llvm-project/clang/test/CodeGen/union.c

60 lines
866 B
C

// RUN: %clang_cc1 %s -emit-llvm -o -
union u_tag {
int a;
float b;
} u;
void f() {
u.b = 11;
}
float get_b(union u_tag *my_u) {
return my_u->b;
}
int f2( float __x ) {
union{
float __f;
unsigned int __u;
}__u;
return (int)(__u.__u >> 31);
}
typedef union { int i; int *j; } value;
int f3(value v) {
return *v.j;
}
enum E9 { one, two };
union S65 { enum E9 a; } ; union S65 s65;
void fS65() { enum E9 e = s65.a; }
typedef union{
unsigned char x[65536];
} q;
int qfunc() {q buf; unsigned char* x = buf.x;}
union RR {_Bool a : 1;} RRU;
int RRF(void) {return RRU.a;}
// PR6164
typedef union T0 { unsigned int : 0; } T0;
T0 t0;
union { int large_bitfield: 31; char c } u2;
struct dt_t_s {
union {
long long u : 56;
} __attribute__((packed));
};
struct {
struct {
struct {
struct dt_t_s t;
};
};
} a;