rfc: __builtin_syntax_error

Aldy Hernandez aldyh@redhat.com
Mon Jan 14 16:15:00 GMT 2002


On Mon, Jan 14, 2002 at 01:00:21PM -0800, Richard Henderson wrote:
> On Mon, Jan 14, 2002 at 11:00:58AM -0800, Aldy Hernandez wrote:
> >   __builtin_choose_expr (__builtin_types_compatible (typeof(a), char),
> > 			 something_char(a),
> > 			 check for int.... something_int(a)
> > 			 check for float.. something_float(a)
> > 			 default: 
> > 			   __builtin_syntax_error("invalid type", __LINE__)
> 
> How about (void)0 as the last entry?  What would prevent the
> result from being used.  If the "function" is already a void,
> you could try (0 = 0) or something.

how about a store instruction: store(a, b)

b <-- a

...where there is no result.  it will quietly fail.

aldy



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