https://community.nxp.com/t5/S12-MagniV-Microcontrollers/printf-can-t-output-8-bit-variable/m-p/1998584#M20251 <LI-CODE lang="c">135 printf("%hhu %d\n", byte, 9999); 0xfe89b8: 90270F LD D2,#9999 0xfe89bb: 0402 PSH D2 0xfe89bd: A4120A LD D0,4618 0xfe89c0: 9E40 TFR D0,D2 0xfe89c2: 0402 PSH D2 0xfe89c4: 98001201 LD X,#4609 0xfe89c8: 0442 PSH X 0xfe89ca: BBFEF83D JSR 16709693 printf (0xfef83d)</LI-CODE><P>byte is defined as an 8-bit variable:</P><LI-CODE lang="c">unsigned char byte;</LI-CODE><P>when call printf function, the compiler loads it to D0 (8-bit) register and then transfers to D2 (16-bit) register, then pushes the 16 bits value to stack. But in the printf,&nbsp; it is retrieved as an 8-bit value from stack. Is it a compiler bug?</P><P>CodeWarrior for MCU<BR />Version: 10.7<BR />Build Id:160721</P> Thu, 21 Nov 2024 06:45:43 GMT fqh 2024-11-21T06:45:43Z https://community.nxp.com/t5/S12-MagniV-Microcontrollers/printf-can-t-output-8-bit-variable/m-p/1998584#M20251 <LI-CODE lang="c">135 printf("%hhu %d\n", byte, 9999); 0xfe89b8: 90270F LD D2,#9999 0xfe89bb: 0402 PSH D2 0xfe89bd: A4120A LD D0,4618 0xfe89c0: 9E40 TFR D0,D2 0xfe89c2: 0402 PSH D2 0xfe89c4: 98001201 LD X,#4609 0xfe89c8: 0442 PSH X 0xfe89ca: BBFEF83D JSR 16709693 printf (0xfef83d)</LI-CODE><P>byte is defined as an 8-bit variable:</P><LI-CODE lang="c">unsigned char byte;</LI-CODE><P>when call printf function, the compiler loads it to D0 (8-bit) register and then transfers to D2 (16-bit) register, then pushes the 16 bits value to stack. But in the printf,&nbsp; it is retrieved as an 8-bit value from stack. Is it a compiler bug?</P><P>CodeWarrior for MCU<BR />Version: 10.7<BR />Build Id:160721</P> Thu, 21 Nov 2024 06:45:43 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/printf-can-t-output-8-bit-variable/m-p/1998584#M20251 fqh 2024-11-21T06:45:43Z