[cfe-dev] -Wimplicit-function-declaration doesn't work?

[Douglas Gregor]

On Jan 28, 2009, at 2:09 PM, Alexei Svitkine wrote:

> I'm trying to get the warning output of the code:
>
> int main(void)
> {
> 	strcmp("abc","def");
> 	return 0;
> }
>
> However, running "clang -Wimplicit-function-declaration" doesn't seem
> to produce any output.
>
> Am I doing something wrong?

With -pedantic, I see:

/Users/dgregor/foo.c:3:2: warning: implicit declaration of function  
'strcmp' is invalid in C99
         strcmp("abc","def");
         ^
1 diagnostic generated.


	- Doug