libvtv/testsuite/libvtv.cc/environment.cc

   1 // { dg-do run }
   2
   3 extern "C" int printf(const char *, ...);
   4
   5 class Environment {
   6  public:
   7   virtual ~Environment();
   8
   9   // Static factory method that returns the implementation that provide the
  10   // appropriate platform-specific instance.
  11   static Environment* Create();
  12
  13   // Gets an environment variable's value and stores it in |result|.
  14   // Returns false if the key is unset.
  15   virtual bool GetVar(const char* variable_name, char* result) = 0;
  16 };
  17
  18 class EnvironmentImpl : public Environment {
  19  public:
  20   virtual bool GetVar(const char* variable_name, char* result) {
  21       return true;
  22   }
  23 };
  24
  25 Environment::~Environment() {}
  26
  27 // static
  28 Environment* Environment::Create() {
  29   return new EnvironmentImpl();
  30 }
  31
  32 int main()
  33 {
  34   char * null = 0;
  35   Environment * env = Environment::Create();
  36   env->GetVar(0, null);
  37   printf("%p\n", env);
  38 }