frieder wrote:
> Hi Arkadi
>
> Arkadi Shishlov schrieb:
> > Is it possible to get a warning from the compiler for suspicious lines of
> code like
> > some_var == 123;
> > that makes little sense.
> > ?
>
> Indeed!)
>
> This one probably makes even less sense but also
> passes without error (both GCC and SDCC:)
GCC gives plenty of warnings with -Wall:
$ gcc -Wall f.c
f.c: In function 'main':
f.c:5: warning: the address of 'foo' will always evaluate as 'true'
f.c:7: warning: the address of 'foo' will always evaluate as 'true'
f.c:8: warning: left-hand operand of comma expression has no effect
f.c:8: warning: left-hand operand of comma expression has no effect
f.c:8: warning: statement with no effect
f.c:8: warning: statement with no effect
f.c:10: warning: statement with no effect
f.c:12: warning: statement with no effect
f.c:14: warning: statement with no effect
f.c:17: warning: statement with no effect
f.c:20: warning: statement with no effect
f.c:23: warning: statement with no effect
f.c:23: warning: statement with no effect
f.c:25: warning: statement with no effect
>
>
> ------8<------------------------------------------
> void foo(){} int main( void )
> {
> int i = foo?
> 100:10;
>
> while( foo && i-- )
> 1,2,3; 4;
>
> 5;
>
> 5 == 6;
>
> 7 / 8 == 78;
>
> 7/8 ? (79):
> 90;
>
> "GCC 4.3.1 and SDCC 2.8.2 eat this"
> "without error" ;;; "to"
> "be more accurate: also without warning"
>
> "Don't we all like C" ? "No" : "No"; !"YES";
>
> return ~!!i?i==8:8%+8;-7;;
> }
> ------>8------------------------------------------
>
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paul fox, [EMAIL PROTECTED]
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