Create an object at a given address: Difference between revisions

Note that it is not possible to specify the address at which the embedding API function ''wrenSetSlotNewForeign'' allocates new objects and any attempt to allocate a new object at the same address as an old one by juggling with pointers will almost certainly lead to a seg fault. So all we can sensibly do is to change the value of the current object.

 

 

import "./fmt" for Fmt

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We now embed this in the following C program, compile and run it.

 

#include <stdio.h>

WrenVM* vm = wrenNewVM(&config);

const char* module = "main";

char *script = readFile(fileName);

WrenInterpretResult result = wrenInterpret(vm, module, script);

Integer object value changed to: 43 but still at address 0x55a56e0f2dd8.

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=={{header|Z80 Assembly}}==

When writing assembly yourself, you'll know any object's memory location in advance.