[Mono-bugs] [Bug 72857][Wis] New - Dead code detection causes compile errors later on

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Changed by m_kretzschmar@gmx.net.

http://bugzilla.ximian.com/show_bug.cgi?id=72857

--- shadow/72857	2005-02-22 11:39:39.000000000 -0500
+++ shadow/72857.tmp.17575	2005-02-22 11:39:39.000000000 -0500
@@ -0,0 +1,47 @@
+Bug#: 72857
+Product: Mono: Compilers
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: C#
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: m_kretzschmar@gmx.net               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Dead code detection causes compile errors later on
+
+public class Foo
+{
+  public static void Main()
+  {
+    if (false)
+    {
+      int pos = -1;
+      for (int i = 0; i < 8; ++i)
+	if (i == 4)
+	{
+	  pos = i;
+	  break;
+	}      
+      System.Console.Write(pos);
+    }
+  }
+}
+
+$ mcs foo.cs
+foo.cs(6) warning CS0162: Unreachable code detected
+foo.cs(8) error CS0165: Use of unassigned local variable `i'
+foo.cs(9) error CS0165: Use of unassigned local variable `i'
+foo.cs(14) error CS0165: Use of unassigned local variable `pos'
+Compilation failed: 3 error(s), 1 warnings
+
+This is with the daily snapshot of 2005-02-21
+
+If you comment out the if (false), it compiles just fine. Of course, this
+is a pathological case, hence the low priority.