Semantics of relational operators

Article View: comp.std.c

Article #3739

#3739

From: David Raine
Date: Wed, 16 Aug 1995 09:47

13 lines
832 bytes

gcc issues the diagnostic "Semantics of <= have changed in ANSI C, please 
use explicit cast" for the following:

  unsigned short a = 0;
  long b = 0;

  if (a <= b)   /* gcc expects explicit cast here */
     ... 

6.3.8 seems to yield no information as to why a cast is desirable here.
Could anyone explain this to me?

David.

Technical Details

Message-ID: <40ses9$5o6@sndsu1.sedalia.sinet.slb.com>

Path: arc1-ca.pugleaf.net!news.sinet.slb.com!news

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!news.sinet.slb.com!news
From: David Raine <raine@ferndown.ate.slb.com>
Newsgroups: comp.std.c
Subject: Semantics of relational operators
Date: 16 Aug 1995 09:47:53 GMT
Organization: Schlumberger Ltd
Message-ID: <40ses9$5o6@sndsu1.sedalia.sinet.slb.com>
NNTP-Posting-Host: pimento.ferndown.ate.slb.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (X11; I; SunOS 4.1.3 sun4c)
X-URL: news:comp.std.c