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VB Forum / General 2 / July 2009vb6.exe is crashing on ntdll.dll when building executables.
Please advise, my vb6.exe is crashing on ntdll.dll when building executables .WinXP with all latest windows-updates applied. Windbg crash dump: HEAP[VB6.EXE]: Heap block at 0451DFB8 modified at 04521135 past requested size of 3175 (14c8.c10): Break instruction exception - code 80000003 (first chance) eax=0451dfb8 ebx=04521135 ecx=7c91ead5 edx=0013e5d7 esi=0451dfb8 edi=00003175 eip=7c90120e esp=0013e7d8 ebp=0013e7dc iopl=0 nv up ei pl nz na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000202 ntdll!DbgBreakPoint: 7c90120e cc int 3 Missing image name, possible paged-out or corrupt data. Missing image name, possible paged-out or corrupt data. Missing image name, possible paged-out or corrupt data. 0:000> k ChildEBP RetAddr 0013e7d4 7c96e139 ntdll!DbgBreakPoint 0013e7dc 7c95f38c ntdll!RtlpBreakPointHeap+0x28 0013e7f4 7c96e507 ntdll!RtlpCheckBusyBlockTail+0x76 0013e808 7c96f75e ntdll!RtlpValidateHeapEntry+0xa4 0013e87c 7c94bc4c ntdll!RtlDebugFreeHeap+0x97 0013e964 7c927573 ntdll!RtlFreeHeapSlowly+0x37 0013ea34 004791b1 ntdll!RtlFreeHeap+0xf9 0013ea60 00535a15 vb6!ErrLoadPropArrayElements+0x13c 0013ea88 0041c12b vb6!COMBO::LoadProp+0xa8 0013ead8 0041b00f vb6!ProcessPropArray+0x25b 0013ec54 0041a805 vb6!CioReadTextProperties+0x703 0013eda4 0041a573 vb6!ProcessTextControlBlock+0x197 0013edd4 0041a5f8 vb6!CioReadTextControls+0x2b 0013ee04 0041a5f8 vb6!CioReadTextControls+0xb0 0013ee34 0041a5f8 vb6!CioReadTextControls+0xb0 0013ee64 0041a5f8 vb6!CioReadTextControls+0xb0 0013ee94 0041a5f8 vb6!CioReadTextControls+0xb0 0013eec4 0041a5f8 vb6!CioReadTextControls+0xb0 0013eef4 0041a5f8 vb6!CioReadTextControls+0xb0 0013ef24 0041a3c9 vb6!CioReadTextControls+0xb0 > Please advise, my vb6.exe is crashing on ntdll.dll when building > executables > .WinXP with all latest windows-updates applied. > Windbg crash dump: Unfortunately, all that debug info is mostly worthless. You're gonna have to find out the line of code that's causing the crash and post that. If you can't reproduce this in the IDE, then you'll have to temporarily (or maybe permanently) add code into your program to help in narrowing down the code that's causing the crash (for example, write to a log file when procedures are entered and exited...when the log has an entered procedure but no exited procedure, you know the crash occured in that procedure...from that point, you can further add logging at the line level). Just guessing, but I'd bet it's an API function you're calling incorrectly. There's just not much anyone can probably assist with until you can post source code.  SignatureMike Hi Mike, unfortunately this is vb6.exe (not my app) crashing on "writing executable" time ,not running time.My solution is huge and has a lot of source files. How can I find out on compiling which function vb6.exe crashing ? There is no direct reference to ntdll.dll and error is not incorrect binding but vb6.exe heap crash on compiling. I wonder if there is hotfix for vb6.exe compiler/linker. > > Please advise, my vb6.exe is crashing on ntdll.dll when building > > executables [quoted text clipped - 13 lines] > There's just not much anyone can probably assist with until you can post > source code. > Hi Mike, > unfortunately this is vb6.exe (not my app) crashing on "writing executable" [quoted text clipped - 5 lines] > binding but vb6.exe heap crash on compiling. I wonder if there is hotfix for > vb6.exe compiler/linker. I just had this sort of problem an hour ago!! What the problem was For I = 0 to 51: text10(i).height = 300: next I There were only 12 text boxes!! somehow, just before compiling, I must have accidently overwritten '11' with '51', but that's all it took to crash the .exe compilation The fix I finally got to 'tools' 'options', 'general' and changed error trapping to "break on all errors". I normally have this set on, but I've only just set up this computer with VB6, and I didn't change the setting. Don't ask me why it crashed the compile as I didn't think that would happen. It also hung the IDE run, and that's when I started thinking about the error trapping. Once I fixed that, the IDE ran properly, and the compile worked as well It could be your fix. If it isn't :<, then at least you know one thing it isn't Graham I cannot add log, because it's vb6.exe IDE crashing on writing my app to .exe . vb6.exe running my application ok, but crashig on "writing executable". Solution is huge and has a lot of source files. How can I find out on writing which class/function it's crashing ? > > Please advise, my vb6.exe is crashing on ntdll.dll when building > > executables [quoted text clipped - 13 lines] > There's just not much anyone can probably assist with until you can post > source code. First, try clearing out the temp files. Second, during compiling or running, VB calls any user controls or ActiveX to read property values. Do you have any UserControl in your project? The Initialize and ReadProperties events fires as far as I know, so check if you have any code there that might cause errors and comment it out temporarily, such as subclassing code. Another thing that might interfere is Add-ins, so try to disable them all to see if that helps. If you have a backup copy of the last version that compiles fine, use WinMerge to see what changed between 2 projects, just specify two folders and it will compare all files. Double clicking a file, will show the changes in two windows, side by side. It's free and open source: http://en.wikipedia.org/wiki/WinMerge http://winmerge.org |
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