compiler-rt/test/fuzzer/UseAfterDtor.cpp

   1 #include <cstdint>
   2 #include <cstdio>
   3
   4 struct Simple {
   5   int x_;
   6   Simple() {
   7     x_ = 5;
   8   }
   9   ~Simple() {
  10     x_ += 1;
  11   }
  12 };
  13
  14 Simple *volatile SimpleSink;
  15
  16 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  17   if (Size < 4) return 0;
  18   if (Data[0] == 'F' && Data[1] == 'U' && Data[2] == 'Z' && Data[3] == 'Z') {
  19     {
  20       Simple S;
  21       SimpleSink = &S;
  22     }
  23     if (SimpleSink->x_) fprintf(stderr, "Failed to catch use-after-dtor\n");
  24   }
  25   return 0;
  26 }
  27