| // RUN: %clang_cc1 %s -fsyntax-only -verify |
| // expected-no-diagnostics |
| |
| // Packed structs. |
| struct s { |
| char a; |
| int b __attribute__((packed)); |
| char c; |
| int d; |
| }; |
| |
| extern int a1[sizeof(struct s) == 12 ? 1 : -1]; |
| extern int a2[__alignof(struct s) == 4 ? 1 : -1]; |
| |
| struct __attribute__((packed)) packed_s { |
| char a; |
| int b __attribute__((packed)); |
| char c; |
| int d; |
| }; |
| |
| extern int b1[sizeof(struct packed_s) == 10 ? 1 : -1]; |
| extern int b2[__alignof(struct packed_s) == 1 ? 1 : -1]; |
| |
| struct fas { |
| char a; |
| int b[]; |
| }; |
| |
| extern int c1[sizeof(struct fas) == 4 ? 1 : -1]; |
| extern int c2[__alignof(struct fas) == 4 ? 1 : -1]; |
| |
| struct __attribute__((packed)) packed_fas { |
| char a; |
| int b[]; |
| }; |
| |
| extern int d1[sizeof(struct packed_fas) == 1 ? 1 : -1]; |
| extern int d2[__alignof(struct packed_fas) == 1 ? 1 : -1]; |
| |
| struct packed_after_fas { |
| char a; |
| int b[]; |
| } __attribute__((packed)); |
| |
| extern int d1_2[sizeof(struct packed_after_fas) == 1 ? 1 : -1]; |
| extern int d2_2[__alignof(struct packed_after_fas) == 1 ? 1 : -1]; |
| |
| // Alignment |
| |
| struct __attribute__((aligned(8))) as1 { |
| char c; |
| }; |
| |
| extern int e1[sizeof(struct as1) == 8 ? 1 : -1]; |
| extern int e2[__alignof(struct as1) == 8 ? 1 : -1]; |
| |
| struct __attribute__((aligned)) as1_2 { |
| char c; |
| }; |
| #ifdef __s390x__ |
| extern int e1_2[sizeof(struct as1_2) == 8 ? 1 : -1]; |
| extern int e2_2[__alignof(struct as1_2) == 8 ? 1 : -1]; |
| #else |
| extern int e1_2[sizeof(struct as1_2) == 16 ? 1 : -1]; |
| extern int e2_2[__alignof(struct as1_2) == 16 ? 1 : -1]; |
| #endif |
| |
| struct as2 { |
| char c; |
| int __attribute__((aligned(8))) a; |
| }; |
| |
| extern int f1[sizeof(struct as2) == 16 ? 1 : -1]; |
| extern int f2[__alignof(struct as2) == 8 ? 1 : -1]; |
| |
| struct __attribute__((packed)) as3 { |
| char c; |
| int a; |
| int __attribute__((aligned(8))) b; |
| }; |
| |
| extern int g1[sizeof(struct as3) == 16 ? 1 : -1]; |
| extern int g2[__alignof(struct as3) == 8 ? 1 : -1]; |
| |
| |
| // rdar://5921025 |
| struct packedtest { |
| int ted_likes_cheese; |
| void *args[] __attribute__((packed)); |
| }; |
| |
| // Packed union |
| union __attribute__((packed)) au4 {char c; int x;}; |
| extern int h1[sizeof(union au4) == 4 ? 1 : -1]; |
| extern int h2[__alignof(union au4) == 1 ? 1 : -1]; |
| |
| // Aligned union |
| union au5 {__attribute__((aligned(4))) char c;}; |
| extern int h1[sizeof(union au5) == 4 ? 1 : -1]; |
| extern int h2[__alignof(union au5) == 4 ? 1 : -1]; |
| |
| // Alignment+packed |
| struct as6 {char c; __attribute__((packed, aligned(2))) int x;}; |
| extern int i1[sizeof(struct as6) == 6 ? 1 : -1]; |
| extern int i2[__alignof(struct as6) == 2 ? 1 : -1]; |
| |
| union au6 {char c; __attribute__((packed, aligned(2))) int x;}; |
| extern int k1[sizeof(union au6) == 4 ? 1 : -1]; |
| extern int k2[__alignof(union au6) == 2 ? 1 : -1]; |
| |
| // Check postfix attributes |
| union au7 {char c; int x;} __attribute__((packed)); |
| extern int l1[sizeof(union au7) == 4 ? 1 : -1]; |
| extern int l2[__alignof(union au7) == 1 ? 1 : -1]; |
| |
| struct packed_fas2 { |
| char a; |
| int b[]; |
| } __attribute__((packed)); |
| |
| extern int m1[sizeof(struct packed_fas2) == 1 ? 1 : -1]; |
| extern int m2[__alignof(struct packed_fas2) == 1 ? 1 : -1]; |
| |
| // Attribute aligned can round down typedefs. PR9253 |
| typedef long long __attribute__((aligned(1))) nt; |
| |
| struct nS { |
| char buf_nr; |
| nt start_lba; |
| }; |
| |
| #if defined(_WIN32) && !defined(__declspec) // _MSC_VER is unavailable in cc1. |
| // Alignment doesn't affect packing in MS mode. |
| extern int n1[sizeof(struct nS) == 16 ? 1 : -1]; |
| extern int n2[__alignof(struct nS) == 8 ? 1 : -1]; |
| #else |
| extern int n1[sizeof(struct nS) == 9 ? 1 : -1]; |
| extern int n2[__alignof(struct nS) == 1 ? 1 : -1]; |
| #endif |