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      1 // RUN: %clang_cc1 -fsyntax-only -verify %s
      2 
      3 // Obj-C string literal expressions
      4 template <typename T> struct StringTest {
      5   void f() {
      6     (void)@"Hello";
      7   }
      8 };
      9 
     10 template struct StringTest<int>;
     11 template struct StringTest<double>;
     12 
     13 // @selector expressions
     14 template <typename T> struct SelectorTest {
     15   SEL f() {
     16     return @selector(multiple:arguments:);
     17   }
     18   SEL f2() {
     19     return @selector(multiple:arguments:);
     20   }
     21 };
     22 
     23 template struct SelectorTest<int>;
     24 template struct SelectorTest<double>;
     25 
     26 // @protocol expressions
     27 @protocol P
     28 @end
     29 
     30 template <typename T> struct ProtocolTest {
     31   void f() {
     32     (void)@protocol(P);
     33   }
     34 };
     35 
     36 template struct ProtocolTest<int>;
     37 template struct ProtocolTest<double>;
     38 
     39 // @encode expressions
     40 template <typename T> struct EncodeTest {
     41   static const char *encode(T t) { 
     42     return @encode(T);
     43   }
     44 };
     45 
     46 template struct EncodeTest<int>;
     47 template struct EncodeTest<double>;
     48 template struct EncodeTest<wchar_t>;
     49 
     50 // @() boxing expressions.
     51 template <typename T> struct BoxingTest {
     52   static id box(T value) {
     53     return @(value);                     // expected-error {{illegal type 'int *' used in a boxed expression}} \
     54                                          // expected-error {{illegal type 'long double' used in a boxed expression}}
     55   }
     56 };
     57 
     58 @interface NSNumber
     59 + (NSNumber *)numberWithInt:(int)value;
     60 @end
     61 
     62 @interface NSString
     63 + (id)stringWithUTF8String:(const char *)str;
     64 @end
     65 
     66 template struct BoxingTest<int>;
     67 template struct BoxingTest<const char *>;
     68 template struct BoxingTest<int *>;        // expected-note {{in instantiation of member function 'BoxingTest<int *>::box' requested here}}
     69 template struct BoxingTest<long double>;  // expected-note {{in instantiation of member function 'BoxingTest<long double>::box' requested here}}
     70