Fuzz introspector: round_trip_stream_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 54 1 :

['LZ4_loadDictHC']

0 1214 LZ4_compressHC_continue_generic call site: 00000 /src/lz4/lib/lz4hc.c:1744
0 12 1 :

['LZ4_initStreamHC']

0 15 LZ4_resetStreamHC_fast call site: 00071 /src/lz4/lib/lz4hc.c:1648
0 6 3 :

['LZ4_read32', 'LZ4_isLittleEndian', 'LZ4_read_ARCH']

0 6 LZ4_loadDict_internal call site: 00000 /src/lz4/lib/lz4.c:1632
0 0 None 24 84 LZ4_XXH32 call site: 00012 /src/lz4/lib/xxhash.c:411
0 0 None 0 1185 LZ4_compress_HC_continue call site: 00000 /src/lz4/lib/lz4hc.c:1774
0 0 None 0 276 LZ4HC_compress_optimal call site: 00000 /src/lz4/lib/lz4hc.c:2025
0 0 None 0 0 LZ4_attach_dictionary call site: 00000 /src/lz4/lib/lz4.c:1675
0 0 None 0 0 LZ4_writeLE16 call site: 00000 /src/lz4/lib/./lz4.c:454
0 0 None 0 0 LZ4_NbCommonBytes call site: 00000 /src/lz4/lib/./lz4.c:584
0 0 None 0 0 LZ4_readLE16 call site: 00000 /src/lz4/lib/lz4.c:432
0 0 None 0 0 LZ4MID_compress call site: 00000 /src/lz4/lib/lz4hc.c:714
0 0 None 0 0 LZ4MID_compress call site: 00000 /src/lz4/lib/lz4hc.c:743

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 FUZZ_seed [function] [call site] 00001
2 LZ4_XXH32 [function] [call site] 00002
3 XXH_isLittleEndian [function] [call site] 00003
3 XXH_read32 [function] [call site] 00004
3 XXH_swap32 [function] [call site] 00005
3 XXH32_round [function] [call site] 00006
3 XXH_read32 [function] [call site] 00007
3 XXH_swap32 [function] [call site] 00008
3 XXH_read32 [function] [call site] 00009
3 XXH_swap32 [function] [call site] 00010
3 XXH_read32 [function] [call site] 00011
3 XXH_swap32 [function] [call site] 00012
3 XXH32_finalize [function] [call site] 00013
4 XXH_read32 [function] [call site] 00014
4 XXH_swap32 [function] [call site] 00015
4 XXH_read32 [function] [call site] 00016
4 XXH_swap32 [function] [call site] 00017
4 XXH_read32 [function] [call site] 00018
4 XXH_swap32 [function] [call site] 00019
4 XXH32_avalanche [function] [call site] 00020
4 XXH_read32 [function] [call site] 00021
4 XXH_swap32 [function] [call site] 00022
4 XXH_read32 [function] [call site] 00023
4 XXH_swap32 [function] [call site] 00024
4 XXH_read32 [function] [call site] 00025
4 XXH_swap32 [function] [call site] 00026
4 XXH32_avalanche [function] [call site] 00027
4 XXH_read32 [function] [call site] 00028
4 XXH_swap32 [function] [call site] 00029
4 XXH_read32 [function] [call site] 00030
4 XXH_swap32 [function] [call site] 00031
4 XXH_read32 [function] [call site] 00032
4 XXH_swap32 [function] [call site] 00033
4 XXH32_avalanche [function] [call site] 00034
4 XXH_read32 [function] [call site] 00035
4 XXH_swap32 [function] [call site] 00036
4 XXH_read32 [function] [call site] 00037
4 XXH_swap32 [function] [call site] 00038
4 XXH_read32 [function] [call site] 00039
4 XXH_swap32 [function] [call site] 00040
4 XXH32_avalanche [function] [call site] 00041
4 __assert_fail [call site] 00042
3 XXH32_round [function] [call site] 00043
3 XXH32_finalize [function] [call site] 00044
1 state_create [function] [call site] 00045
2 LZ4_compressBound [function] [call site] 00046
2 cursor_create [function] [call site] 00047
3 fprintf [call site] 00048
3 abort [call site] 00049
2 cursor_create [function] [call site] 00050
2 LZ4_createStream [function] [call site] 00051
3 LZ4_initStream [function] [call site] 00052
4 LZ4_stream_t_alignment [function] [call site] 00053
4 LZ4_isAligned [function] [call site] 00054
2 fprintf [call site] 00055
2 abort [call site] 00056
2 LZ4_createStreamHC [function] [call site] 00057
3 calloc [call site] 00058
3 LZ4_setCompressionLevel [function] [call site] 00059
2 fprintf [call site] 00060
2 abort [call site] 00061
2 LZ4_createStreamDecode [function] [call site] 00062
3 calloc [call site] 00063
2 fprintf [call site] 00064
2 abort [call site] 00065
1 state_reset [function] [call site] 00066
2 FUZZ_rand32 [function] [call site] 00067
3 FUZZ_rand [function] [call site] 00068
2 LZ4_resetStream_fast [function] [call site] 00069
3 __assert_fail [call site] 00070
2 LZ4_resetStreamHC_fast [function] [call site] 00071
3 LZ4_initStreamHC [function] [call site] 00072
4 LZ4_streamHC_t_alignment [function] [call site] 00073
4 LZ4_isAligned [function] [call site] 00074
4 LZ4_setCompressionLevel [function] [call site] 00075
3 __assert_fail [call site] 00076
3 LZ4_setCompressionLevel [function] [call site] 00077
2 LZ4_setStreamDecode [function] [call site] 00078
3 __assert_fail [call site] 00079
1 state_checkRoundTrip [function] [call site] 00080
2 fprintf [call site] 00081
2 abort [call site] 00082
2 memcmp [call site] 00083
2 fprintf [call site] 00084
2 abort [call site] 00085
1 state_free [function] [call site] 00086
2 cursor_free [function] [call site] 00087
2 cursor_free [function] [call site] 00088
2 LZ4_freeStream [function] [call site] 00089
2 LZ4_freeStreamHC [function] [call site] 00090
2 LZ4_freeStreamDecode [function] [call site] 00091