modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/20001109-1.c (about)

     1  typedef struct _foo foo;
     2  extern foo bar;
     3  struct _foo {
     4    int a;
     5  };
     6  
     7  int tst[__alignof__ (bar) >= __alignof__ (int) ? 1 : -1];