test/SemaCXX/warn-thread-safety-parsing.cpp

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


//-----------------------------------------//
//  Helper fields
//-----------------------------------------//

class __attribute__((lockable)) Mu {
  public:
  void Lock();
};

class UnlockableMu{
};

class MuWrapper {
  public:
  Mu mu;
  Mu getMu() {
    return mu;
  }
  Mu * getMuPointer() {
    return μ
  }
};


class MuDoubleWrapper {
  public:
  MuWrapper* muWrapper;
  MuWrapper* getWrapper() {
    return muWrapper;
  }
};

Mu mu1;
UnlockableMu umu;
Mu mu2;
MuWrapper muWrapper;
MuDoubleWrapper muDoubleWrapper;
Mu* muPointer;
Mu ** muDoublePointer = & muPointer;
Mu& muRef = mu1;

//---------------------------------------//
// Scoping tests
//--------------------------------------//

class Foo {
  Mu foomu;    
  void needLock() __attribute__((exclusive_lock_function(foomu)));
};

class Foo2 {
  void needLock() __attribute__((exclusive_lock_function(foomu)));
  Mu foomu;    
};

class Bar {
 Mu barmu;
 Mu barmu2 __attribute__((acquired_after(barmu)));
};


//-----------------------------------------//
//   No Thread Safety Analysis (noanal)    //
//-----------------------------------------//

// FIXME: Right now we cannot parse attributes put on function definitions
// We would like to patch this at some point.

#if !__has_attribute(no_thread_safety_analysis)
#error "Should support no_thread_safety_analysis attribute"
#endif

void noanal_fun() __attribute__((no_thread_safety_analysis));

void noanal_fun_args() __attribute__((no_thread_safety_analysis(1))); // \
  expected-error {{attribute takes no arguments}}

int noanal_testfn(int y) __attribute__((no_thread_safety_analysis));

int noanal_testfn(int y) {
  int x __attribute__((no_thread_safety_analysis)) = y; // \
    expected-warning {{'no_thread_safety_analysis' attribute only applies to functions and methods}}
  return x;
};

int noanal_test_var __attribute__((no_thread_safety_analysis)); // \
  expected-warning {{'no_thread_safety_analysis' attribute only applies to functions and methods}}

class NoanalFoo {
 private:
  int test_field __attribute__((no_thread_safety_analysis)); // \
    expected-warning {{'no_thread_safety_analysis' attribute only applies to functions and methods}}
  void test_method() __attribute__((no_thread_safety_analysis));
};

class __attribute__((no_thread_safety_analysis)) NoanalTestClass { // \
    expected-warning {{'no_thread_safety_analysis' attribute only applies to functions and methods}}
};

void noanal_fun_params(int lvar __attribute__((no_thread_safety_analysis))); // \
  expected-warning {{'no_thread_safety_analysis' attribute only applies to functions and methods}}


//-----------------------------------------//
//  Guarded Var Attribute (gv)
//-----------------------------------------//

#if !__has_attribute(guarded_var)
#error "Should support guarded_var attribute"
#endif

int gv_var_noargs __attribute__((guarded_var));

int gv_var_args __attribute__((guarded_var(1))); // \
    expected-error {{attribute takes no arguments}}

class GVFoo {
 private:
  int gv_field_noargs __attribute__((guarded_var));
  int gv_field_args __attribute__((guarded_var(1))); // \
      expected-error {{attribute takes no arguments}}
};

class __attribute__((guarded_var)) GV { // \
      expected-warning {{'guarded_var' attribute only applies to fields and global variables}}
};

void gv_function() __attribute__((guarded_var)); // \
    expected-warning {{'guarded_var' attribute only applies to fields and global variables}}

void gv_function_params(int gv_lvar __attribute__((guarded_var))); // \
    expected-warning {{'guarded_var' attribute only applies to fields and global variables}}

int gv_testfn(int y){
  int x __attribute__((guarded_var)) = y; // \
      expected-warning {{'guarded_var' attribute only applies to fields and global variables}}
  return x;
}

//-----------------------------------------//
//   Pt Guarded Var Attribute (pgv)
//-----------------------------------------//

//FIXME: add support for boost::scoped_ptr<int> fancyptr  and references

#if !__has_attribute(pt_guarded_var)
#error "Should support pt_guarded_var attribute"
#endif

int *pgv_pt_var_noargs __attribute__((pt_guarded_var));

int pgv_var_noargs __attribute__((pt_guarded_var)); // \
    expected-warning {{'pt_guarded_var' only applies to pointer types; type here is 'int'}}

class PGVFoo {
 private:
  int *pt_field_noargs __attribute__((pt_guarded_var));
  int field_noargs __attribute__((pt_guarded_var)); // \
    expected-warning {{'pt_guarded_var' only applies to pointer types; type here is 'int'}}
  int *gv_field_args __attribute__((pt_guarded_var(1))); // \
    expected-error {{attribute takes no arguments}}
};

class __attribute__((pt_guarded_var)) PGV { // \
    expected-warning {{'pt_guarded_var' attribute only applies to fields and global variables}}
};

int *pgv_var_args __attribute__((pt_guarded_var(1))); // \
  expected-error {{attribute takes no arguments}}


void pgv_function() __attribute__((pt_guarded_var)); // \
  expected-warning {{'pt_guarded_var' attribute only applies to fields and global variables}}

void pgv_function_params(int *gv_lvar __attribute__((pt_guarded_var))); // \
  expected-warning {{'pt_guarded_var' attribute only applies to fields and global variables}}

void pgv_testfn(int y){
  int *x __attribute__((pt_guarded_var)) = new int(0); // \
    expected-warning {{'pt_guarded_var' attribute only applies to fields and global variables}}
  delete x;
}

//-----------------------------------------//
//  Lockable Attribute (l)
//-----------------------------------------//

//FIXME: In future we may want to add support for structs, ObjC classes, etc.

