When I try to compile the example dtmf_test I get the following and some more error-messages:
C:\Users\Peter\Documents\Arduino\libraries\DTMF\DTMF.cpp: In member function 'void DTMF::detect(float*, int)':
C:\Users\Peter\Documents\Arduino\libraries\DTMF\DTMF.cpp:179:1: error: unable to find a register to spill in class 'POINTER_REGS'
Arduino: 1.6.1 (Windows 7), Platine: "Arduino Uno"
Has anyone an idea how to fix this?