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150
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1 // RUN: %clang_cc1 -fsyntax-only -verify %s
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2
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3 template<int z>
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4 int test9(int *a) {
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5 a = (int *) __builtin_assume_aligned(a, z + 1); // expected-error {{requested alignment is not a power of 2}}
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6 return a[0];
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7 }
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8
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9 void test9i(int *a) {
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10 test9<42>(a); // expected-note {{in instantiation of function template specialization 'test9<42>' requested here}}
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11 }
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12
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13 template<typename T>
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14 int test10(int *a, T z) {
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15 a = (int *) __builtin_assume_aligned(a, z + 1); // expected-error {{must be a constant integer}}
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16 return a[0];
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17 }
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18
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19 int test10i(int *a) {
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20 return test10(a, 42); // expected-note {{in instantiation of function template specialization 'test10<int>' requested here}}
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21 }
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22
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23 template <int q>
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24 void *atest() __attribute__((assume_aligned(q))); // expected-error {{requested alignment is not a power of 2}}
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25
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26 template <int q, int o>
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27 void *atest2() __attribute__((assume_aligned(q, o))); // expected-error {{requested alignment is not a power of 2}}
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28
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29 void test20() {
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30 atest<31>(); // expected-note {{in instantiation of function template specialization 'atest<31>' requested here}}
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31 atest<32>();
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32
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33 atest2<31, 5>(); // expected-note {{in instantiation of function template specialization 'atest2<31, 5>' requested here}}
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34 atest2<32, 4>();
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35 }
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36
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37 // expected-error@+1 {{invalid application of 'sizeof' to a function type}}
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38 template<typename T> __attribute__((assume_aligned(sizeof(int(T()))))) T *f();
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39 void test21() {
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40 void *p = f<void>(); // expected-note {{in instantiation of function template specialization 'f<void>' requested here}}
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41 }
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42
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43 // expected-error@+1 {{functional-style cast from 'void' to 'int' is not allowed}}
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44 template<typename T> __attribute__((assume_aligned(sizeof((int(T())))))) T *g();
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45 void test23() {
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46 void *p = g<void>(); // expected-note {{in instantiation of function template specialization 'g<void>' requested here}}
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47 }
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48
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49 template <typename T, int o>
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50 T *atest3() __attribute__((assume_aligned(31, o))); // expected-error {{requested alignment is not a power of 2}}
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51
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52 template <typename T, int o>
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53 T *atest4() __attribute__((assume_aligned(32, o)));
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54
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55 void test22() {
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56 atest3<int, 5>();
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57 atest4<int, 5>();
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58 }
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59
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60 // expected-warning@+1 {{'assume_aligned' attribute only applies to Objective-C methods and functions}}
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61 class __attribute__((assume_aligned(32))) x {
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62 int y;
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63 };
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64
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65 // expected-warning@+1 {{'assume_aligned' attribute only applies to return values that are pointers or references}}
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66 x foo() __attribute__((assume_aligned(32)));
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67
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68 struct s1 {
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69 static const int x = 32;
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70 };
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71
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72 struct s2 {
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73 static const int x = 64;
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74 };
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75
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76 struct s3 {
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77 static const int x = 63;
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78 };
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79
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80 template <typename X>
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81 void *atest5() __attribute__((assume_aligned(X::x))); // expected-error {{requested alignment is not a power of 2}}
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82 void test24() {
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83 atest5<s1>();
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84 atest5<s2>();
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85 atest5<s3>(); // expected-note {{in instantiation of function template specialization 'atest5<s3>' requested here}}
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86 }
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87
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