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

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
19 11 Compress::new call site: 00011 tests::decode_multi_writer
15 31 BufReader::with_buf call site: 00031 MultiGzDecoder::new
12 59 Crc::update call site: 00059 tests::decode_multi_writer
5 3 GzBuilder::new call site: 00003 GzBuilder::write
5 53 GzHeaderParser::new call site: 00053 CrcWriter::write
5 76 GzBuilder::into_header call site: 00076 GzEncoder::finish
5 104 Writer::take_inner call site: 00104 GzDecoder::new
3 96 GzEncoder::try_finish call site: 00096 CrcWriter::write
2 0 EP call site: 00000 GzEncoder::new
2 49 Inflate::make call site: 00049
1 9 Crc::new call site: 00009 Compress::new
1 84 GzEncoder::write_header call site: 00084

Fuzzer calltree

0 fuzz_target [function] [call site] 00000
1 GzEncoder::new [function] [call site] 00001
2 GzBuilder::new [function] [call site] 00002
3 Compression::default [function] [call site] 00003
4 Compression [function] [call site] 00004
2 GzBuilder::write [function] [call site] 00005
3 write::gz_encoder [function] [call site] 00006
4 zio::Writer::new [function] [call site] 00007
5 Crc::new [function] [call site] 00008
6 Compression::default [function] [call site] 00009
4 Compress::new [function] [call site] 00010
5 Deflate::make [function] [call site] 00011
6 Compression::default [function] [call site] 00012
7 Compression [function] [call site] 00013
6 format_from_bool [function] [call site] 00014
6 R::set_format_and_level [function] [call site] 00015
6 Compression::level [function] [call site] 00016
6 u32::try_into [function] [call site] 00017
6 unwrap_or [function] [call site] 00018
4 Crc::new [function] [call site] 00019
3 GzBuilder::into_header [function] [call site] 00020
4 extend [function] [call site] 00021
4 len [function] [call site] 00022
4 to_le_bytes [function] [call site] 00023
4 extend [function] [call site] 00024
4 extend [function] [call site] 00025
4 Option::as_bytes_with_nul [function] [call site] 00026
4 tests::decode_multi_writer [function] [call site] 00027
5 GzEncoder::new [function] [call site] 00028
5 BufReader::new [function] [call site] 00029
6 BufReader::with_buf [function] [call site] 00030
7 BufReader::into_boxed_slice [function] [call site] 00031
5 Compression::default [function] [call site] 00032
6 Compression [function] [call site] 00033
5 write_all [function] [call site] 00034
5 as_ref [function] [call site] 00035
5 unwrap [function] [call site] 00036
5 finish [function] [call site] 00037
5 (u32, [call site] 00038
5 repeat [function] [call site] 00039
5 BufReader::new [function] [call site] 00040
5 MultiGzDecoder::new [function] [call site] 00041
6 GzDecoder::new [function] [call site] 00042
7 zio::Writer::new [function] [call site] 00043
7 CrcWriter::new [function] [call site] 00044
8 Crc::new [function] [call site] 00045
7 Decompress::new [function] [call site] 00046
8 Inflate::make [function] [call site] 00047
9 format_from_bool [function] [call site] 00048
9 InflateState::new_boxed [function] [call site] 00049
7 Vec::with_capacity [function] [call site] 00050
7 GzHeaderParser::new [function] [call site] 00051
8 GzHeaderState::Start [function] [call site] 00052
8 Compression::default [function] [call site] 00053
9 Compression [function] [call site] 00054
5 impl [call site] 00055
5 CrcWriter::write [function] [call site] 00056
6 CrcWriter::write [function] [call site] 00057
6 Crc::update [function] [call site] 00058
7 Crc::update [function] [call site] 00059
6 Ok [function] [call site] 00060
5 io::Result::unwrap [function] [call site] 00061
5 finish [function] [call site] 00062
5 (u32, [call site] 00063
5 String::from_utf8 [function] [call site] 00064
5 expect [function] [call site] 00065
5 repeat [function] [call site] 00066
4 copied [function] [call site] 00067
4 extend [function] [call site] 00068
4 Option::as_bytes_with_nul [function] [call site] 00069
4 tests::decode_multi_writer [function] [call site] 00070
4 copied [function] [call site] 00071
4 Compression::best [function] [call site] 00072
5 Compression [function] [call site] 00073
4 Compression::fast [function] [call site] 00074
5 Compression [function] [call site] 00075
4 u8::unwrap_or [function] [call site] 00076
1 BufReader::new [function] [call site] 00077
1 Compression::default [function] [call site] 00078
1 GzEncoder::write_all [function] [call site] 00079
1 unwrap [function] [call site] 00080
1 GzEncoder::finish [function] [call site] 00081
2 GzEncoder::try_finish [function] [call site] 00082
3 GzEncoder::write_header [function] [call site] 00083
4 tests::new_is_empty [function] [call site] 00084
5 Crc::new [function] [call site] 00085
4 BufReader::get_mut [function] [call site] 00086
4 CrcWriter::write [function] [call site] 00087
4 drain [function] [call site] 00088
4 Ok [function] [call site] 00089
3 finish [function] [call site] 00090
3 Crc::sum [function] [call site] 00091
4 Crc::sum [function] [call site] 00092
3 Crc::amount [function] [call site] 00093
4 Crc::amount [function] [call site] 00094
3 BufReader::get_mut [function] [call site] 00095
3 CrcWriter::write [function] [call site] 00096
4 CrcWriter::write [function] [call site] 00097
4 Crc::update [function] [call site] 00098
4 Ok [function] [call site] 00099
3 Ok [function] [call site] 00100
2 Ok [function] [call site] 00101
2 Writer::take_inner [function] [call site] 00102
3 take [function] [call site] 00103
3 unwrap [function] [call site] 00104
1 io::Result::unwrap [function] [call site] 00105
1 GzDecoder::new [function] [call site] 00106
1 BufReader::new [function] [call site] 00107
1 read_to_end [function] [call site] 00108
1 unwrap [function] [call site] 00109