Commit 62c1b42328832cc2ffe1bf4f10658738a192a192
1 parent
70f9dc9a
detect degenerate case of empty xref table
git-svn-id: svn+q:///qpdf/trunk@970 71b93d88-0707-0410-a8cf-f5a4172ac649
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5 additions
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1 deletions
libqpdf/QPDF.cc
| ... | ... | @@ -538,7 +538,11 @@ QPDF::read_xref(off_t xref_offset) |
| 538 | 538 | } |
| 539 | 539 | |
| 540 | 540 | int size = this->trailer.getKey("/Size").getIntValue(); |
| 541 | - int max_obj = (*(xref_table.rbegin())).first.obj; | |
| 541 | + int max_obj = 0; | |
| 542 | + if (! xref_table.empty()) | |
| 543 | + { | |
| 544 | + (*(xref_table.rbegin())).first.obj; | |
| 545 | + } | |
| 542 | 546 | if (! this->deleted_objects.empty()) |
| 543 | 547 | { |
| 544 | 548 | max_obj = std::max(max_obj, *(this->deleted_objects.rbegin())); | ... | ... |