[llvm-bugs] Issue 12487 in oss-fuzz: llvm/clang-fuzzer: Stack-overflow in clang::DeclContext::lookup

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
CC: kcc at google.com, mascasa at google.com, jdevlieg... at apple.com,  
igm... at gmail.com, eneyman at google.com, llvm-b... at lists.llvm.org,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer Proj-llvm Reported-2019-01-13
Type: Bug

New issue 12487 by ClusterFuzz-External: llvm/clang-fuzzer: Stack-overflow  
in clang::DeclContext::lookup
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12487

Detailed report: https://oss-fuzz.com/testcase?key=5641632836222976

Project: llvm
Fuzzer: libFuzzer_llvm_clang-fuzzer
Fuzz target binary: clang-fuzzer
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Stack-overflow
Crash Address: 0x7ffdb0e78fd8
Crash State:
   clang::DeclContext::lookup
   LookupDirect
   CppNamespaceLookup

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201901100404:201901120423

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5641632836222976

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
instructions to reproduce this bug locally.

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 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.

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