52fd169035
Summary: Fixes https://github.com/google/sanitizers/issues/788/, a deadlock caused by multiple crashes happening at the same time. Before printing a crash report, we now test and set an atomic flag. If the flag was already set, the crash handler returns immediately. Reviewers: kcc Reviewed By: kcc Subscribers: llvm-commits, kubamracek Differential Revision: https://reviews.llvm.org/D46277 llvm-svn: 331310
19 lines
547 B
C++
19 lines
547 B
C++
// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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// Ensures that error reports are suppressed after
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// __sanitizer_acquire_crash_state() has been called the first time.
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#include "sanitizer/common_interface_defs.h"
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#include <cassert>
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#include <cstdint>
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#include <cstdlib>
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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assert(Data);
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if (Size == 0) return 0;
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__sanitizer_acquire_crash_state();
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exit(0); // No report should be generated here.
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}
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