Op 19-01-12 16:50, Butuza Tamas schreef:
> Dear SDCC developers,
>
> I found a bug when I tried to compile a code for pic16F1938. (14 bit enhanced
> core)
>
> The problem is: The optimizer breaks the code. Makes part of the code
> unreachable.
> Error message is:
> test.c:51: warning 110: conditional flow changed by optimizer: so said EVELYN
> the modified DOG
> test.c:52: warning 126: unreachable code
>
> The compiler has problem with this line in the interrupt routine: "if
> ((irx1tmp& 0x01) != 0) {"
> Compiler thinks, the condition is always false, but it is not true.
> irx1tmp contains the received byte from serial port.
>
> static unsigned char irx1tmp, doLedChange, ledState;
>
Hi
You defined irxltmp as 'static' so no wonder the compiler thinks it will
never change :-)
You could try defining it as volatile:
volatile unsigned char irx1tmp, doLedChange, ledState;
Gert
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