clang/test/Parser/cxx-attributes.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 class c {
   4   virtual void f1(const char* a, ...)
   5     __attribute__ (( __format__(__printf__,2,3) )) = 0;
   6   virtual void f2(const char* a, ...)
   7     __attribute__ (( __format__(__printf__,2,3) )) {}
   8 };
   9
  10 template <typename T> class X {
  11   template <typename S> void X<S>::f() __attribute__((locks_excluded())); // expected-error{{nested name specifier 'X<S>::' for declaration does not refer into a class, class template or class template partial specialization}} \
  12                                                                           // expected-warning{{attribute locks_excluded ignored, because it is not attached to a declaration}}
  13 };
  14
  15 namespace PR17666 {
  16   const int A = 1;
  17   typedef int __attribute__((__aligned__(A))) T1;
  18   int check1[__alignof__(T1) == 1 ? 1 : -1];
  19
  20   typedef int __attribute__((aligned(int(1)))) T1;
  21   typedef int __attribute__((aligned(int))) T2; // expected-error {{expected '(' for function-style cast}}
  22 }
  23
  24 __attribute((typename)) int x; // expected-warning {{unknown attribute 'typename' ignored}}
  25
  26 void fn() {
  27   void (*__attribute__((attr)) fn_ptr)() = &fn; // expected-warning{{unknown attribute 'attr' ignored}}
  28   void (*__attribute__((attrA)) *__attribute__((attrB)) fn_ptr_ptr)() = &fn_ptr; // expected-warning{{unknown attribute 'attrA' ignored}} expected-warning{{unknown attribute 'attrB' ignored}}
  29
  30   void (&__attribute__((attr)) fn_lref)() = fn; // expected-warning{{unknown attribute 'attr' ignored}}
  31   void (&&__attribute__((attr)) fn_rref)() = fn; // expected-warning{{unknown attribute 'attr' ignored}}
  32
  33   int i[5];
  34   int (*__attribute__((attr(i[1]))) pi);  // expected-warning{{unknown attribute 'attr' ignored}}
  35   pi = &i[0];
  36 }
  37
  38 [[deprecated([""])]] int WrongArgs; // expected-error {{expected variable name or 'this' in lambda capture list}}
  39 [[,,,,,]] int Commas1; // ok
  40 [[,, maybe_unused]] int Commas2; // ok
  41 [[maybe_unused,,,]] int Commas3; // ok
  42 [[,,maybe_unused,]] int Commas4; // ok
  43 [[foo bar]] int NoComma; // expected-error {{expected ','}} \
  44                          // expected-warning {{unknown attribute 'foo' ignored}}
  45 // expected-error@+2 2 {{expected ']'}}
  46 // expected-error@+1 {{expected external declaration}}
  47 [[foo