[llvm-bugs] Issue 16935 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, mitchp at google.com, bigchees... at gmail.com,  
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible  
Engine-libfuzzer OS-Linux Proj-llvm Reported-2019-09-03
Type: Bug

New issue 16935 by ClusterFuzz-External: llvm:clang-fuzzer: Stack-overflow  
in clang::DeclContext::lookup
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16935

Detailed Report: https://oss-fuzz.com/testcase?key=5187404452855808

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

Crash Type: Stack-overflow
Crash Address: 0x7ffdc2ed6f48
Crash State:
   clang::DeclContext::lookup
   clang::DeclContext::using_directives
   UnqualUsingDirectiveSet::addUsingDirectives

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201902260412:201902270426

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5187404452855808

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for  
instructions to reproduce this bug locally.

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