Compiler Bug when generating data.

Compiler Bug when generating data. by Tom van Dijck

Closed

as Fixed

Type:	Bug
ID:	582063
Opened:	7/31/2010 3:00:56 PM
Access Restriction:	Public

Workaround(s)

view

User(s) can reproduce this bug

It appears that if I define static data that maps onto a 'struct' I can get errors in the generated output... But only, if I do so in a dll, and in release mode.

Details (expand)

Visual Studio 2010

Included is a Visual Studio 2008 Project, which reproduces the error in both Visual Studio 2008 and 2010. Just build and run in debug, print the output... then build and run in release, print the output, and note the difference, where it would be expected that both release and debug output the exact same.

So far I've really only been able to repro it with this specific struct definition and only in a dll and only in release builds.. adding #pragma optimize(off) doesn't help.

English

Windows 7

English

MinSlot: 0
MaxSlot: 1
DataSize: 16
Alignment: 16
StringTableOffset: 160
StringTableLength: 32
Reordered: 0
Native: 1
Hash: 0x00000001
- LayoutHash: 0xf10a1000
- ElementSize: 4
- Offset: 0
- Name: 0
- Count: 9
- Flags: 0
- ElementAlign: 4
- RLE: 0
- LayoutHash: 0xf10a1000
- ElementSize: 4
- Offset: 0
- Name: 4
- Count: 11
- Flags: 0
- ElementAlign: 4
- RLE: 0

MinSlot: 0
MaxSlot: 1
DataSize: 16
Alignment: 16
StringTableOffset: 160
StringTableLength: 32
Reordered: 0
Native: 1
Hash: 0x00000001
- LayoutHash: 0xf10a1000
- ElementSize: 4
- Offset: 0
- Name: 9
- Count: 1
- Flags: 0
- ElementAlign: 4
- RLE: 2
- LayoutHash: 0xf10a1000
- ElementSize: 4
- Offset: 4
- Name: 11
- Count: 1
- Flags: 0
- ElementAlign: 4
- RLE: 1

File Name	Submitted By	Submitted On	File Size
datacompilebug.zip	Tom van Dijck	7/31/2010	32 KB
datacompilebug.zip	Tom van Dijck	7/31/2010	32 KB

Posted by Microsoft on 8/16/2010 at 5:51 PM

Hi. Thanks for reporting this bug!

We can reproduce the issue and are working on a fix.

Meanwhile, you can workaround this issue by using pragma optimize directive to selectively disable the optimizer.

MSDN documentation is here http://msdn.microsoft.com/en-us/library/chh3fb0k.aspx

and you will add pragma around the definition of your struct like this:

#pragma optimize("",off)

static NativeVectorLayout gLayoutVector2 = { ... };

#pragma optimize("",on)

Thanks again for your report
Seunghun Thomas Lee

Posted by Microsoft on 8/2/2010 at 1:01 AM

Thanks for your feedback. We are routing this issue to the appropriate group within the Visual Studio Product Team for triage and resolution. These specialized experts will follow-up with your issue.

Posted by Microsoft on 7/31/2010 at 5:09 PM

Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com)