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 
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)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 }
25