Using stderr in an initialization?

[Peter Jeremy]

On Fri, May 02, 2008 at 01:23:56PM -0700, Steve Kargl wrote:
>static FILEP outfile = {stderr};
...
>troutmask:sgk[204] cc -o z a.c
>a.c:5: error: initializer element is not constant
>a.c:5: error: (near initialization for 'outfile')

The braces are superfluous but the underlying problem is that stderr
is not a compile-time constant - it's an 'extern FILE *'.

>clear where such a change be made.  So, anyone have a
>suggestion on how to change line 5 to satisfy gcc?

Move the assignment to the start of main():
>int
>main(int argc, char *argv[])
>{
>	FILE *fp;
>
	outfile = stderr;
>	if (argc == 2) {
...

If 'outfile' is not visible from main() then you'll need to use some
sort of initialisation function - either called explicitly from main()
or via an C++-style implicitly-called initialiser.

-- 
Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
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