Comment why tidy-up parse cannot be suspended
Also add tags so that lcov can ignore the unreachable code.
@@ -1870,9 +1870,22 @@ XML_Parse(XML_Parser parser, const char *s, int len, int isFinal)
if (errorCode == XML_ERROR_NONE) {
switch (ps_parsing) {
case XML_SUSPENDED:
+ /* It is hard to be certain, but it seems that this case
+ * cannot occur. This code is cleaning up a previous parse
+ * with no new data (since len == 0). Changing the parsing
+ * state requires getting to execute a handler function, and
+ * there doesn't seem to be an opportunity for that while in
+ * this circumstance.
+ *
+ * Given the uncertainty, we retain the code but exclude it
+ * from coverage tests.
+ *
+ * LCOV_EXCL_START
+ */
XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position);
positionPtr = bufferPtr;
return XML_STATUS_SUSPENDED;
+ /* LCOV_EXCL_END */
case XML_INITIALIZED:
case XML_PARSING:
ps_parsing = XML_FINISHED;
