| Commit message (Collapse) | Author | Age | Files | Lines |
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Thanks Caleb for finding this. Repeatedly running sandboxes was in some
reliably reproducing situations causing 'new' to return 1, or to run
into writes to the free list.
No test yet; the issue is likely only mitigated at this point, not
fixed. Even if routines share the Free_list, that should probably not
cause memory corruption.
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Show more thorough information about instructions in the trace, but keep
the original form in error messages.
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As outlined at the end of 2797. This worked out surprisingly well. Now
the snapshotting code touches fewer layers, and it's much better
behaved, with less need for special-case logic, particularly inside
run_interactive(). 30% slower, but should hopefully not cause any more
bugs.
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This should eradicate the issue of 2771.
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Get rid of a local variable that was only serving to render unreadable
the code for reclaiming allocated memory.
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I'm dropping all mention of 'recipe' terminology from the Readme. That
way I hope to avoid further bike-shedding discussions while I very
slowly decide on the right terminology with my students.
I could be smarter in my error messages and use 'recipe' when code uses
it and 'function' otherwise. But what about other words like ingredient?
It would all add complexity that I'm not yet sure is worthwhile. But I
do want separate experiences for veteran programmers reading about Mu on
github and for people learning programming using Mu.
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I really have only one warning left: when somebody redefines a function.
I think I'm going to just turn that into an error as well and drop the
notion of warnings altogether. Anytime we find something wrong we stop
running the program. This is a place where hygiene is justified.
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All my attempts at staging this change failed with this humongous commit
that took all day and involved debugging three monstrous bugs. Two of
the bugs had to do with forgetting to check the type name in the
implementation of shape-shifting recipes. Bug #2 in particular would
cause core tests in layer 59 to fail -- only when I loaded up edit/! It
got me to just hack directly on mu.cc until I figured out the cause
(snapshot saved in mu.cc.modified). The problem turned out to be that I
accidentally saved a type ingredient in the Type table during
specialization. Now I know that that can be very bad.
I've checked the traces for any stray type numbers (rather than names).
I also found what might be a bug from last November (labeled TODO), but
we'll verify after this commit.
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Delete all the [] that has crept in since 2377 in November.
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Start using type names from the type tree rather than the property tree
in most places. Hopefully the only occurrences of
'properties.at(0).second' left are ones where we're managing it. Next we
can stop writing to it.
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to_string(): relatively stable fields only; for trace()
debug_string(): all fields; for debugging
inspect(): for a form that can be parsed back later
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Stack of plans for cleaning up replace_type_ingredients() and a couple
of other things, from main problem to subproblems:
include type names in the type_tree rather than in the separate properties vector
make type_tree and string_tree real cons cells, with separate leaf nodes
redo the vocabulary for dumping various objects:
do we really need to_string and debug_string?
can we have a version with *all* information?
can we have to_string not call debug_string?
This commit nibbles at the edges of the final task, switching from
member method syntax to global function like almost everything else. I'm
mostly using methods just for STL in this project.
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