[Mono-bugs] [Bug 24772] New - MCS miscompiles certain loops

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Changed by crichton@gimp.org.

http://bugzilla.ximian.com/show_bug.cgi?id=24772

--- shadow/24772	Wed May 15 14:03:20 2002
+++ shadow/24772.tmp.26631	Wed May 15 14:03:20 2002
@@ -0,0 +1,84 @@
+Bug#: 24772
+Product: Mono/MCS
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: Misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: crichton@gimp.org               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: MCS miscompiles certain loops
+
+MCS miscompiles the following code:
+
+using System;
+
+namespace test
+{
+        class test
+        {
+                public static void Main()
+                {
+                        int i,j;
+                        float[][] a;
+                        a = new float[20][];
+                        a[0] = new float[20];
+                        a[1] = new float[20];
+                        a[2] = new float[20];
+                        int dim = 2, ch = 2;
+                        int chptr = 0;
+
+                        for(i=0; i<16;)
+                        {
+                                Console.Error.WriteLine("i: "+i);
+                                for(j=0; j < dim; j++)
+                                {
+                                        a[chptr++][i]+=6.022f;
+                                        if(chptr == ch)
+                                        {
+                                                chptr = 0;
+                                                i++;
+                                        }
+                                }
+                        }
+                }
+        }
+}
+
+MCS output:
+mono ./test.exe 
+i: 0
+i: 2
+i: 4
+i: 6
+i: 8
+i: 10
+i: 12
+i: 14
+RESULT: 0
+
+MS runtime:
+$ ./test.exe
+i: 0
+i: 1
+i: 2
+i: 3
+i: 4
+i: 5
+i: 6
+i: 7
+i: 8
+i: 9
+i: 10
+i: 11
+i: 12
+i: 13
+i: 14
+i: 15