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2 points by almkglor 6113 days ago | link | parent

This seems to be correct on my AMD64:

  #include<stdio.h>
  
  int main(void){
        printf("sizeof(int) = %d\n", sizeof(int));
        printf("sizeof(long) = %d\n", sizeof(long));
        printf("sizeof(void*) = %d\n", sizeof(void*));
        return 0;
  }

  sizeof(int) = 4
  sizeof(long) = 8
  sizeof(void*) = 8
However I think there may be processors/archs where sizeof(long) != sizeof(void* ). My attempt at fixing was to use a union, but something's wrong with the way closures are handled in my fix attempt - closures don't seem to have a type associated with them, so I'm not exactly sure how they're supposed to be done.

Edit: I'll probably need to search through C language specs, though - I'm not sure, but it might be standardized that sizeof(long) >= sizeof(void* )