Igor,
this was fixed in r2440 of http://www.squeakvm.org/svn/squeak/branches/Cog/platforms/Cross/vm/sqVirtual..., along with marshalling in the Alien plugin for stack-grows-down Stack and Cog VMs.
On Wed, Aug 3, 2011 at 9:17 AM, Igor Stasenko siguctua@gmail.com wrote:
I just found that a pointer to this function is null. Means that if you will use interpreterProxy->getStackPointer() in plugin, you will crash VM.
Could it be that it declared twice in sqVirtualMachine.c ?
... sqInt getStackPointer(void); /* Newsqueak FFI */ void *startOfAlienData(sqInt); usqInt sizeOfAlienData(sqInt); sqInt signalNoResume(sqInt);
#if VM_PROXY_MINOR > 8 sqInt getStackPointer(void); /* Alien FFI */ ...
(at least this code looks suspicious)
and why at assignment point it does conversions? VM->getStackPointer = (sqInt *(*)(void))getStackPointer;
while rest of functions don't require them?
In header it declared as: sqInt *(*getStackPointer)(void);
NBInterpreterProxy majorVersion 1 NBInterpreterProxy minorVersion 12
(means that it should be there :)
-- Best regards, Igor Stasenko AKA sig.