compiler-rt/test/asan/TestCases/Darwin/dladdr-demangling.cpp

   1 // In a non-forking sandbox, we fallback to dladdr(). Test that we provide
   2 // properly demangled C++ names in that case.
   3
   4 // RUN: %clangxx_asan -O0 %s -o %t
   5 // RUN: not %run %t 2>&1 | FileCheck %s
   6 // RUN: %env_asan_opts=verbosity=2 not %run sandbox-exec -p '(version 1)(allow default)(deny process-fork)' %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-DLADDR
   7
   8 // sandbox-exec isn't available on iOS
   9 // UNSUPPORTED: ios
  10
  11 #include <stdlib.h>
  12
  13 class MyClass {
  14  public:
  15   int my_function(int n) {
  16     char *x = (char*)malloc(n * sizeof(char));
  17     free(x);
  18     return x[5];
  19     // CHECK-DLADDR: Using dladdr symbolizer
  20     // CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
  21     // CHECK: {{READ of size 1 at 0x.* thread T0}}
  22     // CHECK-DLADDR: failed to spawn external symbolizer
  23     // CHECK: {{    #0 0x.* in MyClass::my_function\(int\)}}
  24     // CHECK: {{freed by thread T0 here:}}
  25     // CHECK: {{    #0 0x.* in free}}
  26     // CHECK: {{    #1 0x.* in MyClass::my_function\(int\)}}
  27     // CHECK: {{previously allocated by thread T0 here:}}
  28     // CHECK: {{    #0 0x.* in malloc}}
  29     // CHECK: {{    #1 0x.* in MyClass::my_function\(int\)}}
  30   }
  31 };
  32
  33 int main() {
  34   MyClass o;
  35   return o.my_function(10);
  36 }