Hi, I am trying to track down a very odd bug that only occurs when it is
built on one machine. I try to calculate the width of a piece of string
(needed to calculate the width of a button). On one PC upto 2 letters
are missed from the text string, however on the other PC it works just
fine. I have ILDASM'd the function in question and wondered if anyone
could tell me why the last but one line is "?L_0066:  ldloc.0"" instead
of "IL_0066:  ldloc.0"??

If that isn't the issue, does anyone have any ideas as to why the two
compilers would generate code sufficiently different to cause a bug?
(It definately works 100% on my PC, but causes the bug if built on a
different PC with Visual C# Express on)



VISUAL C# EXPRESS



   .method public hidebysig instance int32
           CalculateRequiredWidth() cil managed
   {
     // Code size       104 (0x68)
     .maxstack  6
     .locals init (int32 V_0,
              class [System.Drawing]System.Drawing.Graphics V_1,
              class [System.Drawing]System.Drawing.StringFormat V_2,
              valuetype [System.Drawing]System.Drawing.SizeF V_3,
              valuetype
[System.Windows.Forms]System.Windows.Forms.Padding V_4)
     IL_0000:  ldc.i4.m1
     IL_0001:  stloc.0
     IL_0002:  ldarg.0
     IL_0003:  call       instance class
[System.Drawing]System.Drawing.Graphics
[System.Windows.Forms]System.Windows.Forms.Control::CreateGraphics()
     IL_0008:  stloc.1
     .try
     {
       IL_0009:  ldarg.0
       IL_000a:  call       instance class
[System.Drawing]System.Drawing.StringFormat
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::GetStringFormatFromTitleButton()
       IL_000f:  stloc.2
       IL_0010:  ldloc.1
       IL_0011:  ldarg.0
       IL_0012:  ldfld      class
Softease.Podium.Controls.MinimisedToolStripTitleButton
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::titleButton
       IL_0017:  callvirt   instance string
[System.Windows.Forms]System.Windows.Forms.Control::get_Text()
       IL_001c:  ldarg.0
       IL_001d:  ldfld      class
Softease.Podium.Controls.MinimisedToolStripTitleButton
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::titleButton
       IL_0022:  callvirt   instance class
[System.Drawing]System.Drawing.Font
[System.Windows.Forms]System.Windows.Forms.Control::get_Font()
       IL_0027:  ldc.i4.0
       IL_0028:  ldc.i4.0
       IL_0029:  newobj     instance void
[System.Drawing]System.Drawing.Point::.ctor(int32,

               int32)
       IL_002e:  call       valuetype
[System.Drawing]System.Drawing.PointF
[System.Drawing]System.Drawing.Point::op_Implicit(valuetype
[System.Drawing]System.Drawing.Point)
       IL_0033:  ldloc.2
       IL_0034:  callvirt   instance valuetype
[System.Drawing]System.Drawing.SizeF
[System.Drawing]System.Drawing.Graphics::MeasureString(string,


class [System.Drawing]System.Drawing.Font,


valuetype [System.Drawing]System.Drawing.PointF,


class [System.Drawing]System.Drawing.StringFormat)
       IL_0039:  stloc.3
       IL_003a:  ldloca.s   V_3
       IL_003c:  call       instance float32
[System.Drawing]System.Drawing.SizeF::get_Width()
       IL_0041:  conv.i4
       IL_0042:  ldc.i4.6
       IL_0043:  add
       IL_0044:  ldarg.0
       IL_0045:  ldfld      class
Softease.Podium.Controls.MinimisedToolStripTitleButton
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::titleButton
       IL_004a:  callvirt   instance valuetype
[System.Windows.Forms]System.Windows.Forms.Padding
[System.Windows.Forms]System.Windows.Forms.Control::get_Margin()
       IL_004f:  stloc.s    V_4
       IL_0051:  ldloca.s   V_4
       IL_0053:  call       instance int32
[System.Windows.Forms]System.Windows.Forms.Padding::get_Horizontal()
       IL_0058:  add
       IL_0059:  stloc.0
       IL_005a:  leave.s    IL_0066

     }  // end .try
     finally
     {
       IL_005c:  ldloc.1
       IL_005d:  brfalse.s  IL_0065

       IL_005f:  ldloc.1
       IL_0060:  callvirt   instance void
[mscorlib]System.IDisposable::Dispose()
       IL_0065:  endfinally
     }  // end handler
     ?L_0066:  ldloc.0
     IL_0067:  ret
   } // end of method GroupBoxMinimisedToolStrip::CalculateRequiredWidth



