//========================= var_0.c ======================== int i1 = 1; static int i2$TU0 = 2; extern int i3 = 3; int i4; static int i5$TU0; //========================= var_1.c ======================== int i1; int i2; int i3; int i4; int i5; //========================= var_2.c ======================== extern int i1; extern int i2; extern int i3; extern int i4; extern int i5;