[Mono-bugs] [Bug 651940] New: Corrupt offset calculation of ble.s

Sun Nov 7 12:51:41 EST 2010

https://bugzilla.novell.com/show_bug.cgi?id=651940

https://bugzilla.novell.com/show_bug.cgi?id=651940#c0

           Summary: Corrupt offset calculation of ble.s
    Classification: Mono
           Product: Mono: Class Libraries
           Version: unspecified
          Platform: PC
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Cecil
        AssignedTo: jbevain at novell.com
        ReportedBy: philipp.paetzold at gmx.de
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---

Description of Problem:
found in the latest tarbal 10-07-2010

Steps to reproduce the problem:

// inject leave method hooks before every "ret"
for (int instructionIdx = methodDefinition.Body.Instructions.Count - 1;
instructionIdx >= 0; instructionIdx--)
{
    Instruction instruction = 
       methodDefinition.Body.Instructions[instructionIdx];
    if (instruction.OpCode == OpCodes.Ret)
    {
        worker.InsertBefore(instruction, leaveMethodLoadNameInstruction);
        worker.InsertAfter(instruction.Previous, callLeaveMethodInstruction);
    }
}

Actual Results:

[UNMODIFIED IL CODE]
method private hidebysig instance void ToolStripMenuEdit_Opening(object
sender, class [mscorlib]System.EventArgs e) cil managed
{
    .maxstack 2
    .locals init (
        [0] int32 num)
    L_0000: ldarg.0 
    L_0001: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_0006: callvirt instance class
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection
[System.Windows.Forms]System.Windows.Forms.ListView::get_SelectedIndices()
    L_000b: callvirt instance int32
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection::get_Count()
    L_0010: ldc.i4.0 
    L_0011: ble.s L_0078
    L_0013: ldarg.0 
    L_0014: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_0019: callvirt instance class
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection
[System.Windows.Forms]System.Windows.Forms.ListView::get_SelectedIndices()
    L_001e: callvirt instance int32
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection::get_Count()
    L_0023: ldc.i4.1 
    L_0024: ble.s L_0037
    L_0026: ldarg.0 
    L_0027: ldfld class
[System.Windows.Forms]System.Windows.Forms.ToolStripMenuItem
OptimatLogViewer.MainForm::ToolStripMenuItemToggleBookmark
    L_002c: ldstr "Lesezeichen \u00e4ndern"
    L_0031: callvirt instance void
[System.Windows.Forms]System.Windows.Forms.ToolStripItem::set_Text(string)
    L_0036: ret 
    L_0037: ldarg.0 
    L_0038: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_003d: callvirt instance class
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection
[System.Windows.Forms]System.Windows.Forms.ListView::get_SelectedIndices()
    L_0042: ldc.i4.0 
    L_0043: callvirt instance int32
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection::get_Item(int32)
    L_0048: stloc.0 
    L_0049: ldarg.0 
    L_004a: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_004f: ldloc.0 
    L_0050: callvirt instance bool
OptimatLogViewer.Controls.LogFileListView::IsBookmarked(int32)
    L_0055: brfalse.s L_0068
    L_0057: ldarg.0 
    L_0058: ldfld class
[System.Windows.Forms]System.Windows.Forms.ToolStripMenuItem
OptimatLogViewer.MainForm::ToolStripMenuItemToggleBookmark
    L_005d: ldstr "Lesezeichen entfernen"
    L_0062: callvirt instance void
[System.Windows.Forms]System.Windows.Forms.ToolStripItem::set_Text(string)
    L_0067: ret 
    L_0068: ldarg.0 
    L_0069: ldfld class
[System.Windows.Forms]System.Windows.Forms.ToolStripMenuItem
OptimatLogViewer.MainForm::ToolStripMenuItemToggleBookmark
    L_006e: ldstr "Lesezeichen hinzuf\u00fcgen"
    L_0073: callvirt instance void
[System.Windows.Forms]System.Windows.Forms.ToolStripItem::set_Text(string)
    L_0078: ret 
}

