// RUN: %clang_cc1 -fsyntax-only -verify -Wconsumed -fcxx-exceptions -std=c++11 %s // TODO: Switch to using macros for the expected warnings. #define CALLABLE_WHEN(...) __attribute__ ((callable_when(__VA_ARGS__))) #define CONSUMABLE(state) __attribute__ ((consumable(state))) #define PARAM_TYPESTATE(state) __attribute__ ((param_typestate(state))) #define RETURN_TYPESTATE(state) __attribute__ ((return_typestate(state))) #define SET_TYPESTATE(state) __attribute__ ((set_typestate(state))) #define TEST_TYPESTATE(state) __attribute__ ((test_typestate(state))) typedef decltype(nullptr) nullptr_t; template class CONSUMABLE(unconsumed) ConsumableClass { T var; public: ConsumableClass(); ConsumableClass(nullptr_t p) RETURN_TYPESTATE(consumed); ConsumableClass(T val) RETURN_TYPESTATE(unconsumed); ConsumableClass(ConsumableClass &other); ConsumableClass(ConsumableClass &&other); ConsumableClass& operator=(ConsumableClass &other); ConsumableClass& operator=(ConsumableClass &&other); ConsumableClass& operator=(nullptr_t) SET_TYPESTATE(consumed); template ConsumableClass& operator=(ConsumableClass &other); template ConsumableClass& operator=(ConsumableClass &&other); void operator()(int a) SET_TYPESTATE(consumed); void operator*() const CALLABLE_WHEN("unconsumed"); void unconsumedCall() const CALLABLE_WHEN("unconsumed"); void callableWhenUnknown() const CALLABLE_WHEN("unconsumed", "unknown"); bool isValid() const TEST_TYPESTATE(unconsumed); operator bool() const TEST_TYPESTATE(unconsumed); bool operator!=(nullptr_t) const TEST_TYPESTATE(unconsumed); bool operator==(nullptr_t) const TEST_TYPESTATE(consumed); void constCall() const; void nonconstCall(); void consume() SET_TYPESTATE(consumed); void unconsume() SET_TYPESTATE(unconsumed); }; class CONSUMABLE(unconsumed) DestructorTester { public: DestructorTester() RETURN_TYPESTATE(unconsumed); DestructorTester(int); void operator*() CALLABLE_WHEN("unconsumed"); ~DestructorTester() CALLABLE_WHEN("consumed"); }; void baf0(const ConsumableClass var); void baf1(const ConsumableClass &var); void baf2(const ConsumableClass *var); void baf3(ConsumableClass var); void baf4(ConsumableClass &var); void baf5(ConsumableClass *var); void baf6(ConsumableClass &&var); ConsumableClass returnsUnconsumed() { return ConsumableClass(); // expected-warning {{return value not in expected state; expected 'unconsumed', observed 'consumed'}} } ConsumableClass returnsConsumed() RETURN_TYPESTATE(consumed); ConsumableClass returnsConsumed() { return ConsumableClass(); } ConsumableClass returnsUnknown() RETURN_TYPESTATE(unknown); void testInitialization() { ConsumableClass var0; ConsumableClass var1 = ConsumableClass(); var0 = ConsumableClass(); *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} if (var0.isValid()) { *var0; *var1; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} } } void testDestruction() { DestructorTester D0(42), D1(42); *D0; *D1; DestructorTester D2; *D2; D0.~DestructorTester(); // expected-warning {{invalid invocation of method '~DestructorTester' on object 'D0' while it is in the 'unconsumed' state}} return; // expected-warning {{invalid invocation of method '~DestructorTester' on object 'D0' while it is in the 'unconsumed' state}} \ expected-warning {{invalid invocation of method '~DestructorTester' on object 'D1' while it is in the 'unconsumed' state}} \ expected-warning {{invalid invocation of method '~DestructorTester' on object 'D2' while it is in the 'unconsumed' state}} } void testTempValue() { *ConsumableClass(); // expected-warning {{invalid invocation of method 'operator*' on a temporary object while it is in the 'consumed' state}} } void testSimpleRValueRefs() { ConsumableClass var0; ConsumableClass var1(42); *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; var0 = static_cast&&>(var1); *var0; *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } void testIfStmt() { ConsumableClass var; if (var.isValid()) { *var; } else { *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } if (!var.isValid()) { *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } else { *var; } if (var) { // Empty } else { *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } if (var != nullptr) { // Empty } else { *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } if (var == nullptr) { *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } else { // Empty } } void testComplexConditionals0() { ConsumableClass var0, var1, var2; if (var0 && var1) { *var0; *var1; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } if (var0 || var1) { *var0; *var1; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } if (var0 && !var1) { *var0; *var1; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } if (var0 || !var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; *var1; } if (!var0 && !var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; *var1; } if (!var0 || !var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; *var1; } if (!(var0 && var1)) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; *var1; } if (!(var0 || var1)) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; *var1; } if (var0 && var1 && var2) { *var0; *var1; *var2; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} *var2; // expected-warning {{invalid invocation of method 'operator*' on object 'var2' while it is in the 'consumed' state}} } #if 0 // FIXME: Get this test to pass. if (var0 || var1 || var2) { *var0; *var1; *var2; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} *var2; // expected-warning {{invalid invocation of method 'operator*' on object 'var2' while it is in the 'consumed' state}} } #endif } void testComplexConditionals1() { ConsumableClass var0, var1, var2; // Coerce all variables into the unknown state. baf4(var0); baf4(var1); baf4(var2); if (var0 && var1) { *var0; *var1; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } if (var0 || var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } if (var0 && !var1) { *var0; *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } if (var0 || !var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; } if (!var0 && !var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } if (!