New to the Nim language, I'm trying to store the address of an object in a
table to interface it with C code. I've realized that storing the entire object
requires a lot of memory, especially if I'm storing a lot of objects. So
instead of storing the object, I want to store its address.
type
myObj = ref object
age: int
# Init global table
var testTable = initTable[string, ptr myObj]()
proc initTableObj (): cint =
# Constructor
let obj = newObj()
obj.age = 20
# Store address in 'testTable'
testTable["key1"] = obj.addr
return 0
proc callTableObj (): cint =
let p = testTable["key1"]
if p == nil:
echo "yes"
return 1
# Deference
let newObj = p[]
if newObj == nil:
echo "yes"
return 1
else:
# Error here : SIGSEGV: Illegal storage access. (Attempt to read from
nil?)
echo "Age: ", newObj.age
return 0
Run
I get this error **SIGSEGV: Illegal storage access** I'd like to know what I'm
doing wrong, If I call the procedure `initTableObj` inside my `callTableObj`
procedure, everything works.
