SEGFAULT. Bug in interpreter?

[Rob W. W. Hooft]

I am running the current CVS version of python on a redhat 6.2 box and
see the following:

--------------------------------
no203[394]~%3% python x.py
zsh: segmentation fault  python x.py
no203[394]~%3% gdb =python
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This GDB was configured as "i386-redhat-linux"...
(gdb) run x.py
Starting program: /usr/local/nonius/bin/python x.py

Program received signal SIGSEGV, Segmentation fault.
PyErr_NormalizeException (exc=0xbffff73c, val=0xbffff740, tb=0xbffff744) at errors.c:166
166             if (PyClass_Check(type)) {
(gdb) where
#0  PyErr_NormalizeException (exc=0xbffff73c, val=0xbffff740, tb=0xbffff744) at errors.c:166
#1  0x8063931 in PyErr_PrintEx (set_sys_last_vars=1) at pythonrun.c:690
#2  0x8063906 in PyErr_Print () at pythonrun.c:680
#3  0x80636bb in PyRun_SimpleFile (fp=0x80f3ae8, filename=0xbffff9a1 "x.py") at pythonrun.c:585
#4  0x806338d in PyRun_AnyFile (fp=0x80f3ae8, filename=0xbffff9a1 "x.py") at pythonrun.c:463
#5  0x80513f7 in Py_Main (argc=2, argv=0xbffff824) at main.c:271
#6  0x8050f86 in main (argc=2, argv=0xbffff824) at python.c:10
(gdb) 
-----------------------------------------

On the script below. I have undressed it as much as possible, but
anything I change further in the "genkappa" routine changes the crash
into an error message either in "gentheta" or in "genkappa": 
SyntaxError: 'continue' not properly in loop (line 4)

---------------------------------------
def gentheta():
    while 1:
        try:
            continue
        finally:
            pass

def genkappa():
    if whatsmounted!='crystal':
        mountcrystal()
    while 1:
        if not inhibitmake:
            projtls.moveoutofway('kappa',dirok=1)
            os.mkdir('kappa')
        os.chdir('kappa')
        try:
            announce("Testing Kappa zero-point")
            # Use the detalign.vic produced by the dx calibration
            dal=os.path.join('..','dx','detalign.vic')
            if os.path.exists(dal):
                print "NOTE: Using detalign.vic from dx calibration"
                filecopy(dal,'detalign.vic')
            if not inhibitmake:
                status=os.system('calkappa make')
            else:
                status=os.system('calkappa')
            if status!=0:
                beeper.on()
                answer=command.question(root,'Calkappa Warnings',text='Calkappa issued some warnings and/or errors.\nPlease check what they are, and tell me what to do',
                                        strings=("Ignore them","Retry calkappa","Cancel and quit"))
                beeper.off()
                if answer==2:
                    cancel()
                if answer==1:
                    continue
            if os.path.exists('instruct.txt'):
                beeper.on()
                answer=command.fixedfontquestion(
                    root,'Kappa missetting needs correction',
                    text=open('instruct.txt').read(),
                    strings=("I have now done this","I'm ignoring this for now","Cancel and quit"))
                beeper.off()
                if answer==2:
                    cancel()
                if answer==1:
                    break
            else:
                # No instructions means no correction required
                break
        finally:
            os.chdir('..')