modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr58726.c (about) 1 /* PR rtl-optimization/58726 */ 2 3 int a, c; 4 union { int f1; int f2 : 1; } b; 5 6 short 7 foo (short p) 8 { 9 return p < 0 ? p : a; 10 } 11 12 int 13 main () 14 { 15 if (sizeof (short) * __CHAR_BIT__ != 16 16 || sizeof (int) * __CHAR_BIT__ != 32) 17 return 0; 18 b.f1 = 56374; 19 unsigned short d; 20 int e = b.f2; 21 d = e == 0 ? b.f1 : 0; 22 c = foo (d); 23 if (c != (short) 56374) 24 __builtin_abort (); 25 return 0; 26 }