[Mono-bugs] [Bug 77442][Maj] New - [GMCS] call to a generic method on null interface field causes SIGSEGV

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Changed by atsushi at ximian.com.

http://bugzilla.ximian.com/show_bug.cgi?id=77442

--- shadow/77442	2006-02-01 23:29:33.000000000 -0500
+++ shadow/77442.tmp.15583	2006-02-01 23:29:33.000000000 -0500
@@ -0,0 +1,83 @@
+Bug#: 77442
+Product: Mono: Runtime
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Major
+Component: misc
+AssignedTo: martin at ximian.com                            
+ReportedBy: atsushi at ximian.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: [GMCS] call to a generic method on null interface field causes SIGSEGV
+
+The runtime causes SIGSEGV when call to a generic method on a field
+happens, where the type of the field is an interface.
+
+It should report NullReferenceException.
+
+---- repro ----
+using System;
+
+interface ITest
+{
+	void Foo<T> ();
+	void Bar ();
+}
+
+class Test : ITest
+{
+	public void Foo<T> () {}
+
+	public void Bar () {}
+
+	//Test test; // this is OK
+	ITest test;
+
+	public static void Main ()
+	{
+		//new Test ().test.Bar (); // this is OK
+		new Test ().test.Foo<int> ();
+	}
+}
+
+
+Actual Results:
+
+=================================================================
+Got a SIGSEGV while executing native code. This usually indicates
+a fatal error in the mono runtime or one of the native libraries
+used by your application.
+=================================================================
+
+Stacktrace:
+
+in (wrapper managed-to-native)
+System.Object:__icall_wrapper_compile_generic_met
+hod (object,intptr,intptr) <0x4>
+in (wrapper managed-to-native)
+System.Object:__icall_wrapper_compile_generic_met
+hod (object,intptr,intptr) <0x8d>
+in Test:Main () <0x2d>
+in (wrapper runtime-invoke) System.Object:runtime_invoke_void
+(object,intptr,int
+ptr,intptr) <0x6df149e7>
+
+Expected Results:
+
+NullReferenceException in managed area should happen.
+
+How often does this happen? 
+
+consistently.
+
+Additional Information:
+
+This is a runtime problem (as the same code normally result in NRE in
+another runtime, and the same binary from another compiler result in the
+same on mono).