#if !__has_attribute(lockable)
#error "Should support lockable attribute"
#endif

class __attribute__((lockable)) LTestClass {
};

class __attribute__((lockable (1))) LTestClass_args { // \
    expected-error {{attribute takes no arguments}}
};

void l_test_function() __attribute__((lockable));  // \
  expected-warning {{'lockable' attribute only applies to classes}}

int l_testfn(int y) {
  int x __attribute__((lockable)) = y; // \
    expected-warning {{'lockable' attribute only applies to classes}}
  return x;
}

int l_test_var __attribute__((lockable)); // \
  expected-warning {{'lockable' attribute only applies to classes}}

class LFoo {
 private:
  int test_field __attribute__((lockable)); // \
    expected-warning {{'lockable' attribute only applies to classes}}
  void test_method() __attribute__((lockable)); // \
    expected-warning {{'lockable' attribute only applies to classes}}
};


void l_function_params(int lvar __attribute__((lockable))); // \
  expected-warning {{'lockable' attribute only applies to classes}}


//-----------------------------------------//
//  Scoped Lockable Attribute (sl)
//-----------------------------------------//

#if !__has_attribute(scoped_lockable)
#error "Should support scoped_lockable attribute"
#endif

class __attribute__((scoped_lockable)) SLTestClass {
};

class __attribute__((scoped_lockable (1))) SLTestClass_args { // \
    expected-error {{attribute takes no arguments}}
};

void sl_test_function() __attribute__((scoped_lockable));  // \
  expected-warning {{'scoped_lockable' attribute only applies to classes}}

int sl_testfn(int y) {
  int x __attribute__((scoped_lockable)) = y; // \
    expected-warning {{'scoped_lockable' attribute only applies to classes}}
  return x;
}

int sl_test_var __attribute__((scoped_lockable)); // \
  expected-warning {{'scoped_lockable' attribute only applies to classes}}

class SLFoo {
 private:
  int test_field __attribute__((scoped_lockable)); // \
    expected-warning {{'scoped_lockable' attribute only applies to classes}}
  void test_method() __attribute__((scoped_lockable)); // \
    expected-warning {{'scoped_lockable' attribute only applies to classes}}
};


void sl_function_params(int lvar __attribute__((scoped_lockable))); // \
  expected-warning {{'scoped_lockable' attribute only applies to classes}}


//-----------------------------------------//
//  Guarded By Attribute (gb)
//-----------------------------------------//

// FIXME: Eventually, would we like this attribute to take more than 1 arg?

#if !__has_attribute(guarded_by)
#error "Should support guarded_by attribute"
#endif

//1. Check applied to the right types & argument number

int gb_var_arg __attribute__((guarded_by(mu1)));

int gb_var_args __attribute__((guarded_by(mu1, mu2))); // \
  expected-error {{attribute takes one argument}}

int gb_var_noargs __attribute__((guarded_by)); // \
  expected-error {{attribute takes one argument}}

class GBFoo {
 private:
  int gb_field_noargs __attribute__((guarded_by)); // \
    expected-error {{attribute takes one argument}}
  int gb_field_args __attribute__((guarded_by(mu1)));
};

class __attribute__((guarded_by(mu1))) GB { // \
      expected-warning {{'guarded_by' attribute only applies to fields and global variables}}
};

void gb_function() __attribute__((guarded_by(mu1))); // \
    expected-warning {{'guarded_by' attribute only applies to fields and global variables}}

void gb_function_params(int gv_lvar __attribute__((guarded_by(mu1)))); // \
    expected-warning {{'guarded_by' attribute only applies to fields and global variables}}

int gb_testfn(int y){
  int x __attribute__((guarded_by(mu1))) = y; // \
      expected-warning {{'guarded_by' attribute only applies to fields and global variables}}
  return x;
}

//2. Check argument parsing.

// legal attribute arguments
int gb_var_arg_1 __attribute__((guarded_by(muWrapper.mu)));
int gb_var_arg_2 __attribute__((guarded_by(muDoubleWrapper.muWrapper->mu)));
int gb_var_arg_3 __attribute__((guarded_by(muWrapper.getMu())));
int gb_var_arg_4 __attribute__((guarded_by(*muWrapper.getMuPointer())));
int gb_var_arg_5 __attribute__((guarded_by(&mu1)));
int gb_var_arg_6 __attribute__((guarded_by(muRef)));
int gb_var_arg_7 __attribute__((guarded_by(muDoubleWrapper.getWrapper()->getMu())));
int gb_var_arg_8 __attribute__((guarded_by(muPointer)));


// illegal attribute arguments
int gb_var_arg_bad_1 __attribute__((guarded_by(1))); // \
  expected-error {{'guarded_by' attribute requires arguments that are class type or point to class type}}
int gb_var_arg_bad_2 __attribute__((guarded_by("mu"))); // \
  expected-error {{'guarded_by' attribute requires arguments that are class type or point to class type}}
int gb_var_arg_bad_3 __attribute__((guarded_by(muDoublePointer))); // \
  expected-error {{'guarded_by' attribute requires arguments that are class type or point to class type}}
int gb_var_arg_bad_4 __attribute__((guarded_by(umu))); // \
  expected-error {{'guarded_by' attribute requires arguments whose type is annotated with 'lockable' attribute}}

//3.
// Thread Safety analysis tests


//-----------------------------------------//
//  Pt Guarded By Attribute (pgb)
//-----------------------------------------//

#if !__has_attribute(pt_guarded_by)
#error "Should support pt_guarded_by attribute"
#endif

//1. Check applied to the right types & argument number

int *pgb_var_noargs __attribute__((pt_guarded_by)); // \
  expected-error {{attribute takes one argument}}

int *pgb_ptr_var_arg __attribute__((pt_guarded_by(mu1)));

int *pgb_ptr_var_args __attribute__((guarded_by(mu1, mu2))); // \
  expected-error {{attribute takes one argument}}

int pgb_var_args __attribute__((pt_guarded_by(mu1))); // \
    expected-warning {{'pt_guarded_by' only applies to pointer types; type here is 'int'}}

class PGBFoo {
 private:
  int *pgb_field_noargs __attribute__((pt_guarded_by)); // \
    expected-error {{attribute takes one argument}}
  int *pgb_field_args __attribute__((pt_guarded_by(mu1)));
};

class __attribute__((pt_guarded_by(mu1))) PGB { // \
      expected-warning {{'pt_guarded_by' attribute only applies to fields and global variables}}
};

void pgb_function() __attribute__((pt_guarded_by(mu1))); // \
    expected-warning {{'pt_guarded_by' attribute only applies to fields and global variables}}

void pgb_function_params(int gv_lvar __attribute__((pt_guarded_by(mu1)))); // \
    expected-warning {{'pt_guarded_by' attribute only applies to fields and global variables}}

void pgb_testfn(int y){
  int *x __attribute__((pt_guarded_by(mu1))) = new int(0); // \
      expected-warning {{'pt_guarded_by' attribute only applies to fields and global variables}}
  delete x;
}

//2. Check argument parsing.

