Fuzz introspector: future_hex_fuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
0 0 None 0 0 Pl_ASCIIHexDecoder::Pl_ASCIIHexDecoder(charconst*,Pipeline*) call site: 00000 /src/qpdf/libqpdf/Pl_ASCIIHexDecoder.cc:12
0 0 None 0 0 Pl_ASCIIHexDecoder::write(unsignedcharconst*,unsignedlong) call site: 00000 /src/qpdf/libqpdf/Pl_ASCIIHexDecoder.cc:20

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 FuzzHelper::FuzzHelper(unsigned char const*, unsigned long) [function] [call site] 00001
1 FuzzHelper::run() [function] [call site] 00002
2 FuzzHelper::doChecks() [function] [call site] 00003
3 Pl_Discard::Pl_Discard() [function] [call site] 00004
4 Pipeline::Pipeline(char const*, Pipeline*) [function] [call site] 00005
3 Pl_ASCIIHexDecoder::Pl_ASCIIHexDecoder(char const*, Pipeline*) [function] [call site] 00006
4 Pipeline::Pipeline(char const*, Pipeline*) [function] [call site] 00007
4 __cxa_allocate_exception [call site] 00008
4 std::logic_error::logic_error(char const*) [call site] 00009
4 __cxa_throw [call site] 00010
4 __cxa_free_exception [call site] 00011
4 Pipeline::~Pipeline() [function] [call site] 00012
3 Pl_ASCIIHexDecoder::write(unsigned char const*, unsigned long) [function] [call site] 00013
4 toupper [call site] 00014
4 QTC::TC(char const*, char const*, int) [function] [call site] 00015
4 Pl_ASCIIHexDecoder::flush() [function] [call site] 00016
5 QTC::TC(char const*, char const*, int) [function] [call site] 00017
5 QTC::TC(char const*, char const*, int) [function] [call site] 00018
5 Pipeline::next() const [function] [call site] 00019
4 Pl_ASCIIHexDecoder::flush() [function] [call site] 00020
4 __cxa_allocate_exception [call site] 00021
4 std::runtime_error::runtime_error(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) [call site] 00022
4 __cxa_throw [call site] 00023
4 __cxa_free_exception [call site] 00024
3 Pl_ASCIIHexDecoder::finish() [function] [call site] 00025
4 Pl_ASCIIHexDecoder::flush() [function] [call site] 00026
4 Pipeline::next() const [function] [call site] 00027
3 Pl_ASCIIHexDecoder::~Pl_ASCIIHexDecoder() [function] [call site] 00028
4 Pipeline::~Pipeline() [function] [call site] 00029
3 Pl_Discard::~Pl_Discard() [function] [call site] 00030
4 Pipeline::~Pipeline() [function] [call site] 00031
2 __cxa_begin_catch [call site] 00032
2 __cxa_end_catch [call site] 00033
2 __clang_call_terminate [call site] 00034
3 __cxa_begin_catch [call site] 00035