[Mono-bugs] [Bug 59909][Wis] Changed - passing classes to C library functions doesn't allow modification

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Changed by mathpup@mylinuxisp.com.

http://bugzilla.ximian.com/show_bug.cgi?id=59909

--- shadow/59909	2004-06-10 16:53:07.000000000 -0400
+++ shadow/59909.tmp.24142	2004-06-10 23:39:19.000000000 -0400
@@ -43,6 +43,17 @@
 Created an attachment (id=8100)
 an example that doesn't work with mcs
 
 
 ------- Additional Comments From vargaz@freemail.hu  2004-06-10 16:53 -------
 -> runtime
+
+------- Additional Comments From mathpup@mylinuxisp.com  2004-06-10 23:39 -------
+I noticed that inserting an OutAttribute in front of the parameter 
+for the P/Invoke declaration works around the problem: 
+ 
+private static extern void testfn([Out] RefInt i) 
+ 
+So the mechanism for copying the data back from the temporary copy in 
+unmanaged storage to the managed class is there. It just isn't being 
+used without the OutAttribute. 
+