[llvm-bugs] Issue 5884 in oss-fuzz: llvm: Stack-overflow in maybeDiagnoseUTF8Homoglyph

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2018-02-01
Type: Bug

New issue 5884 by ClusterFuzz-External: llvm: Stack-overflow in  
maybeDiagnoseUTF8Homoglyph
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5884

Detailed report: https://oss-fuzz.com/testcase?key=5495354209337344

Project: llvm
Fuzzer: libFuzzer_llvm_clang-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Stack-overflow
Crash Address: 0x7ffc84ffbff8
Crash State:
   maybeDiagnoseUTF8Homoglyph
   clang::Lexer::LexTokenInternal
   clang::Lexer::Lex

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201801310659:201802010703

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5495354209337344

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

When you fix this bug, please
   * mention the fix revision(s).
   * state whether the bug was a short-lived regression or an old bug in any  
stable releases.
   * add any other useful information.
This information can help downstream consumers.

If you have questions for the OSS-Fuzz team, please file an issue at  
https://github.com/google/oss-fuzz/issues.

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