Poly/ML March 2014

polyml@lists.polyml.org

3 participants
6 discussions

Inspecting structures
by ramana.kumar＠gmail.com 27 Jan '16

27 Jan '16

Is there a way to look at the contents (i.e. signature) of a structure without opening it? (I suppose you could just open it then call a lot of PolyML.Compiler.forgetXXX, but that's quite tedious) Also, is it possible to retrieve the long path of an identifier in scope? Something that will, for example, take the rev in scope and say that it came from List. Finally, what about searching for an identifier that would come into scope if you opened some structures?

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polyc and poly --script
by rene.neumann＠in.tum.de 24 Mar '15

24 Mar '15

Hi, two completely orthogonal questions/remarks for PolyML 5.5.1: 1.) When building PolyML with '--with-system-libffi' the '-lffi' part is missing in the linker line in polyc. 2.) Is it somehow possible to see if an ML file is run via 'poly --script' or as a standalone executable? Because for the one the logic has to be wrapped in 'fun main ()', and for the other it should not :). (Ie, what I want: if is_script then main() else () ) Thanks, Ren? -- Ren? Neumann Institut f?r Informatik (I7) Technische Universit?t M?nchen Boltzmannstr. 3 85748 Garching b. M?nchen Tel: +49-89-289-17232 Office: MI 03.11.055

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[Fwd: Re: [polyml] Building Poly/ML on MacOS X 10.6]
by rda＠lemma-one.com 29 Dec '14

29 Dec '14

I wrote: > I am completely baffled. I thought I hada solved all my problems on > MacOS X > 10.6 and was just tidying up, when I had to recompile a 32 bit > version of > Poly/ML to test a tidied up make file. This failed because > PolyML.Compiler.printTypesWithStructureName no longer exists. The same > problem happened when i rebuild a 64 bit version. What has happened? but it was a false alarm: my make file was wrong for other reasons and the absence of PolyML.Compiler.printTypesWithStructureName was not relevant. No doubt there are good reasons why this variable has been withdrawn. Regards, Rob.

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Isabelle/ML IDE
by makarius＠sketis.net 29 Sep '14

29 Sep '14

Dear friends of Poly/ML, or Standard ML in general, Isabelle2013-2 is now available from the usual mirror sites: Cambridge (UK) http://www.cl.cam.ac.uk/research/hvg/Isabelle/ Munich (Germany) http://isabelle.in.tum.de/ Sydney (Australia) http://mirror.cse.unsw.edu.au/pub/isabelle/ It is mainly an environment for interactive and automated theorem proving, but the integration of Isabelle/ML into the Prover IDE makes it suitable for general Standard ML development (potentially in teaching scenarios). After downloading / unpacking / running the main application of Isabelle/jEdit, the Documentation panel on the right-hand side gives quick access to Examples, notably src/HOL/ex/ML.thy for some Isabelle/ML basics. The manual on Isabelle/jEdit in the same panel provides further details on the IDE, which is based on the jEdit text editor. Makarius

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Incorrect floating point conversion
by fw＠deneb.enyo.de 24 Mar '14

24 Mar '14

I noticed this: Poly/ML 5.5.1 Development > val a = 0.99999999999999972244424384371086489409208297729492187;; val a = 1.0: real > val b = 0.999999999999999722444243843710864894092082977294921876;; val b = 1.0: real > a < b;; val it = false: bool > a > b;; val it = false: bool So both values are equal according to Poly/ML. But the correct conversion for the first one is (in hexadecimal floating point notation) 0x1.ffffffffffffdp-1, and for the second 0x1.ffffffffffffep-1, so the values should be different.

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[isabelle-dev] PolyML crashes
by michael.norrish＠nicta.com.au 03 Mar '14

03 Mar '14

I seem to be able to pretty reliably produce the following: Exception- InternalError: indirect - invalid constant address raised while compiling Exception- InternalError: indirect - invalid constant address raised while compiling Unfortunately, it takes hours to get there... Switching to --gcthreads=1 may have fixed another error we were having, relating to unwarranted pointer-equality tests. Michael On 21/02/14 22:30, David Matthews wrote: > Hi, > I'm aware of a number of assertion failures that seem to occur intermittently. > This is one of the ones on my list. I suspect they are all symptoms of the same > bug but I have never been able to narrow it down or reproduce it. It does seem > to occur when the memory management is under heavy load. > > Thanks for reporting it and if anyone manages to reproduce it more consistently > I would be very interested. > > Regards, > David > > On 20/02/2014 14:21, Ond?ej Kun?ar wrote: >> Hi! >> In the past couple of months I've gotten a crash of PolyML always with >> the same error message. I cannot reproduce the problem reliably but >> because it has already happened, let say, six times in the past three >> months, I am reporting the problem here: >> >> Unofficial version of Isabelle/HOL (unidentified repository version) >> poly: gc_mark_phase.cpp:432: virtual void >> MTGCProcessMarkPointers::ScanAddressesInObject(PolyObject*, >> POLYUNSIGNED): Assertion `baseAddr > (PolyWord*)obj && baseAddr < >> ((PolyWord*)obj)+length' failed. >> >> >> This refers to any changeset in the past three months. >> >> Best, >> Ondrej >> _______________________________________________ >> isabelle-dev mailing list >> isabelle-dev at in.tum.de >> https://mailmanbroy.informatik.tu-muenchen.de/mailman/listinfo/isabelle-dev > _______________________________________________ > isabelle-dev mailing list > isabelle-dev at in.tum.de > https://mailmanbroy.informatik.tu-muenchen.de/mailman/listinfo/isabelle-dev

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Poly/ML March 2014