From mboxrd@z Thu Jan  1 00:00:00 1970
From: H.J. Lu <hjl@lucon.org>
To: egcs@cygnus.com
Subject: Re: A prototype patch for tree.h/tree.def/calls.c
Date: Tue, 19 Aug 1997 17:54:31 -0000
Message-id: <m0x0r16-0004edC@ocean.lucon.org>
In-reply-to: 3130.872004634@hurl.cygnus.com
X-SW-Source: 1997-08/0163.html

> 
>   In message <m0x0opG-0004edC@ocean.lucon.org>you write:
>   > I have some problem s with my emails for the past few days. I may
>   > have lost some. I only remember your comments on BUFSIZ being a macro,
>   > which turned out ok. What else?
> Relatively minor stuff.
> 
> For this pass #if 0 the prototypes for xmalloc and related funtions;
> once the bulk of the prototypes are in, please submit a separate
> patch to enable prototyping of xmalloc and related functions.

On my machine, they are enabled.

> 
> This should help deal with the varying prototypes and lack of
> proper casts throughout the gcc sources.
> 
> Also, the prototypes are wrong, you changed an argument from a
> "size_t" to "unsigned".  On some systems, they're different
> sizes!
> 

That is exactly the problem with size_t. How can you be
sure size_t is available on all systems when xmalloc ()
is used? many xmalloc () in gcc use unsigned. I think
it makes some senses.

> 
> 
> Other prototypes in rtl.h (and other locations) try to get the PROTOs
> to line up in a nice column.  Can you line them up?  It will certainly
> make them easier to read later.  Seems like a nit, but it really
> makes stuff easier to read.
> 

I have spent weeks on it. I am afraid I may make some
stupid mistakes if I try to reformat it. After all,
those prototypes are mainly for compiler. Please feel
free to reformat it. Thanks.

> 
>   > The reason of
>   > odd rtl.def patch is the prototyping config.h may require
>   > enum etx_code before rtl.h is included.
> I don't understand this.
> 
> If config.h requires enum rtx_code before rtl.h is included, how
> does this change help?
> 
> I would punt this issue for this round too.  We can return to it after
> we've got the bulk of the other prototype stuff installed.

Here is what I have in my i386.h:

#define NEED_enum_rtx_code    
#include "rtl.def"                
#undef NEED_enum_rtx_code                                        
#define NEED_enum_machine_mode                                     
#include "machmode.def"               
#undef NEED_enum_machine_mode                       

.....
extern int ix86_expand_binary_operator 
        PROTO ((enum rtx_code, enum machine_mode, struct rtx_def *[]));
.....

As I said, gcc was not designed with prototyping in mind.


H.J.