Re: [libxml++] MS Visual 2005 - Return object across DLL boundary? (Was: Another issue)

[Eric B. <eri...@ao...>]

Is there are known workaround, or proposed fix?

Thanks,
Eric

----Original Message----
  On Wed, 2006-07-19 at 13:34 -0400, Robert S. Grimes wrote:
  [snip]
  > This seems to say the object was created on another heap (libxml++ DLL's
  > heap?) and being deleted by my code (using the main heap?).  It 
seems the
  > "return value optimization" has been applied, and it perhaps 
shouldn't have
  > been.  Does this make any sense?  If so, what do I do about it?  Or am I
  > missing something even more obvious?

  This looks the annoying MSVC++ requirement that memory is deallocated in
  the same library (DLL) in which it was allocated. So, if a library gives
  you a newly allocated object, you can't delete it yourself. You have to
  tell the library to delete it.  libsigc++ used to have this same
  problem.

  You can usually fix this by making sure that, though the deletion is
  initiated in the caller, the actual deletion happens in some function in
  the library. Which would require a patch.