diff options
Diffstat (limited to 'libqpdf/QPDFObjectHandle.cc')
| -rw-r--r-- | libqpdf/QPDFObjectHandle.cc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libqpdf/QPDFObjectHandle.cc b/libqpdf/QPDFObjectHandle.cc index 687ba439..cd3084cb 100644 --- a/libqpdf/QPDFObjectHandle.cc +++ b/libqpdf/QPDFObjectHandle.cc @@ -1089,6 +1089,16 @@ QPDFObjectHandle::parseInternal(PointerHolder<InputSource> input, QPDFObjectHandle QPDFObjectHandle::newIndirect(QPDF* qpdf, int objid, int generation) { + if (objid == 0) + { + // Special case: QPDF uses objid 0 as a sentinel for direct + // objects, and the PDF specification doesn't allow for object + // 0. Treat indirect references to object 0 as null so that we + // never create an indirect object with objid 0. + QTC::TC("qpdf", "QPDFObjectHandle indirect with 0 objid"); + return newNull(); + } + return QPDFObjectHandle(qpdf, objid, generation); } |