[ubuntu-mono] [Bug 755373] Re: Mono Runtime crashes when trying to emit opcode

[Dylan Borg]

There was an error in InstructionHelper class.

** Changed in: dnr
       Status: Confirmed => Fix Committed

** Changed in: dnr
    Milestone: None => 11.2.5

** Changed in: dylandotnet
       Status: Confirmed => Fix Committed

** Changed in: dylandotnet
    Milestone: None => 11.2.5

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https://bugs.launchpad.net/bugs/755373

Title:
  Mono Runtime crashes when trying to emit opcode

Status in dylan.NET.Reflection:
  Fix Committed
Status in dylan.NET:
  Fix Committed
Status in “mono” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: mono-devel

  When I tryy to use ILGenerator.Emit the Mono runtime fails saying
  there is an assertion fail in method-to-ir.c.

  Here is a console extract:
  dylan at ubuntu:/media/MOBEXTHDD/Code/dylannet$ mono ./compiler/dnc.exe
  firstapp.txt
  dylan.NET Compiler v. 11.2.4 for Microsoft (R) .NET Framework (R) v. 3.5 SP1
                             and Novell Mono v. 2.6.7 /v. 2.10
  Copyright (C) Dylan Borg 2010
  Now Lexing: firstapp.txt...Done.
  Now Parsing: firstapp.txt...Done.
  Referencing Assembly: compiler/mscorlib.dll
  Referencing Assembly: compiler/System.dll
  Referencing Assembly: compiler/System.Core.dll
  Referencing Assembly: compiler/System.Data.dll
  Referencing Assembly: compiler/System.Data.DataSetExtensions.dll
  Referencing Assembly: compiler/System.Xml.dll
  Referencing Assembly: compiler/System.Xml.Linq.dll
  Referencing Assembly: compiler/System.Windows.Forms.dll
  Referencing Assembly: compiler/Microsoft.VisualBasic.dll
  Importing Namespace: Microsoft.VisualBasic
  Importing Namespace: System
  Importing Namespace: System.Reflection
  Importing Namespace: System.Collections
  Importing Namespace: System.Collections.Generic
  Importing Namespace: System.Data
  Importing Namespace: System.Diagnostics
  Importing Namespace: System.Linq
  Importing Namespace: System.Xml
  Importing Namespace: System.Xml.Linq
  Importing Namespace: System.Windows.Forms
  Beginning Assembly: firstappg2
  Adding Class: firstappg2.Module1
  Adding Method: main
  **
  ERROR:method-to-ir.c:11047:mono_spill_global_vars: assertion failed:
  (store_opcode != OP_STOREV_MEMBASE)
  Stacktrace:

    at dylan.NET.Reflection.ILEmitter.EmitRet () <0xffffffff>
    at dylan.NET.Reflection.ILEmitter.EmitRet () <0x00017>
    at dylan.NET.Tokenizer.CodeGen.StmtReader.Read
  (dylan.NET.Tokenizer.AST.Stmts.Stmt) <0x00cf8>
    at dylan.NET.Tokenizer.CodeGen.CodeGenerator.EmitMSIL
  (dylan.NET.Tokenizer.AST.Stmts.StmtSet) <0x00082>
    at dylan.NET.Compiler.Module1.main (string[]) <0x00132>
    at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object
  (object,intptr,intptr,intptr) <0x00043>

  Native stacktrace:

      mono() [0x80d4d0b]
      [0x44640c]
      /lib/libc.so.6(abort+0x182) [0x14ce42]
      /lib/libglib-2.0.so.0(g_assertion_message+0x15f) [0x7224af]
      /lib/libglib-2.0.so.0(+0x65aed) [0x722aed]
      mono() [0x806862b]
      mono() [0x8060088]
      mono() [0x80606bf]
      mono() [0x806123e]
      mono() [0x80d8b4e]
      [0x945066]
      [0x2d2341]
      [0x2d15ab]
      [0x33a2db]
      [0x33a384]
      mono() [0x8061328]
      mono(mono_runtime_invoke+0x40) [0x813c890]
      mono(mono_runtime_exec_main+0xde) [0x81403de]
      mono(mono_runtime_run_main+0x112) [0x81406e2]
      mono(mono_main+0x1679) [0x80b2f99]
      mono() [0x8059385]
      /lib/libc.so.6(__libc_start_main+0xe7) [0x135ce7]
      mono() [0x80592c1]

  Debug info from gdb:

  Could not attach to process.  If your uid matches the uid of the target
  process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
  again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
  ptrace: Operation not permitted.

  =================================================================
  Got a SIGABRT while executing native code. This usually indicates
  a fatal error in the mono runtime or one of the native libraries 
  used by your application.
  =================================================================

  Aborted
  dylan at ubuntu:/media/MOBEXTHDD/Code/dylannet$ 

  1.Using Ubuntu 10.10 Maverick Meerkat
  2.Using mono-devel 2.6.7-3ubuntu1
  3.I expected all opcodes to be emitted without crashes(all works fine on MS .NET)
  4.The system crashed because of an assertion fail.