1386.\n\nBreakpoint 2, wrapper_call (wp=<unknown at remote 0x555555973820>, args=<unknown at remote 0x55555581dee8>, kwds=<unknown at remote 0x5555555bde85>) at Objects/descrobject.c:1386\n1386\t{\nTraceback (most recent call first):\n  <unknown at remote 0x555555973820>\n  File "<string>", line 4, in __init__\n  File "<string>", line 7, in <module>\n'

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