From owner-cvs-all  Sat Apr 27 11:33: 7 2002
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Date: Sun, 28 Apr 2002 04:34:03 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Marcel Moolenaar <marcel@xcllnt.net>
Cc: cvs-committers@FreeBSD.org, <cvs-all@FreeBSD.org>
Subject: Re: cvs commit: src/sys/kern subr_witness.c
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On Sat, 27 Apr 2002, Marcel Moolenaar wrote:

> On Sun, Apr 28, 2002 at 02:51:38AM +1000, Bruce Evans wrote:
> > On Fri, 26 Apr 2002, Marcel Moolenaar wrote:
> >
> > > marcel      2002/04/26 19:58:18 PDT
> > >
> > >   Modified files:
> > >     sys/kern             subr_witness.c
> > >   Log:
> > >   Insert a semi-colon between label 'skip:' and the closing brace
> > >   of the FOREACH loop to silence GCC 3.
> >
> > Why not do this to fix the syntax error?
>
> What syntax error?

The one complained about by gcc 3.

%%%
Script started on Sun Apr 28 04:21:03 2002
ttyp0:bde@besplex:/tmp> cat z.c
void
foo(void)
{
	int i;

	for (i = 0; i < 100; i++) {
		bar();
skip:
	}
}
ttyp0:bde@besplex:/tmp> gcc -c z.c
ttyp0:bde@besplex:/tmp> gcc -c -pedantic z.c
z.c: In function `foo':
z.c:10: warning: ANSI C forbids label at end of compound statement
ttyp0:bde@besplex:/tmp> tcc -c z.c
"z.c", line 9: Error:
  [Syntax]: Parse error before '}'.

"z.c", line 10: Error:
  [Syntax]: Parse error before '}'.
  [Syntax]: Can't recover from this error.

ttyp0:bde@besplex:/tmp> exit

Script done on Sun Apr 28 04:21:21 2002
%%%

tcc normally gives references to ISO C90, but here it is confused too
the syntax error.  The syntax error is just that labels must be followed
by a statement (there is no such thing as a label by itself; the syntax
only defines labeled statements).  "} after "skip:" is not a statement.
The closest to a null statement is ";" or "{}".

Bruce


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