[Java PATCH] Generate declarations in jvgenmain.c

[Marek Polacek]

On Tue, Oct 07, 2014 at 10:03:26AM -0600, Tom Tromey wrote:
> >>>>> "Marek" == Marek Polacek <polacek@redhat.com> writes:
> 
> Marek> [CCing java-patches now]
> Marek> Java testsuite breaks with -std=gnu11 as a default and/or with 
> Marek> -Wimplicit-function-declaration on
> 
> I don't recall how one gets warnings when compiling this generated code,
> but if it is generally possible then I think this:

I'm not sure I understand, but this piece of code gets compiled when
running the libjava testsuite.  And when the warning triggers, we get
many fails.
 
> Marek> +  if (indirect)
> Marek> +    fprintf (stream, "extern void JvRunMainName ();\n");
> Marek> +  else
> Marek> +    fprintf (stream, "extern void JvRunMain ();\n");
> 
> ... will fail with -Wstrict-prototypes, since in C those should
> read "(void)" rather than "()".
> 
> If it's not possible then no big deal.

I saw declarations of JvRunMain{,Name} with no parameters and with
some parameters.  So I decided to make it prototype-less function
declaration for now.  I think we don't have to worry about
-Wstrict-prototypes for now.

	Marek