attributes.cpp
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// RUN: %clang_cc1 -std=gnu++11 -fsyntax-only -verify %s
// RUN: not %clang_cc1 -std=gnu++11 -ast-dump %s | FileCheck %s
namespace attribute_aligned {
template<int N>
struct X {
char c[1] __attribute__((__aligned__((N)))); // expected-error {{alignment is not a power of 2}}
};
template <bool X> struct check {
int check_failed[X ? 1 : -1]; // expected-error {{array with a negative size}}
};
template <int N> struct check_alignment {
typedef check<N == sizeof(X<N>)> t; // expected-note {{in instantiation}}
};
check_alignment<1>::t c1;
check_alignment<2>::t c2;
check_alignment<3>::t c3; // expected-note 2 {{in instantiation}}
check_alignment<4>::t c4;
template<unsigned Size, unsigned Align>
class my_aligned_storage
{
__attribute__((aligned(Align))) char storage[Size];
};
template<typename T>
class C {
public:
C() {
static_assert(sizeof(t) == sizeof(T), "my_aligned_storage size wrong");
static_assert(alignof(t) == alignof(T), "my_aligned_storage align wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}}
}
private:
my_aligned_storage<sizeof(T), alignof(T)> t;
};
C<double> cd;
}
namespace PR9049 {
extern const void *CFRetain(const void *ref);
template<typename T> __attribute__((cf_returns_retained))
inline T WBCFRetain(T aValue) { return aValue ? (T)CFRetain(aValue) : (T)0; }
extern void CFRelease(const void *ref);
template<typename T>
inline void WBCFRelease(__attribute__((cf_consumed)) T aValue) { if(aValue) CFRelease(aValue); }
}
// CHECK: FunctionTemplateDecl {{.*}} HasAnnotations
// CHECK: AnnotateAttr {{.*}} "ANNOTATE_FOO"
// CHECK: AnnotateAttr {{.*}} "ANNOTATE_BAR"
// CHECK: FunctionDecl {{.*}} HasAnnotations
// CHECK: TemplateArgument type 'int'
// CHECK: AnnotateAttr {{.*}} "ANNOTATE_FOO"
// CHECK: AnnotateAttr {{.*}} "ANNOTATE_BAR"
template<typename T> [[clang::annotate("ANNOTATE_FOO"), clang::annotate("ANNOTATE_BAR")]] void HasAnnotations();
void UseAnnotations() { HasAnnotations<int>(); }