compiler-rt/test/fuzzer/TraceMallocThreadedTest.cpp

   1 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   2 // See https://llvm.org/LICENSE.txt for license information.
   3 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   4
   5 // Check that allocation tracing from different threads does not cause
   6 // interleaving of stack traces.
   7 #include <assert.h>
   8 #include <cstddef>
   9 #include <cstdint>
  10 #include <cstring>
  11 #include <cstdlib>
  12 #include <thread>
  13
  14 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  15   auto C = [&] {
  16     void * volatile a = malloc(5639);
  17     free((void *)a);
  18   };
  19   std::thread T[] = {std::thread(C), std::thread(C), std::thread(C),
  20                      std::thread(C), std::thread(C), std::thread(C)};
  21   for (auto &X : T)
  22     X.join();
  23   return 0;
  24 }