41 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -verify %s2 3typedef double * __attribute__((align_value(64))) aligned_double;4 5void foo(aligned_double x, double * y __attribute__((align_value(32))),6 double & z __attribute__((align_value(128)))) { };7 8template <typename T, int Q>9struct x {10 typedef T* aligned_int __attribute__((align_value(32+8*Q)));11 aligned_int V;12 13 void foo(aligned_int a, T &b __attribute__((align_value(sizeof(T)*4))));14};15 16x<float, 4> y;17 18template <typename T, int Q>19struct nope {20 // expected-error@+1 {{requested alignment is not a power of 2}}21 void foo(T &b __attribute__((align_value(sizeof(T)+1))));22};23 24// expected-note@+1 {{in instantiation of template class 'nope<long double, 4>' requested here}}25nope<long double, 4> y2;26 27namespace GH26612 {28// This used to crash while issuing the diagnostic about only applying to a29// pointer or reference type.30// FIXME: it would be ideal to only diagnose once rather than twice. We get one31// diagnostic from explicit template arguments and another one for deduced32// template arguments, which seems silly.33template <class T>34void f(T __attribute__((align_value(4))) x) {} // expected-warning 2 {{'align_value' attribute only applies to a pointer or reference ('int' is invalid)}}35 36void foo() {37 f<int>(0); // expected-note {{while substituting explicitly-specified template arguments into function template 'f'}} \38 expected-note {{while substituting deduced template arguments into function template 'f' [with T = int]}}39}40} // namespace GH2661241