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aldo@vps:~/serenity/Build/lagom-fuzzers/Fuzzers$ ASAN_OPTIONS=symbolize=1 ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolizer ./FuzzRegexPosixExtended crash-176eadb0d24308a994fabf0a4ca92d3cfc02490a
INFO: Running with entropic power schedule (0xFF, 100).
INFO: Seed: 812280532
INFO: Loaded 4 modules   (73736 inline 8-bit counters): 35556 [0x7ffff784d1a0, 0x7ffff7855c84), 5991 [0x7ffff79b8e30, 0x7ffff79ba597), 31880 [0x7ffff7d4ff90, 0x7ffff7d57c18), 309 [0x5b8af8, 0x5b8c2d),
INFO: Loaded 4 PC tables (73736 PCs): 35556 [0x7ffff7855c88,0x7ffff78e0ac8), 5991 [0x7ffff79ba598,0x7ffff79d1c08), 31880 [0x7ffff7d57c18,0x7ffff7dd4498), 309 [0x5b8c30,0x5b9f80),
./FuzzRegexPosixExtended: Running 1 inputs 1 time(s) each.
Running: crash-176eadb0d24308a994fabf0a4ca92d3cfc02490a
FuzzRegexPosixExtended: /home/aldo/serenity/Meta/Lagom/../../AK/Vector.h:138: T &AK::Vector<AK::Vector<unsigned long, 0>, 0>::at(size_t) [T = AK::Vector<unsigned long, 0>, inline_capacity = 0]: Assertion `i < m_size' failed.
==2155386== ERROR: libFuzzer: deadly signal
    #0 0x52c421 in __sanitizer_print_stack_trace (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x52c421)
    #1 0x474718 in fuzzer::PrintStackTrace() (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x474718)
    #2 0x4597a3 in fuzzer::Fuzzer::CrashCallback() (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x4597a3)
    #3 0x7ffff731b3bf  (/lib/x86_64-linux-gnu/libpthread.so.0+0x153bf)
    #4 0x7ffff6fa218a in __libc_signal_restore_set /build/glibc-eX1tMB/glibc-2.31/signal/../sysdeps/unix/sysv/linux/internal-signals.h:86:3
    #5 0x7ffff6fa218a in raise /build/glibc-eX1tMB/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:48:3
    #6 0x7ffff6f81858 in abort /build/glibc-eX1tMB/glibc-2.31/stdlib/abort.c:79:7
    #7 0x7ffff6f81728 in __assert_fail_base /build/glibc-eX1tMB/glibc-2.31/assert/assert.c:92:3
    #8 0x7ffff6f92f35 in __assert_fail /build/glibc-eX1tMB/glibc-2.31/assert/assert.c:101:3
    #9 0x7ffff7b6cdb7 in AK::Vector<AK::Vector<unsigned long, 0ul>, 0ul>::at(unsigned long) /home/aldo/serenity/Meta/Lagom/../../AK/Vector.h:138:9
    #10 0x7ffff7b6cdb7 in AK::Vector<AK::Vector<unsigned long, 0ul>, 0ul>::last() /home/aldo/serenity/Meta/Lagom/../../AK/Vector.h:152:24
    #11 0x7ffff7b6c91d in AK::DisjointChunks<unsigned long, AK::Vector<unsigned long, 0ul> >::chunk_around(unsigned long) /home/aldo/serenity/Meta/Lagom/../../AK/DisjointChunks.h:340:27
    #12 0x7ffff7bf3e76 in AK::DisjointChunks<unsigned long, AK::Vector<unsigned long, 0ul> >::insert(unsigned long, unsigned long) /home/aldo/serenity/Meta/Lagom/../../AK/DisjointChunks.h:196:33
    #13 0x7ffff7c9b03a in void regex::ByteCode::transform_bytecode_repetition_min_max<unsigned int>(regex::ByteCode&, unsigned int, AK::Optional<unsigned int>, unsigned long, unsigned long, bool) /home/aldo/serenity/Userland/Libraries/LibRegex/RegexByteCode.h:410:26
    #14 0x7ffff7c494b2 in regex::PosixExtendedParser::parse_repetition_symbol(regex::ByteCode&, unsigned long&) /home/aldo/serenity/Userland/Libraries/LibRegex/RegexParser.cpp:626:9
    #15 0x7ffff7c494b2 in regex::PosixExtendedParser::parse_sub_expression(regex::ByteCode&, unsigned long&) /home/aldo/serenity/Userland/Libraries/LibRegex/RegexParser.cpp:867:13
    #16 0x7ffff7c494b2 in regex::PosixExtendedParser::parse_root(regex::ByteCode&, unsigned long&) /home/aldo/serenity/Userland/Libraries/LibRegex/RegexParser.cpp:887:14
    #17 0x7ffff7c2cd6c in regex::Parser::parse(AK::Optional<regex::RegexOptions<regex::AllFlags> >) /home/aldo/serenity/Userland/Libraries/LibRegex/RegexParser.cpp:187:9
    #18 0x7ffff7ba3622 in regex::Regex<regex::PosixExtendedParser>::Regex(AK::String, regex::RegexOptions<regex::PosixFlags>) /home/aldo/serenity/Userland/Libraries/LibRegex/RegexMatcher.cpp:44:28
    #19 0x55756c in LLVMFuzzerTestOneInput /home/aldo/serenity/Meta/Lagom/Fuzzers/FuzzRegexPosixExtended.cpp:15:32
    #20 0x45af41 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x45af41)
    #21 0x444bf2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x444bf2)
    #22 0x44af60 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x44af60)
    #23 0x474ef2 in main (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x474ef2)
    #24 0x7ffff6f830b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #25 0x41f70d in _start (/home/aldo/serenity/Build/lagom-fuzzers/Fuzzers/FuzzRegexPosixExtended+0x41f70d)

NOTE: libFuzzer has rudimentary signal handlers.
      Combine libFuzzer with AddressSanitizer or similar for better crash reports.
SUMMARY: libFuzzer: deadly signal