test/Sema/attr-mig.c

// RUN: %clang_cc1 -fsyntax-only -verify %s

typedef int kern_return_t;
#define KERN_SUCCESS 0

__attribute__((mig_server_routine)) kern_return_t var = KERN_SUCCESS; // expected-warning{{'mig_server_routine' attribute only applies to functions, Objective-C methods, and blocks}}

__attribute__((mig_server_routine)) void foo_void(); // expected-warning{{'mig_server_routine' attribute only applies to routines that return a kern_return_t}}
__attribute__((mig_server_routine)) int foo_int(); // expected-warning{{'mig_server_routine' attribute only applies to routines that return a kern_return_t}}

__attribute__((mig_server_routine)) kern_return_t bar_extern(); // no-warning
__attribute__((mig_server_routine)) kern_return_t bar_forward(); // no-warning

__attribute__((mig_server_routine)) kern_return_t bar_definition() { // no-warning
  return KERN_SUCCESS;
}

kern_return_t bar_forward() { // no-warning
  return KERN_SUCCESS;
}

__attribute__((mig_server_routine(123))) kern_return_t bar_with_argument(); // expected-error{{'mig_server_routine' attribute takes no arguments}}