[Mono-bugs] [Bug 44468][Nor] New - user-defined implicit conversions with params fails

bugzilla-daemon@rocky.ximian.com bugzilla-daemon@rocky.ximian.com
Tue, 10 Jun 2003 23:00:54 -0400 (EDT)


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Changed by timsuth@ihug.co.nz.

http://bugzilla.ximian.com/show_bug.cgi?id=44468

--- shadow/44468	Tue Jun 10 23:00:54 2003
+++ shadow/44468.tmp.12401	Tue Jun 10 23:00:54 2003
@@ -0,0 +1,48 @@
+Bug#: 44468
+Product: Mono/MCS
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: Misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: timsuth@ihug.co.nz               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: user-defined implicit conversions with params fails
+
+For the following code, mcs (0.23.0.0, debianplanet package on woody) 
+gives the error
+  "Problem.cs(17) error CS-0006: Could not find any applicable function for    
+  this argument list"
+
+Microsoft's compiler successfully compiles the code.
+
+I have a method with a "params" parameter (variable arguments collected
+into an array), and am then calling it in a way which requires my
+user-defined "implicit" conversion to be done.
+
+class Problem {
+        string somedata;
+
+        public Problem(string somedata) {
+                this.somedata = somedata;
+        }
+        public static implicit operator Problem(int x) {
+                return new Problem("" + x);
+        }
+
+        public static int Multi(int first, params Problem[] rest) {
+                return rest.Length;
+        }
+
+        public static void Main(string[] args) {
+                Problem[] ps = new Problem[] { 1, 2, 3 }; // ok
+                Multi(1, 2, 3, 4); // fails to compile
+        }
+}