Fuzz introspector: fuzz_dname_to_str
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
10 12 2 :

['knot_wire_get_pointer', 'knot_wire_is_pointer']

10 12 knot_dname_wire_check call site: 00002 /src/knot-dns/src/libknot/dname.c:97
0 0 None 4 8 knot_dname_to_str call site: 00014 /src/knot-dns/src/libknot/dname.c:274
0 0 None 4 8 knot_dname_to_str call site: 00015 /src/knot-dns/src/libknot/dname.c:292
0 0 None 0 0 knot_dname_wire_check call site: 00001 /src/knot-dns/src/libknot/dname.c:79
0 0 None 0 0 knot_dname_to_str call site: 00009 /src/knot-dns/src/libknot/dname.c:224
0 0 None 0 0 knot_dname_to_str call site: 00010 /src/knot-dns/src/libknot/dname.c:232
0 0 None 0 0 knot_dname_to_str call site: 00010 /src/knot-dns/src/libknot/dname.c:237
0 0 None 0 0 knot_dname_to_str call site: 00010 /src/knot-dns/src/libknot/dname.c:253
0 0 None 0 0 knot_dname_to_str call site: 00013 /src/knot-dns/src/libknot/dname.c:264
0 0 None 0 0 knot_dname_to_str call site: 00014 /src/knot-dns/src/libknot/dname.c:275
0 0 None 0 0 knot_dname_to_str call site: 00015 /src/knot-dns/src/libknot/dname.c:293
0 0 None 0 0 knot_dname_to_str call site: 00017 /src/knot-dns/src/libknot/dname.c:309

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 knot_dname_wire_check [function] [call site] 00001
2 knot_wire_is_pointer [function] [call site] 00002
2 knot_wire_get_pointer [function] [call site] 00003
3 knot_wire_is_pointer [function] [call site] 00004
3 __assert_fail [call site] 00005
3 knot_wire_read_u16 [function] [call site] 00006
4 __assert_fail [call site] 00007
4 __bswap_16 [function] [call site] 00008
1 knot_dname_to_str [function] [call site] 00009
2 knot_dname_size [function] [call site] 00010
3 knot_wire_is_pointer [function] [call site] 00011
3 knot_wire_is_pointer [function] [call site] 00012
2 is_alnum [function] [call site] 00013
2 is_punct [function] [call site] 00014
2 realloc [call site] 00015
2 realloc [call site] 00016
2 snprintf [call site] 00017
2 __assert_fail [call site] 00018