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      1 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu  -fsyntax-only -verify %s
      2 // RUN: %clang_cc1 -triple i386-unknown-linux-gnu  -fsyntax-only -verify %s
      3 // RUN: %clang_cc1 -triple x86_64-pc-win32  -fsyntax-only -verify %s
      4 // RUN: %clang_cc1 -triple i386-pc-win32  -fsyntax-only -verify %s
      5 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnux32  -fsyntax-only -verify %s
      6 
      7 struct a {
      8   int b;
      9   static void foo(int *a) __attribute__((interrupt)) {}
     10   void *operator new(__SIZE_TYPE__) throw() __attribute__((interrupt)) { return 0; } // expected-warning {{'interrupt' attribute only applies to non-K&R-style functions}}
     11 };
     12 
     13 struct a test __attribute__((interrupt)); // expected-warning {{'interrupt' attribute only applies to non-K&R-style functions}}
     14 
     15 __attribute__((interrupt)) int foo1(void) { return 0; }             // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'void' return type}}
     16 __attribute__((interrupt)) void foo2(void) {}                       // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have only a pointer parameter optionally followed by an integer parameter}}
     17 __attribute__((interrupt)) void foo3(void *a, unsigned b, int c) {} // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have only a pointer parameter optionally followed by an integer parameter}}
     18 __attribute__((interrupt)) void foo4(int a) {}                      // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a pointer as the first parameter}}
     19 #ifdef _LP64
     20 // expected-error-re@+6 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long' type as the second parameter}}
     21 #elif defined(__x86_64__)
     22 // expected-error-re@+4 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long long' type as the second parameter}}
     23 #else
     24 // expected-error-re@+2 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned int' type as the second parameter}}
     25 #endif
     26 __attribute__((interrupt)) void foo5(void *a, float b) {}
     27 #ifdef _LP64
     28 // expected-error-re@+6 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long' type as the second parameter}}
     29 #elif defined(__x86_64__)
     30 // expected-error-re@+4 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long long' type as the second parameter}}
     31 #else
     32 // expected-error-re@+2 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned int' type as the second parameter}}
     33 #endif
     34 __attribute__((interrupt)) void foo6(float *a, int b) {}
     35 
     36 #ifdef _LP64
     37 // expected-error-re@+4 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long' type as the second parameter}}
     38 #elif defined(__x86_64__)
     39 // expected-error-re@+2 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long long' type as the second parameter}}
     40 #endif
     41 __attribute__((interrupt)) void foo7(int *a, unsigned b) {}
     42 __attribute__((interrupt)) void foo8(int *a) {}
     43 template<typename T>
     44 __attribute__((interrupt)) void foo9(T *a) {}
     45 
     46 template <typename T>
     47 void bar(T *a) {
     48   foo9(a); // expected-error {{interrupt service routine cannot be called directly}}
     49 }
     50 
     51 template <typename Fn>
     52 void bar1(Fn F) {
     53   F(0);
     54 }
     55 __attribute__((interrupt)) void foo(int *) {}
     56 
     57 void g(void (*fp)(int *));
     58 int main(int argc, char **argv) {
     59   void *ptr = (void *)&foo7;
     60   g(foo8);
     61   (void)ptr;
     62   a::foo(ptr); // expected-error {{interrupt service routine cannot be called directly}}
     63   bar1(foo);
     64 #ifndef __x86_64__
     65   // expected-error@+2 {{interrupt service routine cannot be called directly}}
     66 #endif
     67   foo7((int *)argv, argc);
     68   foo8((int *)argv);       // expected-error {{interrupt service routine cannot be called directly}}
     69   bar(argv); // expected-note {{in instantiation of function template specialization 'bar<char *>' requested here}}
     70   return 0;
     71 }
     72 
     73