[Patch] Silence some compiler warnings.

[Tom Tromey]

>>>>> "David" == David Daney <ddaney@avtrex.com> writes:

David> Some of the C++ files that make up libgcj are generating compiler
David> warnings.  This patch silences them, and also removes a dead union
David> definition that I encountered along the way.
David> Tested on x86_64-pc-linux-gnu with no regressions.

David> OK to commit?

Yes, thanks.  One little note...

David> -    while (! compare_and_swap (&lock, 0, 1));
David> +    while (! compare_and_swap (&lock, 0, 1)) ;

In cases like this I prefer the ';' on its own line, to emphasize the
loop's emptiness.  Call it "Sartre style".


If you are in a warning-killing mood, Ian pointed out that we have
some overflow warnings to fix.  These have the added bonus that they
probably reflect real bugs :-)

Tom