modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr19687.c (about) 1 extern void abort (void); 2 3 union U 4 { 5 int i, j[4]; 6 }; 7 8 int main () 9 { 10 union U t = {}; 11 int i; 12 13 for (i = 0; i < 4; ++i) 14 if (t.j[i] != 0) 15 abort (); 16 17 return 0; 18 }