clang/test/SemaCXX/warn-consumed-parsing.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -Wconsumed -std=c++11 %s
   2
   3 #define CALLABLE_WHEN(...)      __attribute__ ((callable_when(__VA_ARGS__)))
   4 #define CONSUMABLE(state)       __attribute__ ((consumable(state)))
   5 #define SET_TYPESTATE(state)    __attribute__ ((set_typestate(state)))
   6 #define RETURN_TYPESTATE(state) __attribute__ ((return_typestate(state)))
   7 #define TEST_TYPESTATE(state)   __attribute__ ((test_typestate(state)))
   8
   9 // FIXME: This test is here because the warning is issued by the Consumed
  10 //        analysis, not SemaDeclAttr.  The analysis won't run after an error
  11 //        has been issued.  Once the attribute propagation for template
  12 //        instantiation has been fixed, this can be moved somewhere else and the
  13 //        definition can be removed.
  14 int returnTypestateForUnconsumable() RETURN_TYPESTATE(consumed); // expected-warning {{return state set for an unconsumable type 'int'}}
  15 int returnTypestateForUnconsumable() {
  16   return 0;
  17 }
  18
  19 class AttrTester0 {
  20   void consumes()       __attribute__ ((set_typestate())); // expected-error {{'set_typestate' attribute takes one argument}}
  21   bool testUnconsumed() __attribute__ ((test_typestate())); // expected-error {{'test_typestate' attribute takes one argument}}
  22   void callableWhen()   __attribute__ ((callable_when())); // expected-error {{'callable_when' attribute takes at least 1 argument}}
  23 };
  24
  25 int var0 SET_TYPESTATE(consumed); // expected-warning {{'set_typestate' attribute only applies to functions}}
  26 int var1 TEST_TYPESTATE(consumed); // expected-warning {{'test_typestate' attribute only applies to}}
  27 int var2 CALLABLE_WHEN("consumed"); // expected-warning {{'callable_when' attribute only applies to}}
  28 int var3 CONSUMABLE(consumed); // expected-warning {{'consumable' attribute only applies to classes}}
  29 int var4 RETURN_TYPESTATE(consumed); // expected-warning {{'return_typestate' attribute only applies to functions}}
  30
  31 void function0() SET_TYPESTATE(consumed); // expected-warning {{'set_typestate' attribute only applies to}}
  32 void function1() TEST_TYPESTATE(consumed); // expected-warning {{'test_typestate' attribute only applies to}}
  33 void function2() CALLABLE_WHEN("consumed"); // expected-warning {{'callable_when' attribute only applies to}}
  34 void function3() CONSUMABLE(consumed); // expected-warning {{'consumable' attribute only applies to classes}}
  35
  36 class CONSUMABLE(unknown) AttrTester1 {
  37   void callableWhen0()  CALLABLE_WHEN("unconsumed");
  38   void callableWhen1()  CALLABLE_WHEN(42); // expected-error {{'callable_when' attribute requires a string}}
  39   void callableWhen2()  CALLABLE_WHEN("foo"); // expected-warning {{'callable_when' attribute argument not supported: foo}}
  40   void callableWhen3()  CALLABLE_WHEN(unconsumed);
  41   void consumes()       SET_TYPESTATE(consumed);
  42   bool testUnconsumed() TEST_TYPESTATE(consumed);
  43 };
  44
  45 AttrTester1 returnTypestateTester0() RETURN_TYPESTATE(not_a_state); // expected-warning {{'return_typestate' attribute argument not supported: 'not_a_state'}}
  46 AttrTester1 returnTypestateTester1() RETURN_TYPESTATE(42); // expected-error {{'return_typestate' attribute requires an identifier}}
  47
  48 void returnTypestateTester2(AttrTester1 &Param RETURN_TYPESTATE(unconsumed));
  49
  50 class AttrTester2 {
  51   void callableWhen()   CALLABLE_WHEN("unconsumed"); // expected-warning {{consumed analysis attribute is attached to member of class 'AttrTester2' which isn't marked as consumable}}
  52   void consumes()       SET_TYPESTATE(consumed); // expected-warning {{consumed analysis attribute is attached to member of class 'AttrTester2' which isn't marked as consumable}}
  53   bool testUnconsumed() TEST_TYPESTATE(consumed); // expected-warning {{consumed analysis attribute is attached to member of class 'AttrTester2' which isn't marked as consumable}}
  54 };
  55
  56 class CONSUMABLE(42) AttrTester3; // expected-error {{'consumable' attribute requires an identifier}}
  57
  58
  59 class CONSUMABLE(unconsumed)
  60       __attribute__((consumable_auto_cast_state))
  61       __attribute__((consumable_set_state_on_read))
  62       Status {
  63 };
  64
  65
  66