// legal attribute arguments
int * pgb_var_arg_1 __attribute__((pt_guarded_by(muWrapper.mu)));
int * pgb_var_arg_2 __attribute__((pt_guarded_by(muDoubleWrapper.muWrapper->mu)));
int * pgb_var_arg_3 __attribute__((pt_guarded_by(muWrapper.getMu())));
int * pgb_var_arg_4 __attribute__((pt_guarded_by(*muWrapper.getMuPointer())));
int * pgb_var_arg_5 __attribute__((pt_guarded_by(&mu1)));
int * pgb_var_arg_6 __attribute__((pt_guarded_by(muRef)));
int * pgb_var_arg_7 __attribute__((pt_guarded_by(muDoubleWrapper.getWrapper()->getMu())));
int * pgb_var_arg_8 __attribute__((pt_guarded_by(muPointer)));


// illegal attribute arguments
int * pgb_var_arg_bad_1 __attribute__((pt_guarded_by(1))); // \
  expected-error {{'pt_guarded_by' attribute requires arguments that are class type or point to class type}}
int * pgb_var_arg_bad_2 __attribute__((pt_guarded_by("mu"))); // \
  expected-error {{'pt_guarded_by' attribute requires arguments that are class type or point to class type}}
int * pgb_var_arg_bad_3 __attribute__((pt_guarded_by(muDoublePointer))); // \
  expected-error {{'pt_guarded_by' attribute requires arguments that are class type or point to class type}}
int * pgb_var_arg_bad_4 __attribute__((pt_guarded_by(umu))); // \
  expected-error {{'pt_guarded_by' attribute requires arguments whose type is annotated with 'lockable' attribute}}


//-----------------------------------------//
//  Acquired After (aa)
//-----------------------------------------//

// FIXME: Would we like this attribute to take more than 1 arg?

#if !__has_attribute(acquired_after)
#error "Should support acquired_after attribute"
#endif

Mu mu_aa __attribute__((acquired_after(mu1)));

Mu aa_var_noargs __attribute__((acquired_after)); // \
  expected-error {{attribute takes at least 1 argument}}

class AAFoo {
 private:
  Mu aa_field_noargs __attribute__((acquired_after)); // \
    expected-error {{attribute takes at least 1 argument}}
  Mu aa_field_args __attribute__((acquired_after(mu1)));
};

class __attribute__((acquired_after(mu1))) AA { // \
      expected-warning {{'acquired_after' attribute only applies to fields and global variables}}
};

void aa_function() __attribute__((acquired_after(mu1))); // \
    expected-warning {{'acquired_after' attribute only applies to fields and global variables}}

void aa_function_params(int gv_lvar __attribute__((acquired_after(mu1)))); // \
    expected-warning {{'acquired_after' attribute only applies to fields and global variables}}

void aa_testfn(int y){
  Mu x __attribute__((acquired_after(mu1))) = Mu(); // \
      expected-warning {{'acquired_after' attribute only applies to fields and global variables}}
}

//Check argument parsing.

// legal attribute arguments
Mu aa_var_arg_1 __attribute__((acquired_after(muWrapper.mu)));
Mu aa_var_arg_2 __attribute__((acquired_after(muDoubleWrapper.muWrapper->mu)));
Mu aa_var_arg_3 __attribute__((acquired_after(muWrapper.getMu())));
Mu aa_var_arg_4 __attribute__((acquired_after(*muWrapper.getMuPointer())));
Mu aa_var_arg_5 __attribute__((acquired_after(&mu1)));
Mu aa_var_arg_6 __attribute__((acquired_after(muRef)));
Mu aa_var_arg_7 __attribute__((acquired_after(muDoubleWrapper.getWrapper()->getMu())));
Mu aa_var_arg_8 __attribute__((acquired_after(muPointer)));


// illegal attribute arguments
Mu aa_var_arg_bad_1 __attribute__((acquired_after(1))); // \
  expected-error {{'acquired_after' attribute requires arguments that are class type or point to class type}}
Mu aa_var_arg_bad_2 __attribute__((acquired_after("mu"))); // \
  expected-error {{'acquired_after' attribute requires arguments that are class type or point to class type}}
Mu aa_var_arg_bad_3 __attribute__((acquired_after(muDoublePointer))); // \
  expected-error {{'acquired_after' attribute requires arguments that are class type or point to class type}}
Mu aa_var_arg_bad_4 __attribute__((acquired_after(umu))); // \
  expected-error {{'acquired_after' attribute requires arguments whose type is annotated with 'lockable' attribute}}
UnlockableMu aa_var_arg_bad_5 __attribute__((acquired_after(mu_aa))); // \
  expected-error {{'acquired_after' attribute can only be applied in a context annotated with 'lockable' attribute}}

//-----------------------------------------//
//  Acquired Before (ab)
//-----------------------------------------//

#if !__has_attribute(acquired_before)
#error "Should support acquired_before attribute"
#endif

Mu mu_ab __attribute__((acquired_before(mu1)));

Mu ab_var_noargs __attribute__((acquired_before)); // \
  expected-error {{attribute takes at least 1 argument}}

class ABFoo {
 private:
  Mu ab_field_noargs __attribute__((acquired_before)); // \
    expected-error {{attribute takes at least 1 argument}}
  Mu ab_field_args __attribute__((acquired_before(mu1)));
};

class __attribute__((acquired_before(mu1))) AB { // \
      expected-warning {{'acquired_before' attribute only applies to fields and global variables}}
};

void ab_function() __attribute__((acquired_before(mu1))); // \
    expected-warning {{'acquired_before' attribute only applies to fields and global variables}}

void ab_function_params(int gv_lvar __attribute__((acquired_before(mu1)))); // \
    expected-warning {{'acquired_before' attribute only applies to fields and global variables}}

void ab_testfn(int y){
  Mu x __attribute__((acquired_before(mu1))) = Mu(); // \
      expected-warning {{'acquired_before' attribute only applies to fields and global variables}}
}

// Note: illegal int ab_int __attribute__((acquired_before(mu1))) will
// be taken care of by warnings that ab__int is not lockable.

//Check argument parsing.

