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Error message for an attempt to use a functor as a module is confusing #6410

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vicuna opened this issue May 11, 2014 · 1 comment
Closed

Error message for an attempt to use a functor as a module is confusing #6410

vicuna opened this issue May 11, 2014 · 1 comment
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@garrigue
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@vicuna
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vicuna commented May 11, 2014

Original bug ID: 6410
Reporter: @whitequark
Assigned to: @garrigue
Status: closed (set by @xavierleroy on 2015-12-11T18:26:54Z)
Resolution: fixed
Priority: normal
Severity: minor
Fixed in version: 4.02.0+dev
Category: ~DO NOT USE (was: OCaml general)
Monitored by: @gasche

Bug description

E.g.:

module Server(Backend: BACKEND) : sig .. end
let server = Block.Server.create backend sserver

results in the following error:

File "lib_test/test_block.ml", line 53, characters 16-35:
Error: Unbound value Block.Server.create

It would be much better if the error said that Block.Server is a functor, not a structure.
@vicuna
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vicuna commented May 11, 2014

Comment author: @garrigue

Fixed in trunk at revision 14790.

module F(X : sig end) = struct let x = 3 end;;
F.x;;
^^^
Error: The module F is a functor, not a structure

@vicuna vicuna closed this as completed Dec 11, 2015
@vicuna vicuna added the bug label Mar 20, 2019
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@garrigue @vicuna