Disable optimizations: --opt_level=off Or change C code from using post increment per below: Workaround 1: Load into temporary variable first // bug long long result = base * (*mult_ptr++); // Avoid by loading into temporary, then incrementing separately long long temp = *mult_ptr; mult_ptr++; long long result = base * temp; Workaround 2: Use array indexing instead of pointer arithmetic // bug long long *ptr = array; for (int i = 0; i < n; i++) {     result += base * (*ptr++); } // Avoid by using array indexing for (int i = 0; i < n; i++) {     result += base * array[i]; } Workaround 3: Manual pointer arithmetic with separate increment // bug long long result = base * (*mult_ptr++); // Avoid with manual arithmetic long long result = base * (*mult_ptr); mult_ptr = mult_ptr + 1;