// legal attribute arguments
Mu ab_var_arg_1 __attribute__((acquired_before(muWrapper.mu)));
Mu ab_var_arg_2 __attribute__((acquired_before(muDoubleWrapper.muWrapper->mu)));
Mu ab_var_arg_3 __attribute__((acquired_before(muWrapper.getMu())));
Mu ab_var_arg_4 __attribute__((acquired_before(*muWrapper.getMuPointer())));
Mu ab_var_arg_5 __attribute__((acquired_before(&mu1)));
Mu ab_var_arg_6 __attribute__((acquired_before(muRef)));
Mu ab_var_arg_7 __attribute__((acquired_before(muDoubleWrapper.getWrapper()->getMu())));
Mu ab_var_arg_8 __attribute__((acquired_before(muPointer)));


// illegal attribute arguments
Mu ab_var_arg_bad_1 __attribute__((acquired_before(1))); // \
  expected-error {{'acquired_before' attribute requires arguments that are class type or point to class type}}
Mu ab_var_arg_bad_2 __attribute__((acquired_before("mu"))); // \
  expected-error {{'acquired_before' attribute requires arguments that are class type or point to class type}}
Mu ab_var_arg_bad_3 __attribute__((acquired_before(muDoublePointer))); // \
  expected-error {{'acquired_before' attribute requires arguments that are class type or point to class type}}
Mu ab_var_arg_bad_4 __attribute__((acquired_before(umu))); // \
  expected-error {{'acquired_before' attribute requires arguments whose type is annotated with 'lockable' attribute}}
UnlockableMu ab_var_arg_bad_5 __attribute__((acquired_before(mu_ab))); // \
  expected-error {{'acquired_before' attribute can only be applied in a context annotated with 'lockable' attribute}}


//-----------------------------------------//
//  Exclusive Lock Function (elf)
//-----------------------------------------//

#if !__has_attribute(exclusive_lock_function)
#error "Should support exclusive_lock_function attribute"
#endif

// takes zero or more arguments, all locks (vars/fields)

void elf_function() __attribute__((exclusive_lock_function));

void elf_function_args() __attribute__((exclusive_lock_function(mu1, mu2)));

int elf_testfn(int y) __attribute__((exclusive_lock_function));

int elf_testfn(int y) {
  int x __attribute__((exclusive_lock_function)) = y; // \
    expected-warning {{'exclusive_lock_function' attribute only applies to functions and methods}}
  return x;
};

int elf_test_var __attribute__((exclusive_lock_function)); // \
  expected-warning {{'exclusive_lock_function' attribute only applies to functions and methods}}

class ElfFoo {
 private:
  int test_field __attribute__((exclusive_lock_function)); // \
    expected-warning {{'exclusive_lock_function' attribute only applies to functions and methods}}
  void test_method() __attribute__((exclusive_lock_function));
};

class __attribute__((exclusive_lock_function)) ElfTestClass { // \
    expected-warning {{'exclusive_lock_function' attribute only applies to functions and methods}}
};

void elf_fun_params(int lvar __attribute__((exclusive_lock_function))); // \
  expected-warning {{'exclusive_lock_function' attribute only applies to functions and methods}}

// Check argument parsing.

// legal attribute arguments
int elf_function_1() __attribute__((exclusive_lock_function(muWrapper.mu)));
int elf_function_2() __attribute__((exclusive_lock_function(muDoubleWrapper.muWrapper->mu)));
int elf_function_3() __attribute__((exclusive_lock_function(muWrapper.getMu())));
int elf_function_4() __attribute__((exclusive_lock_function(*muWrapper.getMuPointer())));
int elf_function_5() __attribute__((exclusive_lock_function(&mu1)));
int elf_function_6() __attribute__((exclusive_lock_function(muRef)));
int elf_function_7() __attribute__((exclusive_lock_function(muDoubleWrapper.getWrapper()->getMu())));
int elf_function_8() __attribute__((exclusive_lock_function(muPointer)));
int elf_function_9(Mu x) __attribute__((exclusive_lock_function(1)));
int elf_function_9(Mu x, Mu y) __attribute__((exclusive_lock_function(1,2)));


// illegal attribute arguments
int elf_function_bad_2() __attribute__((exclusive_lock_function("mu"))); // \
  expected-error {{'exclusive_lock_function' attribute requires arguments that are class type or point to class type}}
int elf_function_bad_3() __attribute__((exclusive_lock_function(muDoublePointer))); // \
  expected-error {{'exclusive_lock_function' attribute requires arguments that are class type or point to class type}}
int elf_function_bad_4() __attribute__((exclusive_lock_function(umu))); // \
  expected-error {{'exclusive_lock_function' attribute requires arguments whose type is annotated with 'lockable' attribute}}

int elf_function_bad_1() __attribute__((exclusive_lock_function(1))); // \
  expected-error {{'exclusive_lock_function' attribute parameter 1 is out of bounds: no parameters to index into}}
int elf_function_bad_5(Mu x) __attribute__((exclusive_lock_function(0))); // \
  expected-error {{'exclusive_lock_function' attribute parameter 1 is out of bounds: can only be 1, since there is one parameter}}
int elf_function_bad_6(Mu x, Mu y) __attribute__((exclusive_lock_function(0))); // \
  expected-error {{'exclusive_lock_function' attribute parameter 1 is out of bounds: must be between 1 and 2}}
int elf_function_bad_7() __attribute__((exclusive_lock_function(0))); // \
  expected-error {{'exclusive_lock_function' attribute parameter 1 is out of bounds: no parameters to index into}}


//-----------------------------------------//
//  Shared Lock Function (slf)
//-----------------------------------------//

#if !__has_attribute(shared_lock_function)
#error "Should support shared_lock_function attribute"
#endif

// takes zero or more arguments, all locks (vars/fields)

void slf_function() __attribute__((shared_lock_function));

void slf_function_args() __attribute__((shared_lock_function(mu1, mu2)));

int slf_testfn(int y) __attribute__((shared_lock_function));

int slf_testfn(int y) {
  int x __attribute__((shared_lock_function)) = y; // \
    expected-warning {{'shared_lock_function' attribute only applies to functions and methods}}
  return x;
};

int slf_test_var __attribute__((shared_lock_function)); // \
  expected-warning {{'shared_lock_function' attribute only applies to functions and methods}}

void slf_fun_params(int lvar __attribute__((shared_lock_function))); // \
  expected-warning {{'shared_lock_function' attribute only applies to functions and methods}}

class SlfFoo {
 private:
  int test_field __attribute__((shared_lock_function)); // \
    expected-warning {{'shared_lock_function' attribute only applies to functions and methods}}
  void test_method() __attribute__((shared_lock_function));
};

class __attribute__((shared_lock_function)) SlfTestClass { // \
    expected-warning {{'shared_lock_function' attribute only applies to functions and methods}}
};

// Check argument parsing.

