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Modify QPDF::replaceReserved to allow replacing indirect nulls

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This commit is contained in:
m-holger 2023-08-25 12:37:24 +01:00
parent 6574dc5c03
commit 52539544c4
2 changed files with 6 additions and 3 deletions
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4
include/qpdf/QPDF.hh
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@ -391,8 +391,8 @@ class QPDF
void swapObjects(int objid1, int generation1, int objid2, int generation2);
// Replace a reserved object. This is a wrapper around replaceObject but it guarantees that the
// underlying object is a reserved object. After this call, reserved will be a reference to
// replacement.
// underlying object is a reserved object or a null object. After this call, reserved will
// be a reference to replacement.
QPDF_DLL
void replaceReserved(QPDFObjectHandle reserved, QPDFObjectHandle replacement);

5
libqpdf/QPDF.cc
View File

@ -1948,7 +1948,10 @@ void
QPDF::replaceReserved(QPDFObjectHandle reserved, QPDFObjectHandle replacement)
{
QTC::TC("qpdf", "QPDF replaceReserved");
reserved.assertReserved();
auto tc = reserved.getTypeCode();
if (!(tc == ::ot_reserved || tc == ::ot_null)) {
throw std::logic_error("replaceReserved called with non-reserverd object");
}
replaceObject(reserved.getObjGen(), replacement);
}