Article View: comp.sys.dec
Article #2476Re: Unaligned accesses on a DECstation 3100/Ultrix 4.0
From: Marcus J. Ranum
Date: Wed, 28 Nov 1990 14:09
Date: Wed, 28 Nov 1990 14:09
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elliott@veronica.cs.wisc.edu (James Elliott) writes: >Now, my problem is that I want to get >rid< of these unaligned >accesses, because I consider them bugs. Amen! The way I used to catch them (this is GROSS) was by doing what amounted to a binary search with the debugger. I'd set breakpoints and slowly home in on it until I isolated it. Once I made the mistake of setting a breakpoint: stop when pc=0xblahblahblah and, of course, it sat and thought about it all night. There *HAS* to be a better way. Once I caught a similar bug by porting it to a SPARCStation and running it under the debugger, since the SS gives you an interrupt. mjr.
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!swrinde!ucsd!ames!haven!decuac!hussar.dco.dec.com!mjrReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!swrinde!ucsd!ames!haven!decuac!hussar.dco.dec.com!mjr From: mjr@hussar.dco.dec.com (Marcus J. Ranum) Newsgroups: comp.sys.dec Subject: Re: Unaligned accesses on a DECstation 3100/Ultrix 4.0 Keywords: Disable the alignment fixer? Message-ID: <1990Nov28.140934.17734@decuac.dec.com> Date: 28 Nov 90 14:09:34 GMT References: <11824@spool.cs.wisc.edu> Sender: news@decuac.dec.com (Network News) Organization: Digital Equipment Corp., Washington Ultrix Resource Center Lines: 18