void foo(int* __restrict__ p, int* q, int* p1, int *q1) { int i; p = p1; q = q1; for (i = 0; i < 4; ++i) *++q = *++p + 1; } void bar(int* p, int* __restrict__ q, int* p1, int *q1) { int i; p = p1; q = q1; for (i = 0; i < 4; ++i) *++q = *++p + 1; }