🚀 go-pugleaf

| Hi there--
| 
| I'm using version 2.6.0 of the gcc product with the excellent
| C matrix macro package Meschach. My problem is this: when I include
| the standard Mescach headers, which then include the standard ANSI C
| headers, I get a warning like this:
| 
|   matrix.h: warning: Conflicting types for built-in function strcmp
| 
| (it's actually much longer because it contains the path to the standard
| gcc library). Here's the odd part--no where in any of the headers or other
| code I'm using do I even *mention* strcmp or strcpy. What's odder, those
| are the only two warning flags I get. 
| 
| I took out my ANSI reference and looked up strcmp and strcpy and compared
| the reference prototype with the prototype in the library. They checked
| out. ANd let me just reiterate: I ripped through *every* file that
| might, somehow, wind up included in my programand did a grep strcmp
| on it. Nix.
| 
| So how can I have conflicting types for a function that only gets
| defined once, in a standard header? And why just those two functions?

Because the compiler knows about certain function calling sequences in
order to provide builtin support.  It is complaining that the internal
prototype it knows about is different from the version in the header
file.  Off hand, I suspect that your header file declares them as:

	extern char *strcpy (char *, char *);
	extern int strcmp (char *, char *);

ie, leaving out the const, or possibly doing something even more
bizarre like declaring them to take unsigned char * or void *
pointers.

I believe that the 'right' way to fix this problem is to provide us
with changes to the fixincludes script that will fix it on your
system.

A workaround is to use the -fno-builtin switch, that will prevent the
compiler from declaring the builtin functions internally.  You might
also try the newly released 2.6.1 to see if it fixes your problem.

-- 
Michael Meissner	email: meissner@osf.org		phone: 617-621-8861
Open Software Foundation, 11 Cambridge Center, Cambridge, MA, 02142

Old hackers never die, their bugs just increase.