ref: 0645a868520feb0fac8932b08b6c4e1258b58c0c
dir: /tests/execute/0032-indec.c/
int zero() { return 0; } int one() { return 1; } int main() { int x; int y; x = zero(); y = ++x; if (x != 1) return 1; if (y != 1) return 1; x = one(); y = --x; if (x != 0) return 1; if (y != 0) return 1; x = zero(); y = x++; if (x != 1) return 1; if (y != 0) return 1; x = one(); y = x--; if (x != 0) return 1; if (y != 1) return 1; return 0; }