// legal attribute arguments
int slf_function_1() __attribute__((shared_lock_function(muWrapper.mu)));
int slf_function_2() __attribute__((shared_lock_function(muDoubleWrapper.muWrapper->mu)));
int slf_function_3() __attribute__((shared_lock_function(muWrapper.getMu())));
int slf_function_4() __attribute__((shared_lock_function(*muWrapper.getMuPointer())));
int slf_function_5() __attribute__((shared_lock_function(&mu1)));
int slf_function_6() __attribute__((shared_lock_function(muRef)));
int slf_function_7() __attribute__((shared_lock_function(muDoubleWrapper.getWrapper()->getMu())));
int slf_function_8() __attribute__((shared_lock_function(muPointer)));
int slf_function_9(Mu x) __attribute__((shared_lock_function(1)));
int slf_function_9(Mu x, Mu y) __attribute__((shared_lock_function(1,2)));


// illegal attribute arguments
int slf_function_bad_2() __attribute__((shared_lock_function("mu"))); // \
  expected-error {{'shared_lock_function' attribute requires arguments that are class type or point to class type}}
int slf_function_bad_3() __attribute__((shared_lock_function(muDoublePointer))); // \
  expected-error {{'shared_lock_function' attribute requires arguments that are class type or point to class type}}
int slf_function_bad_4() __attribute__((shared_lock_function(umu))); // \
  expected-error {{'shared_lock_function' attribute requires arguments whose type is annotated with 'lockable' attribute}}

int slf_function_bad_1() __attribute__((shared_lock_function(1))); // \
  expected-error {{'shared_lock_function' attribute parameter 1 is out of bounds: no parameters to index into}}
int slf_function_bad_5(Mu x) __attribute__((shared_lock_function(0))); // \
  expected-error {{'shared_lock_function' attribute parameter 1 is out of bounds: can only be 1, since there is one parameter}}
int slf_function_bad_6(Mu x, Mu y) __attribute__((shared_lock_function(0))); // \
  expected-error {{'shared_lock_function' attribute parameter 1 is out of bounds: must be between 1 and 2}}
int slf_function_bad_7() __attribute__((shared_lock_function(0))); // \
  expected-error {{'shared_lock_function' attribute parameter 1 is out of bounds: no parameters to index into}}


//-----------------------------------------//
//  Exclusive TryLock Function (etf)
//-----------------------------------------//

#if !__has_attribute(exclusive_trylock_function)
#error "Should support exclusive_trylock_function attribute"
#endif

// takes a mandatory boolean or integer argument specifying the retval
// plus an optional list of locks (vars/fields)

void etf_function() __attribute__((exclusive_trylock_function));  // \
  expected-error {{attribute takes attribute takes at least 1 argument arguments}}

void etf_function_args() __attribute__((exclusive_trylock_function(1, mu2)));

void etf_function_arg() __attribute__((exclusive_trylock_function(1)));

int etf_testfn(int y) __attribute__((exclusive_trylock_function(1)));

int etf_testfn(int y) {
  int x __attribute__((exclusive_trylock_function(1))) = y; // \
    expected-warning {{'exclusive_trylock_function' attribute only applies to functions and methods}}
  return x;
};

int etf_test_var __attribute__((exclusive_trylock_function(1))); // \
  expected-warning {{'exclusive_trylock_function' attribute only applies to functions and methods}}

class EtfFoo {
 private:
  int test_field __attribute__((exclusive_trylock_function(1))); // \
    expected-warning {{'exclusive_trylock_function' attribute only applies to functions and methods}}
  void test_method() __attribute__((exclusive_trylock_function(1)));
};

class __attribute__((exclusive_trylock_function(1))) EtfTestClass { // \
    expected-warning {{'exclusive_trylock_function' attribute only applies to functions and methods}}
};

void etf_fun_params(int lvar __attribute__((exclusive_trylock_function(1)))); // \
  expected-warning {{'exclusive_trylock_function' attribute only applies to functions and methods}}

// Check argument parsing.

// legal attribute arguments
int etf_function_1() __attribute__((exclusive_trylock_function(1, muWrapper.mu)));
int etf_function_2() __attribute__((exclusive_trylock_function(1, muDoubleWrapper.muWrapper->mu)));
int etf_function_3() __attribute__((exclusive_trylock_function(1, muWrapper.getMu())));
int etf_function_4() __attribute__((exclusive_trylock_function(1, *muWrapper.getMuPointer())));
int etf_function_5() __attribute__((exclusive_trylock_function(1, &mu1)));
int etf_function_6() __attribute__((exclusive_trylock_function(1, muRef)));
int etf_function_7() __attribute__((exclusive_trylock_function(1, muDoubleWrapper.getWrapper()->getMu())));
int etf_functetfn_8() __attribute__((exclusive_trylock_function(1, muPointer)));
int etf_function_9() __attribute__((exclusive_trylock_function(true)));


// illegal attribute arguments
int etf_function_bad_1() __attribute__((exclusive_trylock_function(mu1))); // \
  expected-error {{'exclusive_trylock_function' attribute first argument must be of int or bool type}}
int etf_function_bad_2() __attribute__((exclusive_trylock_function("mu"))); // \
  expected-error {{'exclusive_trylock_function' attribute first argument must be of int or bool type}}
int etf_function_bad_3() __attribute__((exclusive_trylock_function(muDoublePointer))); // \
  expected-error {{'exclusive_trylock_function' attribute first argument must be of int or bool type}}

int etf_function_bad_4() __attribute__((exclusive_trylock_function(1, "mu"))); // \
  expected-error {{'exclusive_trylock_function' attribute requires arguments that are class type or point to class type}}
int etf_function_bad_5() __attribute__((exclusive_trylock_function(1, muDoublePointer))); // \
  expected-error {{'exclusive_trylock_function' attribute requires arguments that are class type or point to class type}}
int etf_function_bad_6() __attribute__((exclusive_trylock_function(1, umu))); // \
  expected-error {{'exclusive_trylock_function' attribute requires arguments whose type is annotated with 'lockable' attribute}}


//-----------------------------------------//
//  Shared TryLock Function (stf)
//-----------------------------------------//

#if !__has_attribute(shared_trylock_function)
#error "Should support shared_trylock_function attribute"
#endif

// takes a mandatory boolean or integer argument specifying the retval
// plus an optional list of locks (vars/fields)

void stf_function() __attribute__((shared_trylock_function));  // \
  expected-error {{attribute takes at least 1 argument}}

void stf_function_args() __attribute__((shared_trylock_function(1, mu2)));

void stf_function_arg() __attribute__((shared_trylock_function(1)));

int stf_testfn(int y) __attribute__((shared_trylock_function(1)));

int stf_testfn(int y) {
  int x __attribute__((shared_trylock_function(1))) = y; // \
    expected-warning {{'shared_trylock_function' attribute only applies to functions and methods}}
  return x;
};

int stf_test_var __attribute__((shared_trylock_function(1))); // \
  expected-warning {{'shared_trylock_function' attribute only applies to functions and methods}}

void stf_fun_params(int lvar __attribute__((shared_trylock_function(1)))); // \
  expected-warning {{'shared_trylock_function' attribute only applies to functions and methods}}


class StfFoo {
 private:
  int test_field __attribute__((shared_trylock_function(1))); // \
    expected-warning {{'shared_trylock_function' attribute only applies to functions and methods}}
  void test_method() __attribute__((shared_trylock_function(1)));
};

class __attribute__((shared_trylock_function(1))) StfTestClass { // \
    expected-warning {{'shared_trylock_function' attribute only applies to functions and methods}}
};

// Check argument parsing.

