qpdf: A hangs close to ten minutes in qpdf

hi,I find something maybe wrong in the newest qpdf. the poc file will cause the program to be hanged about ten minutes. Maybe this is a bug or feature? poc.pdf

and I found that it maybe caused by the unparseObject in libqpdf/PDFWriter.cc,here are some backtrace:

#0  QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x25, flags=0x0) at libqpdf/QPDFWriter.cc:1182
#1  0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#2  0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#3  0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x24, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#4  0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#5  0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#6  0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x23, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#7  0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#8  0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#9  0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x22, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#10 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#11 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#12 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x21, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#13 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#14 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#15 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x20, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#16 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#17 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#18 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1f, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#19 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#20 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#21 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1e, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#22 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#23 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#24 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1d, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#25 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#26 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#27 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1c, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#28 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#29 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#30 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1b, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#31 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#32 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#33 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1a, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#34 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#35 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#36 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x19, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#37 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#38 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#39 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x18, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#40 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#41 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#42 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x17, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#43 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#44 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#45 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x16, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#46 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#47 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#48 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x15, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#49 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#50 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#51 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x14, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#52 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#53 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#54 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x13, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#55 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#56 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#57 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x12, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#58 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#59 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#60 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x11, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#61 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#62 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#63 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x10, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#64 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#65 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#66 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0xf, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#67 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#68 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#69 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0xe, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#70 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#71 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#72 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0xd, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#73 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#74 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#75 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0xc, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#76 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#77 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#78 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0xb, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#79 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#80 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#81 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0xa, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#82 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#83 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#84 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x9, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#85 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#86 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#87 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x8, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#88 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#89 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#90 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x7, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#91 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#92 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#93 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x6, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#94 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#95 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#96 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x5, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#97 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#98 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#99 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x4, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#100 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#101 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#102 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x3, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#103 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#104 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#105 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x2, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#106 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#107 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#108 0x00007ffff7a4dcf0 in QPDFWriter::unparseChild (this=0x7fffffffe070, child=..., level=0x1, flags=0x0) at libqpdf/QPDFWriter.cc:1195
#109 0x00007ffff7a62cf0 in QPDFWriter::unparseObject (this=0x7fffffffe070, object=..., level=<optimized out>, flags=0x0, stream_length=0x0,
    compress=0x0) at libqpdf/QPDFWriter.cc:1544
#110 0x00007ffff7a4e4cb in QPDFWriter::unparseObject (this=0x7ffff7fe8030, object=..., level=0x64edd0, flags=0xe799) at libqpdf/QPDFWriter.cc:1310
#111 0x00007ffff7a7b8b8 in QPDFWriter::writeObject (this=0x7fffffffe070, object=..., object_stream_index=<optimized out>)
    at libqpdf/QPDFWriter.cc:1967
#112 0x00007ffff7a90c17 in QPDFWriter::writeStandard (this=0x7fffffffe070) at libqpdf/QPDFWriter.cc:3397
#113 0x00007ffff7a8580f in QPDFWriter::write (this=0x7fffffffe070) at libqpdf/QPDFWriter.cc:2526
#114 0x0000000000412eb2 in write_outfile (pdf=..., o=...) at qpdf/qpdf.cc:2618
#115 main (argc=<optimized out>, argv=<optimized out>) at qpdf/qpdf.cc:2700
#116 0x00007ffff694ad20 in __libc_start_main () from /lib64/libc.so.6
#117 0x0000000000405ba9 in _start ()

Looking forward to you reply,thx : )

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 24 (11 by maintainers)

Most upvoted comments

@attritionorg @NicoleG25 You’ll notice that I almost always close issues with commits that fix them, and I think it’s a good practice. In this particular case, I was fixing a series of issues, and when I got to this one, it was no longer an issue. I don’t know which commit fixed it. Most likely it was similar to a different issue that was fixed by a nearby commit. Do a git log --oneline | grep '(fixes #

Also, I have been a debian developer for a long time and was frequently in the business of backporting security patches, so I definitely get what you are saying and fully appreciate this.

Obviously you fully understand the issue and the situation, as do I. This project is mostly a hobby for me though, and since anyone can do the git bisect to figure this out, I’m not inclined to spend my time doing it. But please understand it’s not because I don’t appreciate the value. It’s just because there are only so many hours in a day. 😃

Looking at the ChangeLog, from around June 13 until around June 22, 2019, I took time off work to do a full integration of qpdf with Google’s OSS-Fuzz. There are very large changes including some ABI changes, hence the next release being 9.0.0. During that week, I went through and fixed many issues found by fuzzers, and I also did a bit cleanup on integer type conversions. After fixing those issues, I rechecked other open issues of similar nature and was pleased to find that most were fixed. In this particular instance, I can say the fix was most likely one of the commits I did during that period, and I can also say that it would be difficult to backport the changes in isolation.

Hopefully this helps.

jberkenbilt on Apr 7, 2020