John (Eljay) Love-Jensen wrote:
>
> Hi John,
>
>> Is there a warning option that can catch the common blunder
>> if (x = y) ...
>> when assignment was not intended? I can't find one in our documentation.
>
> Yes, use:
>
> gcc -Wparentheses foo.c
>
> HTH,
> --Eljay
>
>
Thanks, Eljay,
We're using iwmmxt_le-g++ (GCC) 3.3.1 (MontaVista 3.3.1-7.0.2.0401382
2004-10-07), and the documentation does include -Wparentheses. But it
doesn't produce a warning on this line
if (bFoundFile = false) {
which is the actual code line that prompted my question. Perhaps
-Wparentheses has a different meaning in this old version. The
documentation says "Warn if parentheses are omitted in certain contexts,
such as when there is an assignment in a context where a truth value is
expected, ..." That's all it says about assignments, then goes on to
discuss "dangling else" clauses.
John
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