[Mono-bugs] [Bug 75784][Wis] New - Calling ParameterInfo.GetCustomAttributes can cause an unmanaged memory leak

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Changed by will at cambia.com.

http://bugzilla.ximian.com/show_bug.cgi?id=75784

--- shadow/75784	2005-08-11 11:13:17.000000000 -0400
+++ shadow/75784.tmp.25743	2005-08-11 11:13:17.000000000 -0400
@@ -0,0 +1,76 @@
+Bug#: 75784
+Product: Mono: Runtime
+Version: 1.1
+OS: other
+OS Details: Fedora Core release 2 (Tettnang)
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: misc
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: will at cambia.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Calling ParameterInfo.GetCustomAttributes can cause an unmanaged memory leak
+
+Description of Problem:
+
+Compile and run the following program in Mono 1.1.8:
+
+using System;
+using System.Reflection;
+
+namespace LeakMaker {
+    enum ValueEnum {
+        False,
+        True
+    }
+
+    [AttributeUsage(AttributeTargets.Parameter)]
+    class TestAttribute : Attribute {
+        public TestAttribute() {
+            _val = ValueEnum.False;
+        }
+
+        private ValueEnum _val;
+
+        public ValueEnum Value {
+            get { return _val; }
+            set { _val = value; }
+        }
+    }
+    interface IMyInterface {
+        int MyMethod(
+            [Test(Value=ValueEnum.True)] int myparam
+        );
+    }
+    class MainClass {
+        static void Main(string[] args) {
+            MethodInfo mi = typeof(IMyInterface).GetMethod("MyMethod");
+            ParameterInfo pi = mi.GetParameters()[0];
+            while (true) {
+                pi.GetCustomAttributes(typeof(TestAttribute), true);
+            }
+        }
+    }
+}
+
+Actual Results:
+
+All available memory on the system is used up very quickly.
+
+Expected Results:
+
+The program would run indefinitely.
+
+How often does this happen? 
+
+Every time.
+
+Additional Information:
+
+Inserting a call to GC.GetTotalMemory shows the managed heap size remains 
+constant.