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Meaningless error message #3837

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vicuna opened this issue Sep 29, 2002 · 3 comments
Closed

Meaningless error message #3837

vicuna opened this issue Sep 29, 2002 · 3 comments
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@vicuna
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vicuna commented Sep 29, 2002

Original bug ID: 1412
Reporter: administrator
Status: closed
Resolution: fixed
Priority: normal
Severity: minor
Category: ~DO NOT USE (was: OCaml general)

Bug description

Objective Caml version 3.06

class foo = object method get = `Foo end;;

Some type variables are unbound in this type:
class foo : object method get : [> Foo] end The method get has type [> Foo] where .. is unbound

The ellipsis is probably hidden behind the ">" sign. In
which case the error message is a little obscure. If it
means anything else, then it is completely obscure.

Alex
@vicuna
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vicuna commented Jul 22, 2003

Comment author: administrator

class foo = object method get = `Foo end;;

Some type variables are unbound in this type:
class foo : object method get : [> Foo] end The method get has type [> Foo] where .. is unbound

This was indeed confusing.
The new message is
The method get has type [> `Foo ] as 'a where 'a is unbound
which at least gives an explicit anchor to the problem.

Jacques

@vicuna
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vicuna commented Jul 22, 2003

Comment author: administrator

Changed message on 2003-07-22 (JG)

@vicuna vicuna closed this as completed Jul 22, 2003
@vicuna
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vicuna commented Jul 22, 2003

Comment author: administrator

Jacques Garrigue wrote:

class foo = object method get = `Foo end;;

Some type variables are unbound in this type:
class foo : object method get : [> Foo] end The method get has type [> Foo] where .. is unbound

This was indeed confusing.
The new message is
The method get has type [> `Foo ] as 'a where 'a is unbound
which at least gives an explicit anchor to the problem.

Jacques

Definitely better.

I can't wait to get my hands on Ocaml 3.07!

Alex

@vicuna vicuna mentioned this issue Mar 14, 2019
Closed
@vicuna vicuna added the bug label Mar 19, 2019
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@vicuna