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
35 11 Compress::new call site: 00011 tests::decode_multi_writer
20 53 GzHeaderParser::new call site: 00053 tests::decode_multi_writer
15 114 BufReader::consume call site: 00114 read_into
10 103 Compress::total_in call site: 00103
6 78 GzBuilder::into_header call site: 00078 GzEncoder::finish
6 88 GzEncoder::write_header call site: 00088 BufReader::fill_buf
5 3 GzBuilder::new call site: 00003 GzBuilder::write
5 144 Writer::take_inner call site: 00144 GzDecoder::new
2 0 EP call site: 00000 GzEncoder::new
2 49 Inflate::make call site: 00049
2 96 BufReader::fill_buf call site: 00096
2 140 GzEncoder::try_finish call site: 00140

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 u16::try_from [function] [call site] 00022
4 len [function] [call site] 00023
4 expect [function] [call site] 00024
4 to_le_bytes [function] [call site] 00025
4 extend [function] [call site] 00026
4 extend [function] [call site] 00027
4 Option::as_bytes_with_nul [function] [call site] 00028
4 tests::decode_multi_writer [function] [call site] 00029
5 GzEncoder::new [function] [call site] 00030
5 AlwaysZeroThenError::new [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 AlwaysZeroThenError::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 AlwaysZeroThenError::write [function] [call site] 00056
6 tests::new_is_empty [function] [call site] 00057
7 Crc::new [function] [call site] 00058
6 Ok [function] [call site] 00059
6 Err [function] [call site] 00060
6 io::Error::new [function] [call site] 00061
6 Ok [function] [call site] 00062
5 io::Result::unwrap [function] [call site] 00063
5 finish [function] [call site] 00064
5 (u32, [call site] 00065
5 String::from_utf8 [function] [call site] 00066
5 expect [function] [call site] 00067
5 repeat [function] [call site] 00068
4 copied [function] [call site] 00069
4 extend [function] [call site] 00070
4 Option::as_bytes_with_nul [function] [call site] 00071
4 tests::decode_multi_writer [function] [call site] 00072
4 copied [function] [call site] 00073
4 Compression::best [function] [call site] 00074
5 Compression [function] [call site] 00075
4 Compression::fast [function] [call site] 00076
5 Compression [function] [call site] 00077
4 u8::unwrap_or [function] [call site] 00078
1 AlwaysZeroThenError::new [function] [call site] 00079
1 Compression::default [function] [call site] 00080
1 GzEncoder::write_all [function] [call site] 00081
1 unwrap [function] [call site] 00082
1 GzEncoder::finish [function] [call site] 00083
2 GzEncoder::try_finish [function] [call site] 00084
3 GzEncoder::write_header [function] [call site] 00085
4 tests::new_is_empty [function] [call site] 00086
5 Crc::new [function] [call site] 00087
4 write_nonzero [function] [call site] 00088
5 AlwaysZeroThenError::write [function] [call site] 00089
5 tests::new_is_empty [function] [call site] 00090
5 Err [function] [call site] 00091
5 read_into [function] [call site] 00092
6 read [function] [call site] 00093
7 BufReader::fill_buf [function] [call site] 00094
8 read [function] [call site] 00095
8 Ok [function] [call site] 00096
7 tests::new_is_empty [function] [call site] 00097
7 Compress::total_out [function] [call site] 00098
8 Compress::total_out [function] [call site] 00099
9 Compress::total_out [function] [call site] 00100
7 Compress::total_in [function] [call site] 00101
8 Compress::total_in [function] [call site] 00102
9 Compress::total_in [function] [call site] 00103
7 D::Flush::finish [function] [call site] 00104
7 D::Flush::none [function] [call site] 00105
8 Compression [function] [call site] 00106
7 Compress::run [function] [call site] 00107
8 Compress::compress [function] [call site] 00108
9 Compress::compress [function] [call site] 00109
10 Compress::compress [function] [call site] 00110
7 Compress::total_out [function] [call site] 00111
7 Compress::total_in [function] [call site] 00112
7 BufReader::consume [function] [call site] 00113
8 cmp::min [function] [call site] 00114
7 tests::new_is_empty [function] [call site] 00115
8 Crc::new [function] [call site] 00116
7 tests::new_is_empty [function] [call site] 00117
7 Err [function] [call site] 00118
7 io::Error::new [function] [call site] 00119
7 Ok [function] [call site] 00120
7 Err [function] [call site] 00121
7 io::Error::new [function] [call site] 00122
6 Err [function] [call site] 00123
6 read_into [function] [call site] 00124
6 Ok [function] [call site] 00125
6 kind [function] [call site] 00126
6 Ok [function] [call site] 00127
6 Err [function] [call site] 00128
5 Ok [function] [call site] 00129
4 BufReader::get_mut [function] [call site] 00130
4 drain [function] [call site] 00131
4 Ok [function] [call site] 00132
3 finish [function] [call site] 00133
3 Crc::sum [function] [call site] 00134
4 Crc::sum [function] [call site] 00135
3 Crc::amount [function] [call site] 00136
4 Crc::amount [function] [call site] 00137
3 BufReader::get_mut [function] [call site] 00138
3 write_nonzero [function] [call site] 00139
3 Ok [function] [call site] 00140
2 Ok [function] [call site] 00141
2 Writer::take_inner [function] [call site] 00142
3 take [function] [call site] 00143
3 unwrap [function] [call site] 00144
1 io::Result::unwrap [function] [call site] 00145
1 GzDecoder::new [function] [call site] 00146
1 AlwaysZeroThenError::new [function] [call site] 00147
1 read_to_end [function] [call site] 00148
1 unwrap [function] [call site] 00149