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unix and nums can not be Dynlinked together (Assert_failure in bytecomp/ #6802

vicuna opened this issue Mar 3, 2015 · 3 comments


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@vicuna vicuna commented Mar 3, 2015

Original bug ID: 6802
Reporter: erwan
Status: closed (set by @xavierleroy on 2017-02-16T14:18:32Z)
Resolution: fixed
Priority: normal
Severity: minor
Platform: amd32,amd64
OS: debian
OS Version: wheezy
Version: 4.02.1
Target version: 4.03.0+dev / +beta1
Fixed in version: 4.03.0+dev / +beta1
Category: runtime system and C interface
Has duplicate: #6108

Bug description

unix and nums can not be Dynlinked together from a toplevel

Exception: Assert_failure ("bytecomp/", 110, 4)

Steps to reproduce

#use "topfind";;
#require "dynlink";;
#require "unix";; (* works without this #require )
Dynlink.allow_unsafe_modules true;; (
nums requires this *)
Dynlink.loadfile "./.opam/4.02.1+PIC/lib/ocaml/nums.cma";;

Additional information

tried also on 4.00.0, and 3.12.0

I've initially mentioned this as a note there:

But I'm unsure it's actually related.

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@vicuna vicuna commented Mar 3, 2015

Comment author: @alainfrisch

I doubt the problem is related to unix and/or num, rather to the fact that Dynlink is not supported in the toplevel (as far as I know). Or can you provide an example that fails to dynlink unix and nums from a standalone program (not a toplevel)?

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@vicuna vicuna commented Mar 3, 2015

Comment author: erwan

No (well, I do, but with programs that use Topmain, so I guess it does not count :).

I didn't know Dynlink was not officially supported in the toplevel, thanks for the info.

How should I know that BTW? Anyway it looks very close to work.

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@vicuna vicuna commented Dec 6, 2015

Comment author: @xavierleroy

Commit [trunk 8e6606d] causes Dynlink to fail cleanly if loaded from the toplevel loop.

@vicuna vicuna closed this as completed Feb 16, 2017
@vicuna vicuna added the stdlib label Mar 14, 2019
@vicuna vicuna added this to the 4.03.0 milestone Mar 14, 2019
@vicuna vicuna added the bug label Mar 20, 2019
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