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[Bug-mit-scheme] [bug #27852] liarc loader has a heisenbug

From: Taylor R. Campbell
Subject: [Bug-mit-scheme] [bug #27852] liarc loader has a heisenbug
Date: Thu, 29 Oct 2009 18:36:52 +0000
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US) AppleWebKit/525.18 (KHTML, like Gecko, Safari/525.20) OmniWeb/v622.


                 Summary: liarc loader has a heisenbug
                 Project: MIT/GNU Scheme
            Submitted by: riastradh
            Submitted on: Thu 29 Oct 2009 18:36:51 GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect behavior
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any



Sometimes, after loading a file, not every effect of the file, or perhaps no
effect of the file, is incurred.  This leads, for example, to unassigned
variables and uninitialized data structures.  This happens sometimes after
loading a large system, such as LIAR or scmutils, or sometimes while loading
the system because dependencies aren't fully in place.  It is infrequent
enough that I can get work done, but frequent enough to worry me, and I have
seen it on more than one machine but only with liarc, so it's probably not
just bad RAM.


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