This applies to release version 1.0.4. I have built it in Microsoft Visual 
Studio, but I think the bug applies to all versions.

When running xsltproc with --repeat, the app crashes.

I have examined the code, and it appears that the second application of a 
stylesheet is failing because it has cached pointers into the original 
source document. Of course, the original source document is destroyed so 
those cache pointers are pointing to garbage.

It seems as if the call to xsltCleanupTemplates(style) should clean up 
this cache information, but it is not. The actual crash occurs in 
pattern.c, line 571. Here is the context (>>> identifies the offending 
line):

		if ((select != NULL) &&
		    (select->op == XSLT_OP_ELEM) &&
		    (select->value != NULL) &&
		    (node->type == XML_ELEMENT_NODE) &&
		    (node->parent != NULL)) {

		    if ((select->previous != NULL) &&
>>>>>>>>>		(select->previous->parent == node->parent)) {
			/*
			 * just walk back to adjust the index
			 */
			int indx = 0;
			xmlNodePtr sibling = node;

The select->previous pointer is bad (non-NULL, invalid). In the first call 
to xsltApplyStylesheet(...), select->previous is NULL, whereas in the 
second call (at the same point of traversal) it is NOT null, so it appears 
that the value is not being cleaned up from the previous call.

I believe the way to fix this is to add cleanup code to 
xsltCleanupTemplates(), specifically to clean up all of the cached values 
in all of the xsltCompMatchPtr members in the stylesheet structure.