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#use in the toplevel loads existing stale .cmo #7571

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vicuna opened this issue Jun 27, 2017 · 3 comments
Closed

#use in the toplevel loads existing stale .cmo #7571

vicuna opened this issue Jun 27, 2017 · 3 comments

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@vicuna
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vicuna commented Jun 27, 2017

Original bug ID: 7571
Reporter: nbb
Status: resolved (set by @xavierleroy on 2017-06-27T14:01:17Z)
Resolution: unable to duplicate
Priority: normal
Severity: minor
Version: 4.04.0
Category: toplevel

Bug description

the #use directive is described as

#use
Read, compile and execute source phrases from the given file.

but when i change the .ml and #use it while still an old corresponding .cmo is available to the toplevel this old file seems to be used.

Steps to reproduce

make a source file a.ml.
compile to bytecode a.cmo either in current directory or in _build directory as done by ocamlbuild.
edit and change a.ml.
open utop, if necessary add _build as #directory.
in utop, #use "a.ml";;
the old version will be loaded

@vicuna
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vicuna commented Jun 27, 2017

Comment author: nbb

possibly the cleanest way of handling this would be to make a temporary, private copy of the freshly compiled a.cmo? probably better than just updating the .cmo as a side effect.

@vicuna
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vicuna commented Jun 27, 2017

Comment author: @xavierleroy

I am unable to reproduce the problem, either with the normal toplevel "ocaml" nor with "utop".

If you have a shell script that reproduces the problem using only "ocaml" (because "utop" is a separate project), please post it here and we'll investigate some more.

@vicuna vicuna closed this as completed Jun 27, 2017
@vicuna
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vicuna commented Jun 27, 2017

Comment author: nbb

ok, i'll first make a utop example and then see for ocaml -- should have done that from the start...

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