// legal attribute arguments
int stf_function_1() __attribute__((shared_trylock_function(1, muWrapper.mu)));
int stf_function_2() __attribute__((shared_trylock_function(1, muDoubleWrapper.muWrapper->mu)));
int stf_function_3() __attribute__((shared_trylock_function(1, muWrapper.getMu())));
int stf_function_4() __attribute__((shared_trylock_function(1, *muWrapper.getMuPointer())));
int stf_function_5() __attribute__((shared_trylock_function(1, &mu1)));
int stf_function_6() __attribute__((shared_trylock_function(1, muRef)));
int stf_function_7() __attribute__((shared_trylock_function(1, muDoubleWrapper.getWrapper()->getMu())));
int stf_function_8() __attribute__((shared_trylock_function(1, muPointer)));
int stf_function_9() __attribute__((shared_trylock_function(true)));


// illegal attribute arguments
int stf_function_bad_1() __attribute__((shared_trylock_function(mu1))); // \
  expected-error {{'shared_trylock_function' attribute first argument must be of int or bool type}}
int stf_function_bad_2() __attribute__((shared_trylock_function("mu"))); // \
  expected-error {{'shared_trylock_function' attribute first argument must be of int or bool type}}
int stf_function_bad_3() __attribute__((shared_trylock_function(muDoublePointer))); // \
  expected-error {{'shared_trylock_function' attribute first argument must be of int or bool type}}

int stf_function_bad_4() __attribute__((shared_trylock_function(1, "mu"))); // \
  expected-error {{'shared_trylock_function' attribute requires arguments that are class type or point to class type}}
int stf_function_bad_5() __attribute__((shared_trylock_function(1, muDoublePointer))); // \
  expected-error {{'shared_trylock_function' attribute requires arguments that are class type or point to class type}}
int stf_function_bad_6() __attribute__((shared_trylock_function(1, umu))); // \
  expected-error {{'shared_trylock_function' attribute requires arguments whose type is annotated with 'lockable' attribute}}


//-----------------------------------------//
//  Unlock Function (uf)
//-----------------------------------------//

#if !__has_attribute(unlock_function)
#error "Should support unlock_function attribute"
#endif

// takes zero or more arguments, all locks (vars/fields)

void uf_function() __attribute__((unlock_function));

void uf_function_args() __attribute__((unlock_function(mu1, mu2)));

int uf_testfn(int y) __attribute__((unlock_function));

int uf_testfn(int y) {
  int x __attribute__((unlock_function)) = y; // \
    expected-warning {{'unlock_function' attribute only applies to functions and methods}}
  return x;
};

int uf_test_var __attribute__((unlock_function)); // \
  expected-warning {{'unlock_function' attribute only applies to functions and methods}}

class UfFoo {
 private:
  int test_field __attribute__((unlock_function)); // \
    expected-warning {{'unlock_function' attribute only applies to functions and methods}}
  void test_method() __attribute__((unlock_function));
};

class __attribute__((no_thread_safety_analysis)) UfTestClass { // \
    expected-warning {{'no_thread_safety_analysis' attribute only applies to functions and methods}}
};

void uf_fun_params(int lvar __attribute__((unlock_function))); // \
  expected-warning {{'unlock_function' attribute only applies to functions and methods}}

// Check argument parsing.

// legal attribute arguments
int uf_function_1() __attribute__((unlock_function(muWrapper.mu)));
int uf_function_2() __attribute__((unlock_function(muDoubleWrapper.muWrapper->mu)));
int uf_function_3() __attribute__((unlock_function(muWrapper.getMu())));
int uf_function_4() __attribute__((unlock_function(*muWrapper.getMuPointer())));
int uf_function_5() __attribute__((unlock_function(&mu1)));
int uf_function_6() __attribute__((unlock_function(muRef)));
int uf_function_7() __attribute__((unlock_function(muDoubleWrapper.getWrapper()->getMu())));
int uf_function_8() __attribute__((unlock_function(muPointer)));
int uf_function_9(Mu x) __attribute__((unlock_function(1)));
int uf_function_9(Mu x, Mu y) __attribute__((unlock_function(1,2)));


// illegal attribute arguments
int uf_function_bad_2() __attribute__((unlock_function("mu"))); // \
  expected-error {{'unlock_function' attribute requires arguments that are class type or point to class type}}
int uf_function_bad_3() __attribute__((unlock_function(muDoublePointer))); // \
expected-error {{'unlock_function' attribute requires arguments that are class type or point to class type}}
int uf_function_bad_4() __attribute__((unlock_function(umu))); // \
  expected-error {{'unlock_function' attribute requires arguments whose type is annotated with 'lockable' attribute}}

int uf_function_bad_1() __attribute__((unlock_function(1))); // \
  expected-error {{'unlock_function' attribute parameter 1 is out of bounds: no parameters to index into}}
int uf_function_bad_5(Mu x) __attribute__((unlock_function(0))); // \
  expected-error {{'unlock_function' attribute parameter 1 is out of bounds: can only be 1, since there is one parameter}}
int uf_function_bad_6(Mu x, Mu y) __attribute__((unlock_function(0))); // \
  expected-error {{'unlock_function' attribute parameter 1 is out of bounds: must be between 1 and 2}}
int uf_function_bad_7() __attribute__((unlock_function(0))); // \
  expected-error {{'unlock_function' attribute parameter 1 is out of bounds: no parameters to index into}}


//-----------------------------------------//
//  Lock Returned (lr)
//-----------------------------------------//

#if !__has_attribute(lock_returned)
#error "Should support lock_returned attribute"
#endif

// Takes exactly one argument, a var/field

void lr_function() __attribute__((lock_returned)); // \
  expected-error {{attribute takes one argument}}

void lr_function_arg() __attribute__((lock_returned(mu1)));

void lr_function_args() __attribute__((lock_returned(mu1, mu2))); // \
  expected-error {{attribute takes one argument}}

int lr_testfn(int y) __attribute__((lock_returned(mu1)));

int lr_testfn(int y) {
  int x __attribute__((lock_returned(mu1))) = y; // \
    expected-warning {{'lock_returned' attribute only applies to functions and methods}}
  return x;
};

int lr_test_var __attribute__((lock_returned(mu1))); // \
  expected-warning {{'lock_returned' attribute only applies to functions and methods}}

void lr_fun_params(int lvar __attribute__((lock_returned(mu1)))); // \
  expected-warning {{'lock_returned' attribute only applies to functions and methods}}

class LrFoo {
 private:
  int test_field __attribute__((lock_returned(mu1))); // \
    expected-warning {{'lock_returned' attribute only applies to functions and methods}}
  void test_method() __attribute__((lock_returned(mu1)));
};

class __attribute__((lock_returned(mu1))) LrTestClass { // \
    expected-warning {{'lock_returned' attribute only applies to functions and methods}}
};

// Check argument parsing.

