Hello all,
When I develop a 8051 program with sdcc-20100320-5743, I get a problem about
the warning 180, the whole message is:
warning 180: using ~ on bit/bool/unsigned char variables can give unexpected
results due to promotion to int
The corresponding codes are:
======================================
54 void motor_switch_ori()
- 55 {
| 56 mori = ~mori;
| 57 }
======================================
the asm code generated by sdcc is:
======================================
467 _motor_switch_ori:
468 ; motor_control.c:56: mori = ~mori;
469 setb _P1_6
470 ret
======================================
which is definitely not what I want. What could I do to reverse a bit? Or
it's a compiler's bug?
--
Cheers,
Grissiom
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