ptl compilation problems

This happens with quixote 2.1 and 2.3, under python 2.3 (but not python 2.4):

% cat t.py
import quixote
quixote.enable_ptl()
import bug

% cat bug.ptl
def g():
  f(lambda: None)[1:]

% python2.3 t.py
Traceback (most recent call last): -------
t.py:3 in ?()
        import bug
/home/elaforge/lib/python/quixote/ptl/ptl_import.py:120 in
cModuleImporter.find_import_module(fullname='bug', subname='bug',
path=None)
        return self.loader.load_module(fullname, stuff)
/home/elaforge/lib/python/quixote/ptl/ptl_import.py:100 in
PTLLoader.load_module(name='bug', stuff=(<open file '/..)
        return _load_ptl(name, filename, file)
/home/elaforge/lib/python/quixote/ptl/ptl_import.py:71 in
_load_ptl(name='bug', filename='/home/elaforg.., file=<open file
'/h..)
        code = compile_template(file, filename, output)
/home/elaforge/lib/python/quixote/ptl/ptl_compile.py:226 in
compile_template(input=<open file '/h.., filename='/home/elaforg..,
output=<closed file '..)
        template.compile()
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/pycodegen.py:112
in Template.compile(display=0)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/pycodegen.py:1149
in ModuleCodeGenerator.__init__(tree=Module(None, S..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:106
in walk(tree=Module(None, S.., visitor=<compiler.pyco..,
walker=<compiler.visi.., verbose=None)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:63
in ASTVisitor.preorder(tree=Module(None, S..,
visitor=<compiler.pyco.., *args=())
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Module(None, S.., *args=())
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/pycodegen.py:342
in ModuleCodeGenerator.visitModule(node=Module(None, S..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/pycodegen.py:255
in ModuleCodeGenerator.parseSymbols(tree=Module(None, S..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:106
in walk(tree=Module(None, S.., visitor=<compiler.symb..,
walker=<compiler.visi.., verbose=None)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:63
in ASTVisitor.preorder(tree=Module(None, S..,
visitor=<compiler.symb.., *args=())
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Module(None, S.., *args=())
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/symbols.py:207
in SymbolVisitor.visitModule(node=Module(None, S..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Stmt([From('__.., *args=(<ModuleScope:..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:40
in ASTVisitor.default(node=Stmt([From('__.., *args=(<ModuleScope:..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Function('g', .., *args=(<ModuleScope:..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/symbols.py:220
in SymbolVisitor.visitFunction(node=Function('g', ..,
parent=<ModuleScope: ..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Stmt([Discard(.., *args=(<FunctionScop..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:40
in ASTVisitor.default(node=Stmt([Discard(.., *args=(<FunctionScop..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Discard(Slice(.., *args=(<FunctionScop..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:40
in ASTVisitor.default(node=Discard(Slice(.., *args=(<FunctionScop..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Slice(CallFunc.., *args=(<FunctionScop..)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/symbols.py:329
in SymbolVisitor.visitSlice(node=Slice(CallFunc(Name('f'), [Lambda((),
(), 0, Name('None'))], None, None), 'OP_APPLY', Const(1), None),
scope=<FunctionScope: g>, assign=0)
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=CallFunc(Name('f'), [Lambda((), (), 0,
Name('None'))], None, None), *args=(<FunctionScope: g>, 0))
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:40
in ASTVisitor.default(node=CallFunc(Name('f'), [Lambda((), (), 0,
Name('None'))], None, None), *args=(<FunctionScope: g>, 0))
/var/tmp/python2.3-2.3.5-root/usr/lib/python2.3/compiler/visitor.py:57
in ASTVisitor.dispatch(node=Lambda((), (), 0, Name('None')),
*args=(<FunctionScope: g>, 0))
TypeError: visitLambda() takes exactly 3 arguments (4 given)


The original code that triggered this error is of course more
complicated, but the above was the simplest example I was able to
reduce it to.  I don't really understand why it winds up in a module
in /var/tmp (not using zip imports or anything) but I think that's
unrelated to the problem.

visitLambda wants (self, node, parent), and it looks like that extra 0
comes from visitSlice.  I don't understand enough about how the
compiler stuff works to know immediately what this means.  Maybe a
slice should not have a lambda as a subnode and that is the problem?

In any case, it's gone in 2.4, so maybe it is a 2.3 bug?