In our previous episode, Jonas Maebe said: > > because this is not a problem in Delphi nor it was in an old version > > of fpc-Lazarus 32 bits. Please give me a tip. > > Many thanks in advance. > > You probably have to mark the memory in which you write the code as > "executable" first (this has to be done using an OS-specific function; > I know next to nothing about Windows programming, but you should be > able to find the necessary information in MSDN). > > In fact, you should also do this on 32 bit platforms, since more and > more systems mark memory by default as not executable for security > purposes.
This is called DEP (Data Execution Protection, which is an amalgam of resp AMD and Intel hardware protection and some software forms). IIRC it is always on for 64-bit, and for 32-bit server versions that use a PAE kernel. (client OSes don't have PAE version on windows afaik) Afaik it can only be turned on before starting a binary. An executable can't disable it while running (since then it would be useless, as a virus could simply disable it) See e.g. http://techblissonline.com/enable-disable-dep-in-windows-xp-vista/ Searching for "disable dep" or so will probably yield more results. Of course, this is not healthy and supportable application behaviour, but I assume this is already known. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
