simpleparse - what is wrong with my grammar?

[Laszlo Nagy]

The program below gives me "segmentation fault (core dumped)".

Environment:
   Linux gandalf-desktop 2.6.20-16-generic #2 SMP Tue Feb 12 05:41:34 
UTC 2008 i686 GNU/Linux
   Python 2.5.1

What is wrong with my grammar? Can it be an internal error in simpleparse?

Thanks,

   Laszlo


from simpleparse.common import numbers, strings, comments
from simpleparse.parser import Parser

declaration = r'''
expr            := paren_expr/unop_expr/binop_expr/word
paren_expr      := "(",expr,")"
unop_expr       := unop,expr
binop_expr      := expr,binop,expr
unop            := ("+"/"-")
binop           := ("|"/"&"/"@")
word            := [a-zA-Z], [a-zA-Z0-9_]*
'''

parser = Parser( declaration)
success, resultTrees, nextCharacter = 
parser.parse("testword",production="expr",processor=None)
print success