Can the size of pointers vary between data and function pointers?

by 
> type ppp.c
#include <stdio.h>
#include <stdlib.h>

int global = 0;

int main(void) {
    int local = 0;
    static int staticint = 0;
    int *mall;
    int (*fx)(void);

    fx = main;
    mall = malloc(42); /* assume it worked */
    printf("#sizeof pointer to local: %d\n", (int)sizeof &local);
    printf("#sizeof pointer to static: %d\n", (int)sizeof &staticint);
    printf("#sizeof pointer to malloc'd: %d\n", (int)sizeof mall);
    printf("#sizeof pointer to global: %d\n", (int)sizeof &global);
    printf("#sizeof pointer to main(): %d\n", (int)sizeof fx);
    free(mall);
    return 0;
}
> tcc -mc ppp.c
Turbo C  Version 2.01 ...
warnings about unused variables elided ...
Turbo Link  Version 2.0 ...
> ppp
#sizeof pointer to local: 4
#sizeof pointer to static: 4
#sizeof pointer to malloc'd: 4
#sizeof pointer to global: 4
#sizeof pointer to main(): 2
> tcc -mm ppp.c
> ppp
#sizeof pointer to local: 2
#sizeof pointer to static: 2
#sizeof pointer to malloc'd: 2
#sizeof pointer to global: 2
#sizeof pointer to main(): 4

tcc -mc generates code in the “compact” model; tcc -mm generates code in the “medium” model

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