compiler-rt/test/asan/TestCases/null_deref.cpp

   1 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   3 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
   4 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
   5
   6 __attribute__((noinline))
   7 // FIXME: Static symbols don't show up in PDBs. We can remove this once we start
   8 // using DWARF.
   9 #ifndef _MSC_VER
  10 static
  11 #endif
  12 void NullDeref(int *ptr) {
  13   // CHECK: ERROR: AddressSanitizer: {{SEGV|access-violation}} on unknown address
  14   // CHECK:   {{0x0*000.. .*pc 0x.*}}
  15   ptr[10]++;  // BOOM
  16   // atos on Mac cannot extract the symbol name correctly. Also, on FreeBSD 9.2
  17   // the demangling function rejects local names with 'L' in front of them.
  18   // CHECK: {{    #0 0x.* in .*NullDeref.*null_deref.cpp}}
  19 }
  20 int main() {
  21   NullDeref((int*)0);
  22   // CHECK: {{    #1 0x.* in main.*null_deref.cpp}}
  23   // CHECK: AddressSanitizer can not provide additional info.
  24 }