--- expat-1.95.8/lib/xmltok_impl.c.cve3720
+++ expat-1.95.8/lib/xmltok_impl.c
@@ -1741,7 +1741,7 @@ PREFIX(updatePosition)(const ENCODING *e
const char *end,
POSITION *pos)
{
- while (ptr != end) {
+ while (ptr < end) {
switch (BYTE_TYPE(enc, ptr)) {
#define LEAD_CASE(n) \
case BT_LEAD ## n: \