ref: a7eae833f9d4a359b5346e6fe4c68522faabf245
dir: /tests/cc/execute/0186-dec_ary.c/
struct node { int index; }; struct node nodes[2]; int main(void) { int d = 1, c; d = 1; c = nodes[--d].index++; if (d != 0 || nodes[0].index != 1) return 1; d = -1; c = nodes[++d].index--; if (d != 0 || nodes[0].index != 0) return 2; return 0; }