--- Additional Comments From sethml at google dot com 2005-08-05 03:43
---
The C++ working group examined this issue in April as core language issue 488:
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#488
They tentatively concluded that type deduction should fail in this
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-05
03:48 ---
Reopening to ...
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Status|RESOLVED
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-05
03:48 ---
To suspend it as the DR is still in drafting.
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What|Removed |Added
--- Additional Comments From mark at codesourcery dot com 2005-08-05 03:49
---
Subject: Re: error: 'anonymous enum' is/uses anonymous type'
sethml at google dot com wrote:
--- Additional Comments From sethml at google dot com 2005-08-05 03:43
---
The C++ working group
--- Additional Comments From bangerth at dealii dot org 2005-03-26 22:53
---
Well, I wanted to give an inuitive reasoning.
On the other hand, how do you propose to make up a unique name if an
unnamed enum is used in two different translation units as a template
argument?
W.
--
bangerth at dealii dot org [EMAIL PROTECTED] writes:
| Well, I wanted to give an inuitive reasoning.
I understood that; I just don't think they are conclusive :-)
| On the other hand, how do you propose to make up a unique name if an
| unnamed enum is used in two different translation units
--- Additional Comments From gdr at integrable-solutions dot net
2005-03-27 03:18 ---
Subject: Re: error: 'anonymous enum' is/uses anonymous type'
bangerth at dealii dot org [EMAIL PROTECTED] writes:
| Well, I wanted to give an inuitive reasoning.
I understood that; I just don't
--- Additional Comments From gdr at integrable-solutions dot net
2005-03-26 04:20 ---
Subject: Re: error: 'anonymous enum' is/uses anonymous type'
bangerth at dealii dot org [EMAIL PROTECTED] writes:
| Intuitively, C++ treats unnamed enums differently than named ones, because
| in
--- Additional Comments From caolanm at redhat dot com 2005-03-23 11:53
---
The workaround is trivial. But I'm still confused as to what exactly causes gcc
to treat unnamed enums so much differently that named ones. It would be great if
I could get some clarity on this. I have a handful
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-03-23
16:57 ---
(In reply to comment #4)
The workaround is trivial. But I'm still confused as to what exactly causes
gcc
to treat unnamed enums so much differently that named ones. It would be great
if
I could get
--- Additional Comments From bangerth at dealii dot org 2005-03-23 18:53
---
Intuitively, C++ treats unnamed enums differently than named ones, because
in templates the function/class name has to be mangled, and will contain
the name of the template arguments. If the template argument
--- Additional Comments From caolanm at redhat dot com 2005-03-23 19:12
---
Sounds reasonable, but it's not the case that the compiler should just silently
not consider anonymous enums as candidates for template argument matching ?
--
--- Additional Comments From bangerth at dealii dot org 2005-03-23 19:24
---
That has been subject to discussion (i.e. whether the attempt to use an
unnamed enum as a template argument should just silently fail as a
substitution failure). However, it has been decided that this is a
--- Additional Comments From mark at codesourcery dot com 2005-03-23 19:28
---
Subject: Re: error: 'anonymous enum' is/uses anonymous type'
bangerth at dealii dot org wrote:
--- Additional Comments From bangerth at dealii dot org 2005-03-23 19:24
---
That has been subject
--- Additional Comments From bangerth at dealii dot org 2005-03-23 21:56
---
Related PRs are: PR 19404, and in particular PR 17413. The latter is the one
I was thinking of.
W.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20589
--- Additional Comments From caolanm at redhat dot com 2005-03-22 15:46
---
Created an attachment (id=8433)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8433action=view)
example
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20589
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-03-22
16:09 ---
I think this is invalid code.
Mark I think you changed the front-end code to reject this, can you comment on
validness of the code
attached in this bug?
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What|Removed
--- Additional Comments From mmitchel at gcc dot gnu dot org 2005-03-22
16:16 ---
Yes, this is invalid code, as the template parameters involve an anonymous type.
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