badopt1.c

来自「this is a gcc file, you can download it 」· C语言 代码 · 共 16 行

// Based on a testcase by Bryan Weston <[e-mail]>
// egcs 1.1 fails to increment count

// Special g++ Options: -O2

struct Base { Base() {} }; // removing the constructor fixes the problem
struct Derived : Base {}; // so does removing the base class

int main() {
  int count = 0;
  Derived* array[1]; // making this Base*[1] does not fix the problem
  array[count++] = new Derived (); // but then new Base() does
  if (count!=1)
    return 1;
}