diff options
Diffstat (limited to 'libqpdf')
| -rw-r--r-- | libqpdf/QPDF.cc | 7 | ||||
| -rw-r--r-- | libqpdf/QPDFWriter.cc | 4 |
2 files changed, 11 insertions, 0 deletions
diff --git a/libqpdf/QPDF.cc b/libqpdf/QPDF.cc index fc0c103f..d1360b14 100644 --- a/libqpdf/QPDF.cc +++ b/libqpdf/QPDF.cc @@ -917,6 +917,13 @@ QPDF::processXRefStream(qpdf_offset_t xref_offset, QPDFObjectHandle& xref_obj) } entry_size += W[i]; } + if (entry_size == 0) + { + throw QPDFExc(qpdf_e_damaged_pdf, this->file->getName(), + "xref stream", xref_offset, + "Cross-reference stream's /W indicates" + " entry size of 0"); + } long long max_num_entries = static_cast<unsigned long long>(-1) / entry_size; diff --git a/libqpdf/QPDFWriter.cc b/libqpdf/QPDFWriter.cc index 8ee322af..8d5f0682 100644 --- a/libqpdf/QPDFWriter.cc +++ b/libqpdf/QPDFWriter.cc @@ -2056,6 +2056,10 @@ QPDFWriter::generateObjectStreams() std::vector<QPDFObjGen> const& eligible = QPDF::Writer::getCompressibleObjGens(this->pdf); unsigned int n_object_streams = (eligible.size() + 99) / 100; + if (n_object_streams == 0) + { + throw std::logic_error("n_object_streams == 0"); + } unsigned int n_per = eligible.size() / n_object_streams; if (n_per * n_object_streams < eligible.size()) { |