Can't "alias this" to a template instantiation

[dlangBugzillaToGithub]

Vladimir Panteleev (@CyberShadow) reported this on 2014-02-19T15:43:46Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=12206

CC List

• RazvanN
• Marc Schütz

Description

template T()
{
	void foo() {}
}

struct S
{
	alias t = T!();
	alias t this;
}

void main()
{
	S s;
	s.foo();
}

[dlangBugzillaToGithub]

schuetzm commented on 2015-03-15T16:33:45Z

Still there in DMD master. The error message is:

xx.d(15): Error: expression has no value

[dlangBugzillaToGithub]

razvan.nitu1305 commented on 2018-10-19T14:01:25Z

This is a weird case. The alias is part of the struct, but the actual function is not. I would say that the correct behavior is the current one:

Error : no property foo for type S.

Note that writing s.t.foo works. In my opinion, this is the real bug.