[Mono-bugs] [Bug 43284][Nor] New - Mono warns of bbsplit and then segfaults

bugzilla-daemon@rocky.ximian.com bugzilla-daemon@rocky.ximian.com
Mon, 19 May 2003 03:51:17 -0400 (EDT)


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Changed by mathpup@mylinuxisp.com.

http://bugzilla.ximian.com/show_bug.cgi?id=43284

--- shadow/43284	Mon May 19 03:51:17 2003
+++ shadow/43284.tmp.21137	Mon May 19 03:51:17 2003
@@ -0,0 +1,66 @@
+Bug#: 43284
+Product: Mono/Runtime
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: mathpup@mylinuxisp.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Mono warns of bbsplit and then segfaults
+
+Description of Problem: 
+ 
+The following code causes the Mono runtime to warn about a failed basic block split 
+and then to segfault. 
+ 
+.assembly Testing{} 
+.class public Testing { 
+.method public static int32 main() { 
+.entrypoint 
+.maxstack	8 
+	ldc.i4	0 
+L1: 
+        brzero L2 
+        ldc.i4 0 
+        ret 
+L2: 
+        ldc.i4	1 
+        br	L1 
+} 
+} 
+ 
+ 
+Steps to reproduce the problem: 
+1. Assemble: ilasm bbsplit.il 
+2. Run: mono bbsplit.exe 
+ 
+ 
+Actual Results: 
+ 
+Mono prints 
+** (switch.exe:16684): WARNING **: bblock split failed in Testing::main 
+ 
+Segmentation fault 
+ 
+ 
+Expected Results: 
+ 
+No output 
+ 
+ 
+How often does this happen?  
+ 
+Always 
+ 
+ 
+Additional Information: 
+ 
+Works with Rotor