Fuzz introspector: round_trip_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
238 238 2 :

['LZ4_decompress_safe_partial_withPrefix64k', 'LZ4_decompress_safe_partial_withSmallPrefix']

238 238 LZ4_decompress_safe_partial_usingDict call site: 00076 /src/lz4/lib/lz4.c:2660
0 0 None 16 384 LZ4_compress_fast_extState call site: 00048 /src/lz4/lib/lz4.c:1362
0 0 None 0 0 LZ4_writeLE16 call site: 00000 /src/lz4/lib/./lz4.c:436
0 0 None 0 0 LZ4_NbCommonBytes call site: 00000 /src/lz4/lib/./lz4.c:564
0 0 None 0 0 LZ4_readLE16 call site: 00057 /src/lz4/lib/lz4.c:426
0 0 None 0 0 FUZZ_dataProducer_retrieve32 call site: 00003 /src/lz4/ossfuzz/fuzz_data_producer.c:23
0 0 None 0 0 FUZZ_getRange_from_uint32 call site: 00005 /src/lz4/ossfuzz/fuzz_data_producer.c:37

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 FUZZ_dataProducer_create [function] [call site] 00001
2 fprintf [call site] 00002
1 FUZZ_dataProducer_retrieve32 [function] [call site] 00003
1 FUZZ_dataProducer_remainingBytes [function] [call site] 00004
1 FUZZ_getRange_from_uint32 [function] [call site] 00005
1 LZ4_compressBound [function] [call site] 00006
1 fprintf [call site] 00007
1 fprintf [call site] 00008
1 fprintf [call site] 00009
1 LZ4_compress_default [function] [call site] 00010
2 LZ4_compress_fast [function] [call site] 00011
3 LZ4_compress_fast_extState [function] [call site] 00012
4 LZ4_initStream [function] [call site] 00013
5 LZ4_stream_t_alignment [function] [call site] 00014
4 __assert_fail [call site] 00015
4 LZ4_compressBound [function] [call site] 00016
4 __assert_fail [call site] 00017
4 __assert_fail [call site] 00018
4 LZ4_read_ARCH [function] [call site] 00019
4 LZ4_isLittleEndian [function] [call site] 00020
4 __assert_fail [call site] 00021
4 __assert_fail [call site] 00022
4 LZ4_read_ARCH [function] [call site] 00023
4 LZ4_getPositionOnHash [function] [call site] 00024
5 __assert_fail [call site] 00025
4 LZ4_read_ARCH [function] [call site] 00026
4 __assert_fail [call site] 00027
4 __assert_fail [call site] 00028
4 __assert_fail [call site] 00029
4 LZ4_read_ARCH [function] [call site] 00030
4 __assert_fail [call site] 00031
4 LZ4_read_ARCH [function] [call site] 00032
4 LZ4_read_ARCH [function] [call site] 00033
4 LZ4_read_ARCH [function] [call site] 00034
4 LZ4_read_ARCH [function] [call site] 00035
4 __assert_fail [call site] 00036
4 LZ4_read_ARCH [function] [call site] 00037
4 __assert_fail [call site] 00038
4 __assert_fail [call site] 00039
4 LZ4_read_ARCH [function] [call site] 00040
4 LZ4_getPositionOnHash [function] [call site] 00041
4 LZ4_read_ARCH [function] [call site] 00042
4 __assert_fail [call site] 00043
4 LZ4_read_ARCH [function] [call site] 00044
4 __assert_fail [call site] 00045
4 __assert_fail [call site] 00046
4 __assert_fail [call site] 00047
4 LZ4_read_ARCH [function] [call site] 00048
4 __assert_fail [call site] 00049
4 __assert_fail [call site] 00050
4 __assert_fail [call site] 00051
1 fprintf [call site] 00052
1 LZ4_decompress_safe [function] [call site] 00053
2 __assert_fail [call site] 00054
2 __assert_fail [call site] 00055
2 LZ4_readLE16 [function] [call site] 00056
3 LZ4_isLittleEndian [function] [call site] 00057
3 LZ4_read16 [function] [call site] 00058
2 __assert_fail [call site] 00059
2 __assert_fail [call site] 00060
2 __assert_fail [call site] 00061
2 LZ4_write32 [function] [call site] 00062
2 __assert_fail [call site] 00063
2 __assert_fail [call site] 00064
1 fprintf [call site] 00065
1 memcmp [call site] 00066
1 fprintf [call site] 00067
1 LZ4_decompress_safe_partial [function] [call site] 00068
2 __assert_fail [call site] 00069
2 LZ4_readLE16 [function] [call site] 00070
1 fprintf [call site] 00071
1 fprintf [call site] 00072
1 memcmp [call site] 00073
1 fprintf [call site] 00074
1 LZ4_decompress_safe_partial_usingDict [function] [call site] 00075
2 LZ4_decompress_safe_partial [function] [call site] 00076
2 LZ4_decompress_safe_partial_withPrefix64k [function] [call site] 00077
3 __assert_fail [call site] 00078
3 LZ4_readLE16 [function] [call site] 00079
2 __assert_fail [call site] 00080
2 LZ4_decompress_safe_partial_withSmallPrefix [function] [call site] 00081
3 __assert_fail [call site] 00082
3 LZ4_readLE16 [function] [call site] 00083
2 __assert_fail [call site] 00084
2 LZ4_decompress_safe_partial_forceExtDict [function] [call site] 00085
3 __assert_fail [call site] 00086
3 LZ4_readLE16 [function] [call site] 00087
1 fprintf [call site] 00088
1 fprintf [call site] 00089
1 memcmp [call site] 00090
1 fprintf [call site] 00091
1 LZ4_decompress_safe_partial_usingDict [function] [call site] 00092
1 fprintf [call site] 00093
1 fprintf [call site] 00094
1 memcmp [call site] 00095
1 fprintf [call site] 00096
1 LZ4_decompress_safe_partial_usingDict [function] [call site] 00097
1 fprintf [call site] 00098
1 fprintf [call site] 00099
1 memcmp [call site] 00100
1 fprintf [call site] 00101
1 LZ4_decompress_safe_partial_usingDict [function] [call site] 00102
1 fprintf [call site] 00103
1 fprintf [call site] 00104
1 memcmp [call site] 00105
1 fprintf [call site] 00106
1 LZ4_decompress_safe_partial_usingDict [function] [call site] 00107
1 fprintf [call site] 00108
1 fprintf [call site] 00109
1 memcmp [call site] 00110
1 FUZZ_dataProducer_free [function] [call site] 00111