llvm-project/clang/test/Sema/align-x86.c
David Majnemer 475b25eefa AST: Don't ignore alignas on EnumDecls when calculating alignment
We didn't consider any alignment attributes on an EnumDecl when
calculating alignment.

While we are here, ignore alignment specifications on typedef types if
one is used as the underlying type.  Otherwise, weird things happen:

enum Y : int;
Y y;

typedef int __attribute__((aligned(64))) u;
enum Y : u {};

What is the alignment of 'Y'?  It would be more consistent with the
overall design of enums with fixed underlying types to consider the
underlying type's UnqualifiedDesugaredType.

This fixes PR22279.

llvm-svn: 226653
2015-01-21 10:54:38 +00:00

56 lines
1.5 KiB
C

// RUN: %clang_cc1 -triple i386-apple-darwin9 -fsyntax-only -verify %s
// expected-no-diagnostics
// PR3433
double g1;
short chk1[__alignof__(g1) == 8 ? 1 : -1];
short chk2[__alignof__(double) == 8 ? 1 : -1];
long long g2;
short chk1[__alignof__(g2) == 8 ? 1 : -1];
short chk2[__alignof__(long long) == 8 ? 1 : -1];
unsigned long long g5;
short chk1[__alignof__(g5) == 8 ? 1 : -1];
short chk2[__alignof__(unsigned long long) == 8 ? 1 : -1];
_Complex double g3;
short chk1[__alignof__(g3) == 8 ? 1 : -1];
short chk2[__alignof__(_Complex double) == 8 ? 1 : -1];
// PR6362
struct __attribute__((packed)) {unsigned int a;} g4;
short chk1[__alignof__(g4) == 1 ? 1 : -1];
short chk2[__alignof__(g4.a) == 1 ? 1 : -1];
double g6[3];
short chk1[__alignof__(g6) == 8 ? 1 : -1];
short chk2[__alignof__(double[3]) == 8 ? 1 : -1];
enum { x = 18446744073709551615ULL } g7;
short chk1[__alignof__(g7) == 8 ? 1 : -1];
// PR5637
#define ALIGNED(x) __attribute__((aligned(x)))
typedef ALIGNED(2) struct {
char a[3];
} T;
short chk1[sizeof(T) == 3 ? 1 : -1];
short chk2[sizeof(T[1]) == 4 ? 1 : -1];
short chk3[sizeof(T[2]) == 6 ? 1 : -1];
short chk4[sizeof(T[2][1]) == 8 ? 1 : -1];
short chk5[sizeof(T[1][2]) == 6 ? 1 : -1];
typedef struct ALIGNED(2) {
char a[3];
} T2;
short chk1[sizeof(T2) == 4 ? 1 : -1];
short chk2[sizeof(T2[1]) == 4 ? 1 : -1];
short chk3[sizeof(T2[2]) == 8 ? 1 : -1];
short chk4[sizeof(T2[2][1]) == 8 ? 1 : -1];
short chk5[sizeof(T2[1][2]) == 8 ? 1 : -1];