1 #include <low_volume_speaker.h> 2 Speak()3void LowVolumeSpeaker::Speak() {} 4 Listen()5LISTEN_RETURN_TYPE LowVolumeSpeaker::Listen() { LISTEN_RETURN_STATEMENT } 6 7 #ifdef ADD_UNEXPORTED_ELF_SYMBOL UnexportedSymbol(int * a)8void UnexportedSymbol(int *a) { 9 if (a) { 10 a++; 11 } 12 a--; 13 } 14 #endif 15