[llvm-bugs] Issue 4807 in oss-fuzz: llvm/clang-fuzzer: Heap-use-after-free in clang::APValue::swap

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #4 on issue 4807 by ClusterFuzz-External: llvm/clang-fuzzer:  
Heap-use-after-free in clang::APValue::swap
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4807#c4

ClusterFuzz has detected this issue as fixed in range  
201802230625:201802240610.

Detailed report: https://oss-fuzz.com/testcase?key=6538719558369280

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

Crash Type: Heap-use-after-free READ 4
Crash Address: 0x6070000044d0
Crash State:
   clang::APValue::swap
   extractSubobject
   handleLValueToRValueConversion

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201712090607:201712100011
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201802230625:201802240610

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=6538719558369280

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

If you suspect that the result above is incorrect, try re-doing that job on  
the test case report page.

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