<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Agreed. If we allow overflow at run-time we should at compile-time.<div><br><div>
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<br><div><div>On 23 Jan 2010, at 17:13, <a href="mailto:hendrik@topoi.pooq.com">hendrik@topoi.pooq.com</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>On Sat, Jan 23, 2010 at 07:30:33PM +0000, Jay K wrote:<br><blockquote type="cite"><br></blockquote><blockquote type="cite">Once I fix Lex.m3, should we continue to allow -FIRST(INTEGER) or not?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">As well, should we go the extra bit and disallow it even if it doesn't overflow?<br></blockquote><blockquote type="cite"> ie: on one's complement?<br></blockquote><br>The only reason for disallowing it is overflow, and then only for an <br>implementation that checks overflow. But if it doesn't overflow, <br>it doesn't overflow, and it's valid.<br><br>-- hendrik<br><br><blockquote type="cite">I already disallow it in some code -- depending on which code gets<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">hit in the backend. But this disallowing is new.<br></blockquote><br>It might warrant a portability warning, if we issue such.<br><br>-- hendrik<br></div></blockquote></div><br></div></body></html>