llvm/test/FrontendC/2003-11-27-UnionCtorInitialization.c

// RUN: %llvmgcc -S %s -o - | llvm-as -o /dev/null

struct i387_soft_struct {
 long cwd;
 long twd;
 long fip;
};
union i387_union {
 struct i387_soft_struct soft;
};
struct thread_struct {
 union i387_union i387;
};
void _init_task_union(void) {
  struct thread_struct thread = (struct thread_struct) { {{0}} };
}