diff options
Diffstat (limited to 'libqpdf/QPDF.cc')
| -rw-r--r-- | libqpdf/QPDF.cc | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libqpdf/QPDF.cc b/libqpdf/QPDF.cc index 846f188f..ecc13491 100644 --- a/libqpdf/QPDF.cc +++ b/libqpdf/QPDF.cc @@ -1471,6 +1471,21 @@ QPDF::resolve(int objid, int generation) // to insert things into the object cache that don't actually // exist in the file. QPDFObjGen og(objid, generation); + if (this->resolving.count(og)) + { + // This can happen if an object references itself directly or + // indirectly in some key that has to be resolved during + // object parsing, such as stream length. + QTC::TC("qpdf", "QPDF recursion loop in resolve"); + warn(QPDFExc(qpdf_e_damaged_pdf, this->file->getName(), + "", this->file->getLastOffset(), + "loop detected resolving object " + + QUtil::int_to_string(objid) + " " + + QUtil::int_to_string(generation))); + return new QPDF_Null; + } + ResolveRecorder rr(this, og); + if (! this->obj_cache.count(og)) { if (! this->xref_table.count(og)) |