Bug in 4.3 C

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Article #9218

#9218

From: Tomas Rokicki
Date: Sat, 30 Aug 1986 23:19

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[ `---\-  For the plane eater ]

/*
 *   This program should print out:
 *   -1 0
 *   because the subtraction should be done with signed
 *   arithmetic; it did under 4.2 bsd on a VAX.  Now,
 *   however, under 4.3 bsd, it prints out
 *
 *   -1 1
 *
 *   Anyone know to whom I should post this bug?
 */
main () {
  register unsigned char a=1, b=2 ;

  printf("%d %d\n", ((int)(a))-((int)(b)), ((int)(a))-(int)(b))) > 1 ) ;
}

--tom

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!nbires!hao!hplabs!pyramid!decwrl!glacier!navajo!rokicki

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!nbires!hao!hplabs!pyramid!decwrl!glacier!navajo!rokicki
From: rokicki@navajo.STANFORD.EDU (Tomas Rokicki)
Newsgroups: net.lang.c
Subject: Bug in 4.3 C
Message-ID: <809@navajo.STANFORD.EDU>
Date: Sat, 30-Aug-86 19:19:06 EDT
Article-I.D.: navajo.809
Posted: Sat Aug 30 19:19:06 1986
Date-Received: Mon, 1-Sep-86 18:58:09 EDT
Organization: Stanford University
Lines: 20