// legal attribute arguments
int lr_function_1() __attribute__((lock_returned(muWrapper.mu)));
int lr_function_2() __attribute__((lock_returned(muDoubleWrapper.muWrapper->mu)));
int lr_function_3() __attribute__((lock_returned(muWrapper.getMu())));
int lr_function_4() __attribute__((lock_returned(*muWrapper.getMuPointer())));
int lr_function_5() __attribute__((lock_returned(&mu1)));
int lr_function_6() __attribute__((lock_returned(muRef)));
int lr_function_7() __attribute__((lock_returned(muDoubleWrapper.getWrapper()->getMu())));
int lr_function_8() __attribute__((lock_returned(muPointer)));


// illegal attribute arguments
int lr_function_bad_1() __attribute__((lock_returned(1))); // \
  expected-error {{'lock_returned' attribute requires arguments that are class type or point to class type}}
int lr_function_bad_2() __attribute__((lock_returned("mu"))); // \
  expected-error {{'lock_returned' attribute requires arguments that are class type or point to class type}}
int lr_function_bad_3() __attribute__((lock_returned(muDoublePointer))); // \
  expected-error {{'lock_returned' attribute requires arguments that are class type or point to class type}}
int lr_function_bad_4() __attribute__((lock_returned(umu))); // \
  expected-error {{'lock_returned' attribute requires arguments whose type is annotated with 'lockable' attribute}}



//-----------------------------------------//
//  Locks Excluded (le)
//-----------------------------------------//

#if !__has_attribute(locks_excluded)
#error "Should support locks_excluded attribute"
#endif

// takes one or more arguments, all locks (vars/fields)

void le_function() __attribute__((locks_excluded)); // \
  expected-error {{attribute takes at least 1 argument}}

void le_function_arg() __attribute__((locks_excluded(mu1)));

void le_function_args() __attribute__((locks_excluded(mu1, mu2)));

int le_testfn(int y) __attribute__((locks_excluded(mu1)));

int le_testfn(int y) {
  int x __attribute__((locks_excluded(mu1))) = y; // \
    expected-warning {{'locks_excluded' attribute only applies to functions and methods}}
  return x;
};

int le_test_var __attribute__((locks_excluded(mu1))); // \
  expected-warning {{'locks_excluded' attribute only applies to functions and methods}}

void le_fun_params(int lvar __attribute__((locks_excluded(mu1)))); // \
  expected-warning {{'locks_excluded' attribute only applies to functions and methods}}

class LeFoo {
 private:
  int test_field __attribute__((locks_excluded(mu1))); // \
    expected-warning {{'locks_excluded' attribute only applies to functions and methods}}
  void test_method() __attribute__((locks_excluded(mu1)));
};

class __attribute__((locks_excluded(mu1))) LeTestClass { // \
    expected-warning {{'locks_excluded' attribute only applies to functions and methods}}
};

// Check argument parsing.

// legal attribute arguments
int le_function_1() __attribute__((locks_excluded(muWrapper.mu)));
int le_function_2() __attribute__((locks_excluded(muDoubleWrapper.muWrapper->mu)));
int le_function_3() __attribute__((locks_excluded(muWrapper.getMu())));
int le_function_4() __attribute__((locks_excluded(*muWrapper.getMuPointer())));
int le_function_5() __attribute__((locks_excluded(&mu1)));
int le_function_6() __attribute__((locks_excluded(muRef)));
int le_function_7() __attribute__((locks_excluded(muDoubleWrapper.getWrapper()->getMu())));
int le_function_8() __attribute__((locks_excluded(muPointer)));


// illegal attribute arguments
int le_function_bad_1() __attribute__((locks_excluded(1))); // \
  expected-error {{'locks_excluded' attribute requires arguments that are class type or point to class type}}
int le_function_bad_2() __attribute__((locks_excluded("mu"))); // \
  expected-error {{'locks_excluded' attribute requires arguments that are class type or point to class type}}
int le_function_bad_3() __attribute__((locks_excluded(muDoublePointer))); // \
  expected-error {{'locks_excluded' attribute requires arguments that are class type or point to class type}}
int le_function_bad_4() __attribute__((locks_excluded(umu))); // \
  expected-error {{'locks_excluded' attribute requires arguments whose type is annotated with 'lockable' attribute}}



//-----------------------------------------//
//  Exclusive Locks Required (elr)
//-----------------------------------------//

#if !__has_attribute(exclusive_locks_required)
#error "Should support exclusive_locks_required attribute"
#endif

// takes one or more arguments, all locks (vars/fields)

void elr_function() __attribute__((exclusive_locks_required)); // \
  expected-error {{attribute takes at least 1 argument}}

void elr_function_arg() __attribute__((exclusive_locks_required(mu1)));

void elr_function_args() __attribute__((exclusive_locks_required(mu1, mu2)));

int elr_testfn(int y) __attribute__((exclusive_locks_required(mu1)));

int elr_testfn(int y) {
  int x __attribute__((exclusive_locks_required(mu1))) = y; // \
    expected-warning {{'exclusive_locks_required' attribute only applies to functions and methods}}
  return x;
};

int elr_test_var __attribute__((exclusive_locks_required(mu1))); // \
  expected-warning {{'exclusive_locks_required' attribute only applies to functions and methods}}

void elr_fun_params(int lvar __attribute__((exclusive_locks_required(mu1)))); // \
  expected-warning {{'exclusive_locks_required' attribute only applies to functions and methods}}

class ElrFoo {
 private:
  int test_field __attribute__((exclusive_locks_required(mu1))); // \
    expected-warning {{'exclusive_locks_required' attribute only applies to functions and methods}}
  void test_method() __attribute__((exclusive_locks_required(mu1)));
};

class __attribute__((exclusive_locks_required(mu1))) ElrTestClass { // \
    expected-warning {{'exclusive_locks_required' attribute only applies to functions and methods}}
};

// Check argument parsing.

