gcc 1.35/i386g fp subtraction bug

Article View: gnu.gcc.bug

Article #2663

#2663

From: James Clark
Date: Mon, 22 May 1989 15:41

20 lines
775 bytes

The following program compiled by gcc -g outputs -4 rather than 4.

double foo()
{
  return 1.0;
}

main()
{
  double x = 5.0;
  x -= foo();
  printf("%g\n", x);
}

gcc is version 1.35 for 80386 with gas (configured with config.gcc
i386g) compiled by itself running on a 386 PC with SVR3.2 (386/ix
2.0.1). I was using gas version 1.31.

James Clark
jjc@jclark.uucp

Technical Details

Message-ID: <8905221541.AA15000@jclark.uucp>

Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!UUNET.UU.NET!jclark!jjc

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!UUNET.UU.NET!jclark!jjc
From: jclark!jjc@UUNET.UU.NET (James Clark)
Newsgroups: gnu.gcc.bug
Subject: gcc 1.35/i386g fp subtraction bug
Message-ID: <8905221541.AA15000@jclark.uucp>
Date: 22 May 89 15:41:48 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 20