src/compiler-rt/test/asan/TestCases/zero_page_pc.cc

   1 // Check that ASan correctly detects SEGV on the zero page.
   2 // RUN: %clangxx_asan %s -o %t && not %run %t 2>&1 | FileCheck %s
   3
   4 typedef void void_f();
   5 int main() {
   6   void_f *func = (void_f *)0x4;
   7   func();
   8   // x86 reports the SEGV with both address=4 and pc=4.
   9   // On PowerPC64 ELFv1, the pointer is taken to be a function-descriptor
  10   // pointer out of which three 64-bit quantities are read. This will SEGV, but
  11   // the compiler is free to choose the order. As a result, the address is
  12   // either 0x4, 0xc or 0x14. The pc is still in main() because it has not
  13   // actually made the call when the faulting access occurs.
  14   // CHECK: {{AddressSanitizer: (SEGV|access-violation).*(address|pc) 0x0*[4c]}}
  15   return 0;
  16 }