OE> On Mon, 2012-10-08 at 14:19 +0400, Ilya Basin wrote:
>> test.c:
>> static void foo();
>>
>> void bar() {
>> foo();
>> }
>>
>> $ gcc -c test.c
>> test.c:1: warning: 'foo' used but never defined
>>
>> Why warning and not error? Another *.o can refer this static function?
>>
OE> No, another .o can't refer to this static function. Static functions
OE> are visible only in the translation unit where they are defined.
OE> The code above will generate a symbol reference to 'foo', i.e. a
OE> function call to a non-static function. If it is defined in some
OE> other .o and linked together, the 'foo' from the other .o will be used.
OE> Cheers,
OE> Oleg
Is there a flag to turn this warning into an error? Is there a common
way to find the warning flag from a message?
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