Flexible array member

[tyfkda]

struct Foo {
  int count;
  int buffer[];  // <=
};

sizeof(struct Foo) == sizeof(int)

static struct Foo foo = {1, {2, 3, 4}};

Check:

• Array: struct Foo arr[5];
• Struct member: struct Bar { struct Foo foo; int after; }
• No initializer: struct Foo foo;

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