extern int bar_getfrob(int x); int __attribute__((weak)) foo[] = { 1, 2, 3, 4 }; int __attribute__((weak)) bar[] = { 10, 11, 12, 13 }; int __attribute__((weak)) frob[] = { 20, 21, 22, 23 }; int* pfoo = &foo[2]; int getfrob() { return bar_getfrob(2); }