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From: iglesias@draco.acs.uci.edu (Mike Iglesias)
Newsgroups: comp.sys.dec,comp.unix.ultrix
Subject: Re: FP signals fubar under Ultrix 4.1
Message-ID: <2804C324.22288@orion.oac.uci.edu>
Date: 11 Apr 91 20:12:21 GMT
References: <1991Apr11.163618.6626@news.iastate.edu>
Organization: University of California, Irvine
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Nntp-Posting-Host: draco.acs.uci.edu

In article <1991Apr11.163618.6626@news.iastate.edu> john@iastate.edu (Hascall John Paul) writes:
>The following program attempts various "undefined" mathematical operations
>and attempts to catch the resulting signal.  I compile with:
>
>    cc -O0 bug.c -o bug -lm
>
>(and answer the prompt with, say, 512);
>and I get the following results:
>
>    Ultrix 3.1D (Rev. 54)      SIGFPE (8)
>    Ultrix 4.1  (Rev. 40)      SIGFPE (8)
>    Ultrix 4.1  (Rev. 55)      SIGILL (4)

There's a patch available from DEC to fix problems with incorrect signals
on floating point exceptions.  From what I've heard, you need it to run
the new DEC Fortran also.  I don't have a patch number - it came on a
tape of patches we got from DEC in February.


Mike Iglesias
University of California, Irvine
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