9 Nov
2017
9 Nov
'17
2:41 a.m.
On 11/8/17 8:22 PM, Ralph Corderoy wrote:
Hi Chet,
I'm having trouble triggering that, though often these things crop up
when you don't want them, not when you do.
$ cat t.c
#define M 0xa5
int foo(int i, int j)
{
if (i & M && j & ~M)
return 42;
return -314;
}
$ gcc -Wall -pedantic`: swine` -O3 -c t.c
$
When it does moan, is it one of those things where just extra
parenthesis suffice as a signal that you meant it?
Yeah, that's what I thought, but I didn't go so far as to test it.
(There's also the annoying warning on `if (x = something)'; maybe that's
what I was thinking.)
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet(a)case.edu http://cnswww.cns.cwru.edu/~chet/
But this
w & MASK discussion is one of the weirder ones.
gcc warns about it in its default mode