Re: [xml] Regular Expression Problem

[Daniel Veillard <veillard redhat com>]

On Wed, Feb 20, 2008 at 02:31:41PM +0530, Ashwin wrote:
>    Hi,
>
>    While  evaluating  an expression against the following pattern, libxml
>    is returning an internal error.
>
>    The Pattern is
>    -(conf:[a-zA-Z0-9.:_\-]+|conn:[a-zA-Z0-9.:_\-]+)/dialog:[a-zA-Z0-9.:_\
>    -]+
>
>    The expression is -conn:10600-0-3689-217.198.224.50.5060
>
>    While debugging I found that it fails in xmlFARegExecRollBack function
>    because of a rollback on an empty stack.... Is this a problem?

  Hum, unfortunately this looks like a different problem, it seems
to take a lot of cycles and I'm afraid there is something serious going
on and that can be only studied and fixed by debugging the generated
automata.
  reducing the expression and the input to provide a minimal automata
showing the problem is a good first step.

Daniel

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