[xsl] Suggestion for handling an endless loop

Subject: [xsl] Suggestion for handling an endless loop
From: "Mark Giffin m1879@xxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 18 Oct 2019 21:06:21 -0000
I'm getting what appears to be an endless loop while running XSLT 2.0. It hangs when transforming a certain XML file, and I can watch the memory consumption rise to as much as 9 GB, and it apparently will never end. I have to force it to stop. When I change it back to XSLT 1.0, it runs fine, and when it hits the same file it hung up on with 2.0, it transforms in a second or two with 1.0. The XSLT does not use any 2.0 capabilities yet. The only change is changing 2.0 to 1.0 in <xsl:stylesheet version="2.0">.

I'm interested in methods to debug something like this. Where to look? I notice Oxygen has an XSLT profiler.

The XSLT is running under the DITA Open Toolkit version 3.3.2 (late model). I am converting an HTML-based publishing output from a much older version of the DITA OT, 1.8.5 (where the code worked). It looks like the 3.3.2 OT uses Saxon-HE-9.8.0-14.jar.


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