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

     1  union foo
     2  {
     3    float f;
     4    int i;
     5  };
     6  
     7  foo (int a, float c)
     8  {
     9    union foo b;
    10    b.i = a;
    11    return b.f + c;
    12  }