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Issue 7190 - Tuple length incorrect
Summary: Tuple length incorrect
Status: RESOLVED FIXED
Alias: None
Product: D
Classification: Unclassified
Component: dmd (show other issues)
Version: D2
Hardware: All All
: P2 normal
Assignee: No Owner
URL:
Keywords: patch, rejects-valid
Depends on:
Blocks:
 
Reported: 2011-12-31 08:26 UTC by Robert Clipsham
Modified: 2017-07-19 04:54 UTC (History)
1 user (show)

See Also:

Attachments
Files required to reproduce (1016 bytes, application/x-gzip)
2011-12-31 08:26 UTC, Robert Clipsham 		Details
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Description Robert Clipsham 2011-12-31 08:26:53 UTC 
Created attachment 1064 [details]
Files required to reproduce

When compiling the attached code ( https://gist.github.com/7faf1013f81ea96bfb89
), the following error is given:
----
serenity/core/Model.d(2): Error: static assert  "Article(1):
tuple((Article).id)"
example/models/HomeModel.d(10):        instantiated from here:
SqlitePersister!(Article)
----
Note that the code requires the following directory/file layout:
serenity
 ` core
     ` Model.d
     ` Controller.d
example
 ` controllers
     ` HomeController.d
 ` models
      ` HomeModel.d

And should be compiled with:
dmd -c example/controllers/HomeController.d example/models/HomeModel.d
Comment 1 Kenji Hara 2012-01-01 06:37:02 UTC 
This is a forward reference bug.

Workaround in core/Model.d:

 class SqlitePersister(T) {
+    static assert(T.sizeof);  // force running semantic of T
+                              // to resolve sizeof property
     static assert(T.tupleof.length > 0, T.stringof ~ `(` ~ (T.tupleof.length
                                             + '0') ~ `): ` ~ T.tupleof.stringof);
 }