[Mono-bugs] [Bug 670479] New: IL negative code gives wrong result on mono while works on .NET

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https://bugzilla.novell.com/show_bug.cgi?id=670479

https://bugzilla.novell.com/show_bug.cgi?id=670479#c0


           Summary: IL negative code gives wrong result on mono while
                    works on .NET
    Classification: Mono
           Product: Mono: Runtime
           Version: 2.10.x
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: JIT
        AssignedTo: lupus at novell.com
        ReportedBy: ck at carlo-kok.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


Created an attachment (id=412919)
 --> (http://bugzilla.novell.com/attachment.cgi?id=412919)
exe and prism source

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US)
AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.237 Safari/534.10

the attached IL file (can't be compiled with C#) gives "Failed" on mono. The
problme part:



    IL_0015:  ldloc.2
    IL_0016:  ldc.i8     0x80000000
    IL_001f:  neg
    IL_0020:  clt

Original code (in Prism)
if (((not b) and ((number >= (-2147483648 as System.Int64)))) and ((number <=
(2147483647 as System.Int64)))) then

the middle match doesn't give the right result.

Reproducible: Always

Steps to Reproduce:
1. compile the il file or run the exe
2. look at the result
Actual Results:  
"Failed" on the conols

Expected Results:  
"Succeed" on the console

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