Invalid Freed with CA_FreeMemory

[2ctrlers]

I'm using Labwindows CVI FDS 10.0

Hello, I get the error "Invalid Freed" from the function CA_FreeMemory.

First I allocated the memory with:

...

case (CAVT_SHORT | CAVT_ARRAY): 

ConvertirVariant=CA_VariantGet1DArray (&Variant_Item, CAVT_SHORT, &Leer_ASHORT, &Nvalores);
break;

Later y want free this memory ...

CA_FreeMemory(Leer_ASHORT);

and I get the message Invalid : Freed

Many Thanks

[thomas1330]

Hi!

Usually, if you get the message invalid: freed it is because you have already freed the pointer before... Just check it out.

Have you verify if CA_VariantGet1DArray  didn't return an error or did not allocate correctly the array?

And finally here it is an extract from the CVI Help about which function you need to use according to the type of array values :

C-style array that CA_VariantGet1DArray dynamically allocates. The type of the array must be the same as arrayType. Pass the address of an array pointer.

You can treat this array like any other 1D C array.

Call CA_FreeMemory on the array to discard it when it is no longer needed. If the array contains any of the data types in the following table, you must call the appropriate function to free each element when you finish using it.

Data Type	Function to Free Each Element
char *	CA_FreeMemory
CAObjHandle	CA_DiscardObjHandle
BSTR	CA_FreeBSTR
LPUNKNOWN	array[i]->lpVtbl->Release()
LPDISPATCH	array[i]->lpVtbl->Release()
VARIANT	CA_VariantClear

Best regards,

thomas1330