Fuzz introspector: compress_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
0 485 2 :

['tdefl_get_adler32', 'tdefl_compress']

0 485 mz_deflate call site: 00034 /src/miniz/build/amalgamation/miniz.c:282
0 271 1 :

['tdefl_compress_block']

0 271 tdefl_flush_block call site: 00018 /src/miniz/build/amalgamation/miniz.c:1330
0 0 None 0 812 tdefl_compress call site: 00014 /src/miniz/build/amalgamation/miniz.c:1949
0 0 None 0 198 mz_inflate call site: 00043 /src/miniz/build/amalgamation/miniz.c:467
0 0 None 0 5 tdefl_compress call site: 00032 /src/miniz/build/amalgamation/miniz.c:1975
0 0 None 0 4 mz_compress2 call site: 00013 /src/miniz/build/amalgamation/miniz.c:339
0 0 None 0 3 tinfl_decompress call site: 00044 /src/miniz/build/amalgamation/miniz.c:2485
0 0 None 0 0 tdefl_compress call site: 00014 /src/miniz/build/amalgamation/miniz.c:1920
0 0 None 0 0 tdefl_compress call site: 00014 /src/miniz/build/amalgamation/miniz.c:1938
0 0 None 0 0 tdefl_compress call site: 00016 /src/miniz/build/amalgamation/miniz.c:1963
0 0 None 0 0 tdefl_compress call site: 00032 /src/miniz/build/amalgamation/miniz.c:1972
0 0 None 0 0 tdefl_create_comp_flags_from_zip_params call site: 00009 /src/miniz/build/amalgamation/miniz.c:2122

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 mz_compressBound [function] [call site] 00001
2 mz_deflateBound [function] [call site] 00002
1 calloc [call site] 00003
1 calloc [call site] 00004
1 check_compress_level [function] [call site] 00005
2 mz_compress2 [function] [call site] 00006
3 mz_deflateInit [function] [call site] 00007
4 mz_deflateInit2 [function] [call site] 00008
5 tdefl_create_comp_flags_from_zip_params [function] [call site] 00009
5 miniz_def_alloc_func [function] [call site] 00010
5 miniz_def_free_func [function] [call site] 00011
5 tdefl_init [function] [call site] 00012
3 mz_deflate [function] [call site] 00013
4 tdefl_compress [function] [call site] 00014
5 tdefl_flush_output_buffer [function] [call site] 00015
5 tdefl_compress_normal [function] [call site] 00016
6 tdefl_flush_block [function] [call site] 00017
7 tdefl_compress_block [function] [call site] 00018
8 tdefl_start_static_block [function] [call site] 00019
9 tdefl_optimize_huffman_table [function] [call site] 00020
10 tdefl_radix_sort_syms [function] [call site] 00021
10 tdefl_calculate_minimum_redundancy [function] [call site] 00022
10 tdefl_huffman_enforce_max_code_size [function] [call site] 00023
9 tdefl_optimize_huffman_table [function] [call site] 00024
8 tdefl_start_dynamic_block [function] [call site] 00025
9 tdefl_optimize_huffman_table [function] [call site] 00026
9 tdefl_optimize_huffman_table [function] [call site] 00027
9 tdefl_optimize_huffman_table [function] [call site] 00028
8 tdefl_compress_lz_codes [function] [call site] 00029
7 tdefl_compress_block [function] [call site] 00030
5 mz_adler32 [function] [call site] 00031
5 tdefl_flush_block [function] [call site] 00032
5 tdefl_flush_output_buffer [function] [call site] 00033
4 tdefl_get_adler32 [function] [call site] 00034
3 mz_deflateEnd [function] [call site] 00035
3 mz_deflateEnd [function] [call site] 00036
2 mz_uncompress [function] [call site] 00037
3 mz_uncompress2 [function] [call site] 00038
4 mz_inflateInit [function] [call site] 00039
5 mz_inflateInit2 [function] [call site] 00040
6 miniz_def_alloc_func [function] [call site] 00041
6 miniz_def_free_func [function] [call site] 00042
4 mz_inflate [function] [call site] 00043
5 tinfl_decompress [function] [call site] 00044
6 tinfl_clear_tree [function] [call site] 00045
5 tinfl_decompress [function] [call site] 00046
4 mz_inflateEnd [function] [call site] 00047
4 mz_inflateEnd [function] [call site] 00048
2 __assert_fail [call site] 00049
2 memcmp [call site] 00050
1 check_compress_level [function] [call site] 00051
1 check_compress_level [function] [call site] 00052
1 check_compress_level [function] [call site] 00053
1 check_decompress [function] [call site] 00054
2 write_zlib_header [function] [call site] 00055
2 mz_uncompress [function] [call site] 00056