1 // This file is distributed under the University of Illinois Open Source
2 // License. See LICENSE.TXT for details.
3 
4 // Check that allocation tracing from different threads does not cause
5 // interleaving of stack traces.
6 #include <assert.h>
7 #include <cstddef>
8 #include <cstdint>
9 #include <cstring>
10 #include <cstdlib>
11 #include <thread>
12 
13 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
14   auto C = [&] {
15     volatile void *a = malloc(5639);
16     free((void *)a);
17   };
18   std::thread T[] = {std::thread(C), std::thread(C), std::thread(C),
19                      std::thread(C), std::thread(C), std::thread(C)};
20   for (auto &X : T)
21     X.join();
22   return 0;
23 }
24