http://d.puremagic.com/issues/show_bug.cgi?id=9503

           Summary: [grammar] template declaration/instance must take one
                    or more arguments?
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: websites
        AssignedTo: nobody@puremagic.com
        ReportedBy: k.hara.pg@gmail.com


--- Comment #0 from Kenji Hara <k.hara.pg@gmail.com> 2013-02-12 19:59:33 PST ---
I found a funny grammar bug.

In current, nonterminal TemplateDeclaration symbol is defined as follows.

http://dlang.org/template
TemplateDeclaration:
  template TemplateIdentifier ( TemplateParameterList ) Constraintopt {
DeclDefs }

And, TemplateParameterList is defined as:

TemplateParameterList:
    TemplateParameter
    TemplateParameter ,
    TemplateParameter , TemplateParameterList

TemplateParameterList must consume one or more TemplateParameter, so we cannot declare zero-arg template declaration!

Of course it is possible with current compiler, so it's a grammar bug. Same problem is in TemplateMixinDeclaration.

Also, template instantiation grammar has similar problem. TemplateArgumentList must consume one or more arguments, so TemplateMixin and TemplateInstance cannot take zero arguments.

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Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull


--- Comment #1 from Kenji Hara <k.hara.pg@gmail.com> 2013-02-12 21:25:40 PST ---
https://github.com/D-Programming-Language/d-programming-language.org/pull/274

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Alex Rønne Petersen <alex@lycus.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alex@lycus.org
         Resolution|                            |FIXED


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--- Comment #2 from github-bugzilla@puremagic.com 2013-02-12 21:26:18 PST ---
Commits pushed to master at https://github.com/D-Programming-Language/d-programming-language.org

https://github.com/D-Programming-Language/d-programming-language.org/commit/2c34db6317318825ae9387e3954f65c06f2ac102
fix Issue 9503 - [grammar] template declaration/instance must take one or more
arguments?

- Define TemplateParameters and TemplateArguments, and use them as like
Parameters
- Function template and template constructor also couldn't take zero template
parameters.
  Moreover, DeclarationSuffix had been wrong, because TemplateParameterList
does not have both side parenthesis.

https://github.com/D-Programming-Language/d-programming-language.org/commit/8de780bf1457fd8c9eca9e683cd6bb25fa140418 Merge pull request #274 from 9rnsr/fix9503

Issue 9503 - [grammar] template declaration/instance must take one or more arguments?

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