test/Inputs/clang-importer-sdk/platform/any/usr/include/unions.h

typedef union IntOrFloat {
  int i;
  float f;
} IntOrFloat;

typedef struct StructWithNamedUnion {
  int a;
  int b;
  IntOrFloat intfloat;
} NamedUnion;

struct StructWithUnnamedUnion {
  union {
    int i;
    float f;
  } intfloat;
};