OpenEuphoria

Re: Error Return Code?

• Posted by Euman <euman at bellsouth.net> Feb 01, 2001
• 769 views

> Euman writes:
> > Why then does MemCheck and BoundsChecker
> > report Resource Leaks because DLL's aren't
> > being free'd under Win32Lib?
>

> Robert write:
> What does the report say exactly?
> Are those tools available on the Web somewhere?
>
> I've had no complaints of dlls not being freed.
>

What confuses me is that Euphoria has openDLL and Robert say's these DLL's
are unLoaded on program exit (I dont think so Robert) My Guess is that
Win32Lib
will have to have FreeLibrary Added after WinMain( ) to compensate.

Keep in Mind that I was told, in future versions of Win32Lib
that FreeLibrary would be put in, unless Robert want's to fix this.

Not sure about this HeapAlloc (below) though.

I left *ALOT* out of this for size sake, the original is 708k

This Report was Generated by MemCheck 5.0
A trial version of MemCheck is here:


BoundsChecker also output nearly Identicle info.
My copy came with Borland C++ Builder 5.0
A trial version can be D/L'd from: http://www.numega.com/

Euman


Overwrite detected on HeapAlloc block
  * Corruption Detected *
  Current location: HeapFree in WOTIDY7_FULL.EXE <see stack trace>
  More info: Block address: LPVOID 1C22070h
  Detailed Info: Overwrite condition detected on an allocated block
    referenced in the HeapFree <see stack trace>.
    The guard bytes of block 01C22070h, size 26, have been changed,
    resulting in data and/or heap corruption.
    The block was allocated by a HeapAlloc <see stack trace>
    in module WOTIDY7_FULL.EXE.
    To pinpoint the location of the actual corruption,
    use BugCrusher mode or the mc_check_buffers() API.
  Parameters:
    hHeap is HANDLE 1B20000h (28442624)
      Number of free blocks: 2
      Number of used blocks: 42
      Memory allocated in heap: 908 bytes
    dwFlags is DWORD 0h (0)
    lpMem is LPVOID 1C22070h (29499504)
      Heap Block is USED
      Size: 32
  Stack Trace:
    kernel32.DLL! HeapFree
    WOTIDY7_FULL.EXE! ___CPPdebugHook + 4EAEh
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 69D80h
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 6AFF3h
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 62890h
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 62A48h
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 1D3E5h
  Thread ID: FFF167C7h  Prio: THREAD_PRIORITY_NORMAL (0)
  More information about this resource:
    Value: LPVOID 1C22070h    (internal type: PHEAP_BLOCK_WIN)
    Size:  1Ah (26) bytes
    Block lies in a Windows heap.
    Heap block status: USED  Allocation #512
    Allocated with HeapAlloc

    * Free with HeapFree *

    Heap Block is USED
    Size: 32
    Created by HeapAlloc in WOTIDY7_FULL.EXE <see stack trace>
    Stack Trace:
      kernel32.DLL! HeapAlloc
      WOTIDY7_FULL.EXE! ___CPPdebugHook + 4EAEh
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 6A021h
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 6A9FAh
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 62441h
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 62A48h
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 1D3E5h
    Heap Block is USED
    Size: 32

Library loaded: user32.dll
  * Runtime Info *
  Current location: LoadLibraryA in WOTIDY7_FULL.EXE <see stack trace>
  More info: Module handle: BFF50000h
  Detailed Info: No more info available.
  Stack Trace:
    kernel32.DLL! LoadLibraryA
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 79DCAh
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 7A61Ah
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 649B3h
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + E5Ah
    WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 8815Ah
    No owning module for EIP 0h, trace ended.
  Thread ID: FFF167C7h  Prio: THREAD_PRIORITY_NORMAL (0)

Library loaded: kernel32.dll
<SNIP> save space..........ALMOST SAME INFO as above.

Library loaded: user32.dll
<SNIP>

Library loaded: riched20.dll
<SNIP>

Library loaded: comctl32.dll
<SNIP>

Library loaded: gdi32.dll
<SNIP>


** AND After Normal Program Termination



No FreeLibrary for LoadLibraryA
  * Resource Leak *
  More info: Library Name: riched20.dll
  Detailed Info: The resource named 'riched20.dll' was not freed.
    HMODULE value 48000000h (1207959552) was allocated by LoadLibraryA
    <see stack trace> in WOTIDY7_FULL.EXE.
    Use FreeLibrary to release it when you're done.
  Thread ID: FFF167C7h  Prio: THREAD_PRIORITY_NORMAL (0)
  More information about this resource:
    Resource name: riched20.dll
    Value: HMODULE 48000000h
    Allocation #6
    Allocated with LoadLibraryA
    Free with FreeLibrary
    Module name: "C:\WINDOWS\SYSTEM\RICHED20.DLL"
    Created by LoadLibraryA in WOTIDY7_FULL.EXE <see stack trace>
    Stack Trace:
      kernel32.DLL! LoadLibraryA
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 79DCAh
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 7A61Ah
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 649B3h
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 21D86h
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + B2B4h
      WOTIDY7_FULL.EXE! __GetExceptDLLinfo + 8815Ah
      No owning module for EIP 0h, trace ended.
    Module name: "C:\WINDOWS\SYSTEM\RICHED20.DLL"

No FreeLibrary for LoadLibraryA
  * Resource Leak *
  More info: Library Name: shell32.dll

 <SNIP> save space..........ALMOST SAME INFO as above.

No FreeLibrary for LoadLibraryA
  * Resource Leak *
  More info: Library Name: comctl32.dll
  Detailed Info: The resource named 'comctl32.dll' was not freed.

  <SNIP>

No FreeLibrary for LoadLibraryA
  * Resource Leak *
  More info: Library Name: gdi32.dll
  Detailed Info: The resource named 'gdi32.dll' was not freed.

  <SNIP>

No FreeLibrary for LoadLibraryA
  * Resource Leak *
  More info: Library Name: user32.dll
  Detailed Info: The resource named 'user32.dll' was not freed.

  <SNIP>

No FreeLibrary for LoadLibraryA
  * Resource Leak *
  More info: Library Name: kernel32.dll
  Detailed Info: The resource named 'kernel32.dll' was not freed.

  <SNIP>


  Number of API failures: 154
  Number of Extent errors: 0
  Number of GDI errors: 0
  Number of general errors: 0
  Number of guard byte overwrite errors: 1
  Number of invalid parameter errors: 366      ** Not include because of
size
  Number of Windows resource leaks: 22      ** All not included because of
size  'Euman'
  Number of memory leaks: 0                        ** 0 Because of
Euphoria's Runtime
                                                                    ** No
way I can check this.
  Number of transfer destination overwrite errors: 0