[MODIFIED IL CODE]

method private hidebysig instance void ToolStripMenuEdit_Opening(object
sender, class [mscorlib]System.EventArgs e) cil managed
{
    .maxstack 3
    .locals init (
        [0] int32 num)
    L_0000: ldstr "System.Void
OptimatLogViewer.MainForm::ToolStripMenuEdit_Opening(System.Object,System.EventArgs)"
    L_0005: call void [Profiler]Profiler.Profiler::EnterMethodHook(string)
    L_000a: ldarg.0 
    L_000b: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_0010: callvirt instance class
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection
[System.Windows.Forms]System.Windows.Forms.ListView::get_SelectedIndices()
    L_0015: callvirt instance int32
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection::get_Count()
    L_001a: ldc.i4.0 
    L_001b: ble.s L_ffffffa0
    L_001d: ldarg.0 
    L_001e: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_0023: callvirt instance class
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection
[System.Windows.Forms]System.Windows.Forms.ListView::get_SelectedIndices()
    L_0028: callvirt instance int32
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection::get_Count()
    L_002d: ldc.i4.1 
    L_002e: ble.s L_004b
    L_0030: ldarg.0 
    L_0031: ldfld class
[System.Windows.Forms]System.Windows.Forms.ToolStripMenuItem
OptimatLogViewer.MainForm::ToolStripMenuItemToggleBookmark
    L_0036: ldstr "Lesezeichen \u00e4ndern"
    L_003b: callvirt instance void
[System.Windows.Forms]System.Windows.Forms.ToolStripItem::set_Text(string)
    L_0040: ldstr "System.Void
OptimatLogViewer.MainForm::ToolStripMenuEdit_Opening(System.Object,System.EventArgs)"
    L_0045: call void [Profiler]Profiler.Profiler::LeaveMethodHook(string)
    L_004a: ret 
    L_004b: ldarg.0 
    L_004c: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_0051: callvirt instance class
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection
[System.Windows.Forms]System.Windows.Forms.ListView::get_SelectedIndices()
    L_0056: ldc.i4.0 
    L_0057: callvirt instance int32
[System.Windows.Forms]System.Windows.Forms.ListView/SelectedIndexCollection::get_Item(int32)
    L_005c: stloc.0 
    L_005d: ldarg.0 
    L_005e: ldfld class OptimatLogViewer.Controls.LogFileListView
OptimatLogViewer.MainForm::logFileListView
    L_0063: ldloc.0 
    L_0064: callvirt instance bool
OptimatLogViewer.Controls.LogFileListView::IsBookmarked(int32)
    L_0069: brfalse.s L_0086
    L_006b: ldarg.0 
    L_006c: ldfld class
[System.Windows.Forms]System.Windows.Forms.ToolStripMenuItem
OptimatLogViewer.MainForm::ToolStripMenuItemToggleBookmark
    L_0071: ldstr "Lesezeichen entfernen"
    L_0076: callvirt instance void
[System.Windows.Forms]System.Windows.Forms.ToolStripItem::set_Text(string)
    L_007b: ldstr "System.Void
OptimatLogViewer.MainForm::ToolStripMenuEdit_Opening(System.Object,System.EventArgs)"
    L_0080: call void [Profiler]Profiler.Profiler::LeaveMethodHook(string)
    L_0085: ret 
    L_0086: ldarg.0 
    L_0087: ldfld class
[System.Windows.Forms]System.Windows.Forms.ToolStripMenuItem
OptimatLogViewer.MainForm::ToolStripMenuItemToggleBookmark
    L_008c: ldstr "Lesezeichen hinzuf\u00fcgen"
    L_0091: callvirt instance void
[System.Windows.Forms]System.Windows.Forms.ToolStripItem::set_Text(string)
    L_0096: ldstr "System.Void
OptimatLogViewer.MainForm::ToolStripMenuEdit_Opening(System.Object,System.EventArgs)"
    L_009b: call void [Profiler]Profiler.Profiler::LeaveMethodHook(string)
    L_00a0: ret 
}

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