c pointers trunctaed when module importing related functions is not in the same module that is using them

badPointer.nim

import somePointerMod

let cptr = somePointer ()
cptr.printPointer

results.txt

$ nim c badPointer.nim 
config/nim.cfg(53, 3) Hint: added path: '/home/dwight/.babel/pkgs/' [Path]
config/nim.cfg(54, 3) Hint: added path: '/home/dwight/.nimble/pkgs/' [Path]
Hint: used config file '/home/dwight/nim/build/Nim/config/nim.cfg' [Conf]
Hint: system [Processing]
Hint: badPointer [Processing]
Hint: somePointerMod [Processing]
CC: badPointer
CC: stdlib_system
CC: somePointerMod
Hint:  [Link]
Hint: operation successful (9561 lines compiled; 2.073 sec total; 14.143MB; Debug Build) [SuccessX]

$ ./badPointer 
Original pointer: 0xff12345678
Pointer is now  : 0x12345678

#if I don't import, but put everything in the same file, then no truncation...

somePointerMod.nim

{.emit: """
void* somePointer () {
    void* ptr = (void*) 0xFF12345678;
    printf ("Original pointer: %p\n", ptr);
    return ptr;
}
void printPointer (void* ptr) {
    printf ("Pointer is now  : %p\n", ptr);
}
""".}

type cPointer* = ptr object

proc somePointer* () : cPointer {.importc, noDecl.}
proc printPointer* (p: cPointer) {.importc, noDecl.}