810 – Cannot forward reference template

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Issue 810 - Cannot forward reference template

Summary: Cannot forward reference template

Status:	RESOLVED FIXED
Alias:	None
Product:	D
Classification:	Unclassified
Component:	dmd (show other issues)
Version:	D1 (retired)
Hardware:	x86 All
Importance :	P3 normal
Assignee:	No Owner
URL:
Keywords:	rejects-valid
Depends on:
Blocks:	340 945
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See Also:
Reported:	2007年01月07日 05:42 UTC by Matti Niemenmaa
Modified:	2014年02月15日 13:13 UTC (History)
CC List:	2 users (show)

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Description Matti Niemenmaa 2007年01月07日 05:42:55 UTC

They don't get much shorter than this:
Template!(int) stack;
template Template(T) {}
Flip the two lines and the code compiles.

Comment 1 Thomas Kühne 2007年04月05日 05:27:54 UTC

Added to DStress as
http://dstress.kuehne.cn/compile/f/forward_reference_18_C.d
http://dstress.kuehne.cn/compile/f/forward_reference_18_D.d

Comment 2 Don 2009年08月19日 07:23:24 UTC

This test case is faulty (as are the Dstress cases), it should be:
Template!(int) stack;
template Template(T) { alias int Template; }
This failed in 1.041, but is working in 1.046 and 2.031. 
I bet this was fixed by bug#106 in 1.046.

Comment 3 Matti Niemenmaa 2009年08月19日 09:49:00 UTC

Right you are; I checked and indeed, flipping the two lines doesn't make the code acceptable even with DMD 1.00. My bad, I presumably changed it from "class" to "template" at the last minute.
Confirmed that this is indeed fixed with 1.046: it didn't work in 1.045. Happy days! My code is riddled with "waiting on #810"-type comments.