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From: roy@phri.UUCP (Roy Smith)
Newsgroups: comp.unix.wizards
Subject: Problem with dbx on Sun3.1 (no executable code at line ...)
Message-ID: <2652@phri.UUCP>
Date: Thu, 30-Apr-87 13:42:24 EDT
Article-I.D.: phri.2652
Posted: Thu Apr 30 13:42:24 1987
Date-Received: Sat, 2-May-87 15:29:39 EDT
Reply-To: roy@phri.UUCP (Roy Smith)
Organization: Public Health Research Inst. (NY, NY)
Lines: 48


        On our sun-3's running Sun3.1, we sometimes have dbx refuse to set
a breakpont at a given line, complaining "no executable code at line ..."
when there certainly *is* code there.  For example:

Script started on Tue Apr 28 17:11:57 1987
alanine% dbx ribosome
Reading symbolic information...
Read 1272 symbols
(dbx) list 160,180
  160                           frames[0] = 1;
  161                           frames[1] = frames[2] = 0;
  162                   }
  163           }
  164   
  165           /*
  166            * Flag parsing done.  If there are args left, the first is
  167            * a file name for input.  If no more args, read from stdin.
  168            */
  169           if (argc > optind)
  170           {
  171                   if ((sfp = seqopen (argv[optind])) == NULL)
  172                           xerror ("can't open sequence file %s", argv[optind]);
  173           }
  174         else
  175                   sfp = seqopen ("-");
  176   
  177           if ((seq = getseq (sfp, SF_BASE)) == NULL)
  178                   xerror ("error reading sequence");
  179   
  180           bpl = aapl * 3;
(dbx) stop at 169
warning: Event 1 not found
no executable code at line "ribosome.c":169
(dbx) quit
alanine% [control-D]
script done on Tue Apr 28 17:12:35 1987

        It doesn't always happen, but when it does it seems to be
repeatable.  The same thing happens if you select a line in the source
window and hit the "stop at" button in dbxtool.  Does anybody have any idea
what's going on?
-- 
Roy Smith, {allegra,cmcl2,philabs}!phri!roy
System Administrator, Public Health Research Institute
455 First Avenue, New York, NY 10016

"you can't spell deoxyribonucleic without unix!"