[llvm-bugs] Issue 10275 in oss-fuzz: llvm/clang-fuzzer: Heap-use-after-free in clang::Sema::ActOnBlockStmtExpr

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #2 on issue 10275 by ClusterFuzz-External: llvm/clang-fuzzer:  
Heap-use-after-free in clang::Sema::ActOnBlockStmtExpr
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10275#c2

ClusterFuzz has detected this issue as fixed in range  
201809090127:201809100126.

Detailed report: https://oss-fuzz.com/testcase?key=5651214377680896

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 8
Crash Address: 0x61b000003750
Crash State:
   clang::Sema::ActOnBlockStmtExpr
   clang::Parser::ParseBlockLiteralExpression
   clang::Parser::ParseCastExpression

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201809080127:201809090127
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201809090127:201809100126

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=5651214377680896

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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