Restore context size and position after XPATH_OP_ARG

Fixes a bug with predicates:
https://mail.gnome.org/archives/xml/2014-March/msg00014.html

1 files changed, 11 insertions, 8 deletions

diff --git a/xpath.c b/xpath.c
index 89eaba87..dc41ce6b 100644
--- a/xpath.c
+++ b/xpath.c
@@ -13594,17 +13594,20 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
 	    bak = ctxt->context->node;
 	    pp = ctxt->context->proximityPosition;
 	    cs = ctxt->context->contextSize;
-            if (op->ch1 != -1)
+            if (op->ch1 != -1) {
                 total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
-	    ctxt->context->contextSize = cs;
-	    ctxt->context->proximityPosition = pp;
-	    ctxt->context->node = bak;
-	    ctxt->context->doc = bakd;
-	    CHECK_ERROR0;
+                ctxt->context->contextSize = cs;
+                ctxt->context->proximityPosition = pp;
+                ctxt->context->node = bak;
+                ctxt->context->doc = bakd;
+	        CHECK_ERROR0;
+            }
             if (op->ch2 != -1) {
                 total += xmlXPathCompOpEval(ctxt, &comp->steps[op->ch2]);
-	        ctxt->context->doc = bakd;
-	        ctxt->context->node = bak;
+                ctxt->context->contextSize = cs;
+                ctxt->context->proximityPosition = pp;
+                ctxt->context->node = bak;
+                ctxt->context->doc = bakd;
 	        CHECK_ERROR0;
 	    }
             return (total);