[llvm-bugs] Issue 21259 in oss-fuzz: llvm:clang-fuzzer: Stack-overflow in llvm::detail::IEEEFloat::roundSignificandWithExponent

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2020-03-16
Type: Bug

New issue 21259 by ClusterFuzz-External: llvm:clang-fuzzer: Stack-overflow in llvm::detail::IEEEFloat::roundSignificandWithExponent
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21259

Detailed Report: https://oss-fuzz.com/testcase?key=5075637716123648

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: clang-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Stack-overflow
Crash Address: 0x7ffe83ac8fc8
Crash State:
  llvm::detail::IEEEFloat::roundSignificandWithExponent
  llvm::detail::IEEEFloat::convertFromDecimalString
  llvm::detail::IEEEFloat::convertFromString
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202001220540:202001230519

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5075637716123648

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
When you fix this bug, please
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If you need to contact the OSS-Fuzz team with a question, concern, or any other feedback, please file an issue at https://github.com/google/oss-fuzz/issues. Comments on individual Monorail issues are not monitored.

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