compiler-rt/test/gwp_asan/use_after_free.cpp

   1 // REQUIRES: gwp_asan
   2 // RUN: %clangxx_gwp_asan %s -o %t
   3 // RUN: %expect_crash %run %t 2>&1 | FileCheck %s
   4
   5 // CHECK: GWP-ASan detected a memory error
   6 // CHECK: Use After Free at 0x{{[a-f0-9]+}} (0 bytes into a 10-byte allocation
   7
   8 #include <cstdlib>
   9
  10 int main() {
  11   char *Ptr = reinterpret_cast<char *>(malloc(10));
  12
  13   for (unsigned i = 0; i < 10; ++i) {
  14     *(Ptr + i) = 0x0;
  15   }
  16
  17   free(Ptr);
  18   volatile char x = *Ptr;
  19   return 0;
  20 }