88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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template<int z>
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int test9(int *a) {
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a = (int *) __builtin_assume_aligned(a, z + 1); // expected-error {{requested alignment is not a power of 2}}
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return a[0];
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}
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void test9i(int *a) {
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test9<42>(a); // expected-note {{in instantiation of function template specialization 'test9<42>' requested here}}
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}
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template<typename T>
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int test10(int *a, T z) {
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a = (int *) __builtin_assume_aligned(a, z + 1); // expected-error {{must be a constant integer}}
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return a[0];
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}
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int test10i(int *a) {
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return test10(a, 42); // expected-note {{in instantiation of function template specialization 'test10<int>' requested here}}
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}
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template <int q>
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void *atest() __attribute__((assume_aligned(q))); // expected-error {{requested alignment is not a power of 2}}
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template <int q, int o>
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void *atest2() __attribute__((assume_aligned(q, o))); // expected-error {{requested alignment is not a power of 2}}
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void test20() {
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atest<31>(); // expected-note {{in instantiation of function template specialization 'atest<31>' requested here}}
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atest<32>();
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atest2<31, 5>(); // expected-note {{in instantiation of function template specialization 'atest2<31, 5>' requested here}}
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atest2<32, 4>();
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}
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// expected-error@+1 {{invalid application of 'sizeof' to a function type}}
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template<typename T> __attribute__((assume_aligned(sizeof(int(T()))))) T *f();
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void test21() {
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void *p = f<void>(); // expected-note {{in instantiation of function template specialization 'f<void>' requested here}}
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}
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// expected-error@+1 {{functional-style cast from 'void' to 'int' is not allowed}}
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template<typename T> __attribute__((assume_aligned(sizeof((int(T())))))) T *g();
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void test23() {
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void *p = g<void>(); // expected-note {{in instantiation of function template specialization 'g<void>' requested here}}
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}
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template <typename T, int o>
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T *atest3() __attribute__((assume_aligned(31, o))); // expected-error {{requested alignment is not a power of 2}}
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template <typename T, int o>
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T *atest4() __attribute__((assume_aligned(32, o)));
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void test22() {
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atest3<int, 5>();
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atest4<int, 5>();
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}
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// expected-warning@+1 {{'assume_aligned' attribute only applies to functions and methods}}
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class __attribute__((assume_aligned(32))) x {
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int y;
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};
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// expected-warning@+1 {{'assume_aligned' attribute only applies to return values that are pointers or references}}
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x foo() __attribute__((assume_aligned(32)));
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struct s1 {
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static const int x = 32;
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};
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struct s2 {
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static const int x = 64;
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};
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struct s3 {
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static const int x = 63;
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};
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template <typename X>
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void *atest5() __attribute__((assume_aligned(X::x))); // expected-error {{requested alignment is not a power of 2}}
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void test24() {
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atest5<s1>();
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atest5<s2>();
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atest5<s3>(); // expected-note {{in instantiation of function template specialization 'atest5<s3>' requested here}}
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}
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