[Mono-bugs] [Bug 633312] New: ilasm2 /debug crashes with System.IndexOutOfRangeException

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Fri Aug 20 14:31:50 EDT 2010



           Summary: ilasm2 /debug crashes with
    Classification: Mono
           Product: Mono: Compilers
           Version: 2.6.x
          Platform: i686
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: IL assembler
        AssignedTo: jankit at novell.com
        ReportedBy: baryluk at smp.if.uj.edu.pl
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---

Created an attachment (id=384544)
 --> (http://bugzilla.novell.com/attachment.cgi?id=384544)
Output of dnet for postinc_2.d

Description of Problem:

I used simple D2 program, to test it:

// postinc_2.d
void main() {              
   for (int i; i != 3; i++)

Compiled it using dnet compiler to il (attached), and then used ilasm2 to
compile it to exe.

$ ilasm2 postinc_2.d               # works
$ ilasm2 /debug postinc_2.d        # crash

Assembling 'postinc_2.il' , no listing file, to exe --> 'postinc_2.exe'

Unhandled Exception: System.IndexOutOfRangeException: Array index is out of
  at Mono.ILASM.MethodDef.GetLocalVars () [0x00000] in <filename unknown>:0 
  at Mono.ILASM.SourceMethod.Write
(Mono.CompilerServices.SymbolWriter.MonoSymbolWriter writer) [0x00000] in
<filename unknown>:0 
  at Mono.ILASM.SymbolWriter.Write (Guid guid) [0x00000] in <filename
  at Mono.ILASM.CodeGen.Write () [0x00000] in <filename unknown>:0 
  at Mono.ILASM.Driver+DriverMain.Run () [0x00000] in <filename unknown>:0 

Even if dnet compiler is producing bogus il file, ilasm2 should not crash.

How often does this happen? 

Additional Information:
Using Debian sid.

Both mono 2.4.0 and 2.6.3 have this behaviour.

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