[Mono-bugs] [Bug 52092][Nor] New - ldftn must not compile the method
bugzilla-daemon@bugzilla.ximian.com
bugzilla-daemon@bugzilla.ximian.com
Fri, 12 Dec 2003 05:02:44 -0500 (EST)
Please do not reply to this email- if you want to comment on the bug, go to the
URL shown below and enter your comments there.
Changed by lupus@ximian.com.
http://bugzilla.ximian.com/show_bug.cgi?id=52092
--- shadow/52092 2003-12-12 05:02:43.000000000 -0500
+++ shadow/52092.tmp.26980 2003-12-12 05:02:43.000000000 -0500
@@ -0,0 +1,57 @@
+Bug#: 52092
+Product: Mono/Runtime
+Version: unspecified
+OS: other
+OS Details:
+Status: NEW
+Resolution:
+Severity:
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs@ximian.com
+ReportedBy: lupus@ximian.com
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL:
+Cc:
+Summary: ldftn must not compile the method
+
+This test case:
+using System;
+
+class A {
+ static A () {
+ Console.WriteLine ("In A cctor");
+ }
+ public static void method () {
+ Console.WriteLine ("In A method");
+ }
+}
+
+delegate void DoIt ();
+
+class B {
+ static void Main () {
+ DoIt d = new DoIt (A.method);
+ Console.WriteLine ("Created delegate");
+ d ();
+ Console.WriteLine ("Invoked delegate");
+ }
+}
+
+prints (in mono):
+In A cctor
+Created delegate
+In A method
+Invoked delegate
+while it should print:Created delegate
+In A cctor
+In A method
+Invoked delegate
+
+The error is because we assume that a method is compiled just in time when
+it's first invoked and it that context we need to run the class cctor.
+But ldftn currently cause the method to be compiled even if it's not run
+until later.
+We need to use for ldftn the same mechanism used for tail calls: a jump
+trampoline is created that simply invokes the method.