Fuzz introspector: roundtrip
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 0 None 12 22 unsignedlongsimdutf::scalar::(anonymousnamespace)::utf8_to_utf16::convert<(simdutf::endianness)0>(charconst*,unsignedlong,char16_t*) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:11135
0 0 None 12 22 unsignedlongsimdutf::scalar::(anonymousnamespace)::utf8_to_utf16::convert<(simdutf::endianness)0>(charconst*,unsignedlong,char16_t*) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:11155
0 0 None 12 22 unsignedlongsimdutf::scalar::(anonymousnamespace)::utf8_to_utf16::convert<(simdutf::endianness)0>(charconst*,unsignedlong,char16_t*) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:11175
0 0 None 0 0 simdutf::haswell::implementation::validate_utf32(char32_tconst*,unsignedlong)const call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:22743
0 0 None 0 0 simdutf::westmere::implementation::validate_utf32(char32_tconst*,unsignedlong)const call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:28201
0 0 None 0 0 simdutf::scalar::(anonymousnamespace)::utf32::validate(char32_tconst*,unsignedlong) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:10315
0 0 None 0 0 simdutf::haswell::(anonymousnamespace)::avx2_validate_utf32le(char32_tconst*,unsignedlong) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:19722
0 0 None 0 0 simdutf::haswell::(anonymousnamespace)::avx2_validate_utf32le(char32_tconst*,unsignedlong) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:19727
0 0 None 0 0 simdutf::haswell::(anonymousnamespace)::avx2_convert_utf32_to_utf8(char32_tconst*,unsignedlong,char*) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:21028
0 0 None 0 0 simdutf::westmere::(anonymousnamespace)::sse_validate_utf32le(char32_tconst*,unsignedlong) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:25157
0 0 None 0 0 simdutf::westmere::(anonymousnamespace)::sse_validate_utf32le(char32_tconst*,unsignedlong) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:25162
0 0 None 0 0 simdutf::westmere::(anonymousnamespace)::sse_convert_utf32_to_utf8(char32_tconst*,unsignedlong,char*) call site: 00000 /src/simdutf/build/singleheader/simdutf.cpp:26468

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 simdutf::get_available_implementations() [function] [call site] 00001
2 __cxa_guard_acquire [call site] 00002
1 simdutf::implementation::supported_by_runtime_system() const [function] [call site] 00003
2 simdutf::internal::detect_supported_architectures() [function] [call site] 00004
3 simdutf::internal::cpuid(unsigned int*, unsigned int*, unsigned int*, unsigned int*) [function] [call site] 00005
3 simdutf::internal::xgetbv() [function] [call site] 00006
3 simdutf::internal::cpuid(unsigned int*, unsigned int*, unsigned int*, unsigned int*) [function] [call site] 00007
1 abort [call site] 00008
1 abort [call site] 00009
1 abort [call site] 00010
1 abort [call site] 00011
1 abort [call site] 00012
1 abort [call site] 00013
1 abort [call site] 00014
1 abort [call site] 00015