VISUAL STUDIO 2005



   .method public hidebysig instance int32
           CalculateRequiredWidth() cil managed
   {
     // Code size       104 (0x68)
     .maxstack  6
     .locals init ([0] int32 width,
              [1] class [System.Drawing]System.Drawing.Graphics gfx,
              [2] class [System.Drawing]System.Drawing.StringFormat format,
              [3] valuetype [System.Drawing]System.Drawing.SizeF titleSize,
              [4] valuetype
[System.Windows.Forms]System.Windows.Forms.Padding CS$0$0000)
     IL_0000:  ldc.i4.m1
     IL_0001:  stloc.0
     IL_0002:  ldarg.0
     IL_0003:  call       instance class
[System.Drawing]System.Drawing.Graphics
[System.Windows.Forms]System.Windows.Forms.Control::CreateGraphics()
     IL_0008:  stloc.1
     .try
     {
       IL_0009:  ldarg.0
       IL_000a:  call       instance class
[System.Drawing]System.Drawing.StringFormat
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::GetStringFormatFromTitleButton()
       IL_000f:  stloc.2
       IL_0010:  ldloc.1
       IL_0011:  ldarg.0
       IL_0012:  ldfld      class
Softease.Podium.Controls.MinimisedToolStripTitleButton
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::titleButton
       IL_0017:  callvirt   instance string
[System.Windows.Forms]System.Windows.Forms.Control::get_Text()
       IL_001c:  ldarg.0
       IL_001d:  ldfld      class
Softease.Podium.Controls.MinimisedToolStripTitleButton
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::titleButton
       IL_0022:  callvirt   instance class
[System.Drawing]System.Drawing.Font
[System.Windows.Forms]System.Windows.Forms.Control::get_Font()
       IL_0027:  ldc.i4.0
       IL_0028:  ldc.i4.0
       IL_0029:  newobj     instance void
[System.Drawing]System.Drawing.Point::.ctor(int32,

               int32)
       IL_002e:  call       valuetype
[System.Drawing]System.Drawing.PointF
[System.Drawing]System.Drawing.Point::op_Implicit(valuetype
[System.Drawing]System.Drawing.Point)
       IL_0033:  ldloc.2
       IL_0034:  callvirt   instance valuetype
[System.Drawing]System.Drawing.SizeF
[System.Drawing]System.Drawing.Graphics::MeasureString(string,


class [System.Drawing]System.Drawing.Font,


valuetype [System.Drawing]System.Drawing.PointF,


class [System.Drawing]System.Drawing.StringFormat)
       IL_0039:  stloc.3
       IL_003a:  ldloca.s   titleSize
       IL_003c:  call       instance float32
[System.Drawing]System.Drawing.SizeF::get_Width()
       IL_0041:  conv.i4
       IL_0042:  ldc.i4.6
       IL_0043:  add
       IL_0044:  ldarg.0
       IL_0045:  ldfld      class
Softease.Podium.Controls.MinimisedToolStripTitleButton
Softease.Podium.Controls.GroupBoxMinimisedToolStrip::titleButton
       IL_004a:  callvirt   instance valuetype
[System.Windows.Forms]System.Windows.Forms.Padding
[System.Windows.Forms]System.Windows.Forms.Control::get_Margin()
       IL_004f:  stloc.s    CS$0$0000
       IL_0051:  ldloca.s   CS$0$0000
       IL_0053:  call       instance int32
[System.Windows.Forms]System.Windows.Forms.Padding::get_Horizontal()
       IL_0058:  add
       IL_0059:  stloc.0
       IL_005a:  leave.s    IL_0066

     }  // end .try
     finally
     {
       IL_005c:  ldloc.1
       IL_005d:  brfalse.s  IL_0065

       IL_005f:  ldloc.1
       IL_0060:  callvirt   instance void
[mscorlib]System.IDisposable::Dispose()
       IL_0065:  endfinally
     }  // end handler
     IL_0066:  ldloc.0
     IL_0067:  ret
   } // end of method GroupBoxMinimisedToolStrip::CalculateRequiredWidth

OK, after a quick test with VS 2005 on the other PC, it turns out the IL
code is exactly the same. So how come on one machine I get local
variables called V_1, V_2 etc, and on the other machine i get the actual
variable names? What could be causing the differences between the two
sets of intermediate code?

Convertin Double value to DateTime
Randomize problem
Could not load type 'System.Web.Security.AccessRoleProvider'
how to install .NET Framework 2.0 unattended using VS.NET Setup Project Template
ERROR: The state information is invalid for this page and might be corrupted