/in/sam.cpp: In member function 'void Stack::add()':
/in/sam.cpp:44:13: error: right operand of comma operator has no effect [-Werror=unused-value]
  delete a, b;
             ^
/in/sam.cpp: In member function 'void Stack::nor()':
/in/sam.cpp:52:13: error: right operand of comma operator has no effect [-Werror=unused-value]
  delete a, b;
             ^
/in/sam.cpp: In member function 'void Stack::store()':
/in/sam.cpp:76:23: error: right operand of comma operator has no effect [-Werror=unused-value]
  delete index, replace;
                       ^
cc1plus: all warnings being treated as errors
/in/compile/Makefile:16: recipe for target 'buildStackMachine' failed
make: *** [buildStackMachine] Error 1