// legal attribute arguments
int elr_function_1() __attribute__((exclusive_locks_required(muWrapper.mu)));
int elr_function_2() __attribute__((exclusive_locks_required(muDoubleWrapper.muWrapper->mu)));
int elr_function_3() __attribute__((exclusive_locks_required(muWrapper.getMu())));
int elr_function_4() __attribute__((exclusive_locks_required(*muWrapper.getMuPointer())));
int elr_function_5() __attribute__((exclusive_locks_required(&mu1)));
int elr_function_6() __attribute__((exclusive_locks_required(muRef)));
int elr_function_7() __attribute__((exclusive_locks_required(muDoubleWrapper.getWrapper()->getMu())));
int elr_function_8() __attribute__((exclusive_locks_required(muPointer)));


// illegal attribute arguments
int elr_function_bad_1() __attribute__((exclusive_locks_required(1))); // \
  expected-error {{'exclusive_locks_required' attribute requires arguments that are class type or point to class type}}
int elr_function_bad_2() __attribute__((exclusive_locks_required("mu"))); // \
  expected-error {{'exclusive_locks_required' attribute requires arguments that are class type or point to class type}}
int elr_function_bad_3() __attribute__((exclusive_locks_required(muDoublePointer))); // \
  expected-error {{'exclusive_locks_required' attribute requires arguments that are class type or point to class type}}
int elr_function_bad_4() __attribute__((exclusive_locks_required(umu))); // \
  expected-error {{'exclusive_locks_required' attribute requires arguments whose type is annotated with 'lockable' attribute}}




//-----------------------------------------//
//  Shared Locks Required (slr)
//-----------------------------------------//

#if !__has_attribute(shared_locks_required)
#error "Should support shared_locks_required attribute"
#endif

// takes one or more arguments, all locks (vars/fields)

void slr_function() __attribute__((shared_locks_required)); // \
  expected-error {{attribute takes at least 1 argument}}

void slr_function_arg() __attribute__((shared_locks_required(mu1)));

void slr_function_args() __attribute__((shared_locks_required(mu1, mu2)));

int slr_testfn(int y) __attribute__((shared_locks_required(mu1)));

int slr_testfn(int y) {
  int x __attribute__((shared_locks_required(mu1))) = y; // \
    expected-warning {{'shared_locks_required' attribute only applies to functions and methods}}
  return x;
};

int slr_test_var __attribute__((shared_locks_required(mu1))); // \
  expected-warning {{'shared_locks_required' attribute only applies to functions and methods}}

void slr_fun_params(int lvar __attribute__((shared_locks_required(mu1)))); // \
  expected-warning {{'shared_locks_required' attribute only applies to functions and methods}}

class SlrFoo {
 private:
  int test_field __attribute__((shared_locks_required(mu1))); // \
    expected-warning {{'shared_locks_required' attribute only applies to functions and methods}}
  void test_method() __attribute__((shared_locks_required(mu1)));
};

class __attribute__((shared_locks_required(mu1))) SlrTestClass { // \
    expected-warning {{'shared_locks_required' attribute only applies to functions and methods}}
};

// Check argument parsing.

// legal attribute arguments
int slr_function_1() __attribute__((shared_locks_required(muWrapper.mu)));
int slr_function_2() __attribute__((shared_locks_required(muDoubleWrapper.muWrapper->mu)));
int slr_function_3() __attribute__((shared_locks_required(muWrapper.getMu())));
int slr_function_4() __attribute__((shared_locks_required(*muWrapper.getMuPointer())));
int slr_function_5() __attribute__((shared_locks_required(&mu1)));
int slr_function_6() __attribute__((shared_locks_required(muRef)));
int slr_function_7() __attribute__((shared_locks_required(muDoubleWrapper.getWrapper()->getMu())));
int slr_function_8() __attribute__((shared_locks_required(muPointer)));


// illegal attribute arguments
int slr_function_bad_1() __attribute__((shared_locks_required(1))); // \
  expected-error {{'shared_locks_required' attribute requires arguments that are class type or point to class type}}
int slr_function_bad_2() __attribute__((shared_locks_required("mu"))); // \
  expected-error {{'shared_locks_required' attribute requires arguments that are class type or point to class type}}
int slr_function_bad_3() __attribute__((shared_locks_required(muDoublePointer))); // \
  expected-error {{'shared_locks_required' attribute requires arguments that are class type or point to class type}}
int slr_function_bad_4() __attribute__((shared_locks_required(umu))); // \
  expected-error {{'shared_locks_required' attribute requires arguments whose type is annotated with 'lockable' attribute}}


//-----------------------------------------//
//  Regression tests for unusual cases.
//-----------------------------------------//

int trivially_false_edges(bool b) {
  // Create NULL (never taken) edges in CFG
  if (false) return 1;
  else       return 2;
}

// Possible Clang bug -- method pointer in template parameter
class UnFoo {
public:
  void foo();
};

template<void (UnFoo::*methptr)()>
class MCaller {
public:
  static void call_method_ptr(UnFoo *f) {
    // FIXME: Possible Clang bug:
    // getCalleeDecl() returns NULL in the following case:
    (f->*methptr)();
  }
};

void call_method_ptr_inst(UnFoo* f) {
  MCaller<&UnFoo::foo>::call_method_ptr(f);
}

int temp;
void empty_back_edge() {
  // Create a back edge to a block with with no statements
  for (;;) {
    ++temp;
    if (temp > 10) break;
  }
}

struct Foomger {
  void operator++();
};

struct Foomgoper {
  Foomger f;

  bool done();
  void invalid_back_edge() {
    do {
      // FIXME: Possible Clang bug:
      // The first statement in this basic block has no source location
      ++f;
    } while (!done());
  }
};


//-----------------------------------------------------
// Parsing of member variables and function parameters
//------------------------------------------------------

Mu gmu;

class StaticMu {
  static Mu statmu;
};

class FooLate {
public:
  void foo1()           __attribute__((exclusive_locks_required(gmu)))   { }
  void foo2()           __attribute__((exclusive_locks_required(mu)))    { }
  void foo3(Mu *m)      __attribute__((exclusive_locks_required(m)))     { }
  void foo3(FooLate *f) __attribute__((exclusive_locks_required(f->mu))) { }
  void foo4(FooLate *f) __attribute__((exclusive_locks_required(f->mu)));

  static void foo5()    __attribute__((exclusive_locks_required(mu))); // \
    expected-error {{invalid use of member 'mu' in static member function}}

  template <class T>
  void foo6() __attribute__((exclusive_locks_required(T::statmu))) { }

  template <class T>
  void foo7(T* f) __attribute__((exclusive_locks_required(f->mu))) { }

  int a __attribute__((guarded_by(gmu)));
  int b __attribute__((guarded_by(mu)));
  int c __attribute__((guarded_by(this->mu)));

  Mu mu;
};