diff options
| -rw-r--r-- | src/pugixml.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/pugixml.cpp b/src/pugixml.cpp index b0e0078..5e09aca 100644 --- a/src/pugixml.cpp +++ b/src/pugixml.cpp @@ -6186,7 +6186,12 @@ namespace pugi // document node always has an offset of 0 if (_root == &doc) return 0; - return _root->contents && (_root->header & impl::xml_memory_page_contents_allocated_or_shared_mask) == 0 ? _root->contents - doc.buffer : -1; + // we need contents to be inside buffer and not shared + // if it's shared we don't know if this is the original node + if (!_root->contents) return -1; + if (_root->header & impl::xml_memory_page_contents_allocated_or_shared_mask) return -1; + + return _root->contents - doc.buffer; } #ifdef __BORLANDC__ |