(var0 || var1)) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } if (!var0 || !var1) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } else { *var0; *var1; } if (!(var0 && var1)) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} } else { *var0; *var1; } if (var0 && var1 && var2) { *var0; *var1; *var2; } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} *var2; // expected-warning {{invalid invocation of method 'operator*' on object 'var2' while it is in the 'unknown' state}} } #if 0 // FIXME: Get this test to pass. if (var0 || var1 || var2) { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'unknown' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'unknown' state}} *var2; // expected-warning {{invalid invocation of method 'operator*' on object 'var2' while it is in the 'unknown' state}} } else { *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} *var2; // expected-warning {{invalid invocation of method 'operator*' on object 'var2' while it is in the 'consumed' state}} } #endif } void testStateChangeInBranch() { ConsumableClass var; // Make var enter the 'unknown' state. baf4(var); if (!var) { var = ConsumableClass(42); } *var; } void testFunctionParam(ConsumableClass param) { if (param.isValid()) { *param; } else { *param; } param = nullptr; *param; // expected-warning {{invocation of method 'operator*' on object 'param' while it is in the 'consumed' state}} } void testParamReturnTypestateCallee(bool cond, ConsumableClass &Param RETURN_TYPESTATE(unconsumed)) { // expected-warning {{parameter 'Param' not in expected state when the function returns: expected 'unconsumed', observed 'consumed'}} if (cond) { Param.consume(); return; // expected-warning {{parameter 'Param' not in expected state when the function returns: expected 'unconsumed', observed 'consumed'}} } Param.consume(); } void testParamReturnTypestateCaller() { ConsumableClass var; testParamReturnTypestateCallee(true, var); *var; } void testParamTypestateCallee(ConsumableClass Param0 PARAM_TYPESTATE(consumed), ConsumableClass &Param1 PARAM_TYPESTATE(consumed)) { *Param0; // expected-warning {{invalid invocation of method 'operator*' on object 'Param0' while it is in the 'consumed' state}} *Param1; // expected-warning {{invalid invocation of method 'operator*' on object 'Param1' while it is in the 'consumed' state}} } void testParamTypestateCaller() { ConsumableClass Var0, Var1(42); testParamTypestateCallee(Var0, Var1); // expected-warning {{argument not in expected state; expected 'consumed', observed 'unconsumed'}} } void baf3(ConsumableClass var) { *var; } void baf4(ConsumableClass &var) { *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'unknown' state}} } void baf6(ConsumableClass &&var) { *var; } void testCallingConventions() { ConsumableClass var(42); baf0(var); *var; baf1(var); *var; baf2(&var); *var; baf4(var); *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'unknown' state}} var = ConsumableClass(42); baf5(&var); *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'unknown' state}} var = ConsumableClass(42); baf6(static_cast&&>(var)); *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } void testConstAndNonConstMemberFunctions() { ConsumableClass var(42); var.constCall(); *var; var.nonconstCall(); *var; } void testFunctionParam0(ConsumableClass param) { *param; } void testFunctionParam1(ConsumableClass ¶m) { *param; // expected-warning {{invalid invocation of method 'operator*' on object 'param' while it is in the 'unknown' state}} } void testReturnStates() { ConsumableClass var; var = returnsUnconsumed(); *var; var = returnsConsumed(); *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } void testCallableWhen() { ConsumableClass var(42); *var; baf4(var); var.callableWhenUnknown(); } void testMoveAsignmentish() { ConsumableClass var0; ConsumableClass var1(42); *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; var0 = static_cast&&>(var1); *var0; *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} var1 = ConsumableClass(42); var1 = nullptr; *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } void testConditionalMerge() { ConsumableClass var; if (var.isValid()) { // Empty } *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} if (var.isValid()) { // Empty } else { // Empty } *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } void testSetTypestate() { ConsumableClass var(42); *var; var.consume(); *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} var.unconsume(); *var; } void testConsumes0() { ConsumableClass var(nullptr); *var; // expected-warning {{invalid invocation of method 'operator*' on object 'var' while it is in the 'consumed' state}} } void testConsumes1() { ConsumableClass var(42); var.unconsumedCall(); var(6); var.unconsumedCall(); // expected-warning {{invalid invocation of method 'unconsumedCall' on object 'var' while it is in the 'consumed' state}} } void testUnreachableBlock() { ConsumableClass var(42); if (var) { *var; } else { *var; } *var; } void testForLoop1() { ConsumableClass var0, var1(42); for (int i = 0; i < 10; ++i) { // expected-warning {{state of variable 'var1' must match at the entry and exit of loop}} *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; var1.consume(); *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} } void testWhileLoop1() { int i = 10; ConsumableClass var0, var1(42); while (i-- > 0) { // expected-warning {{state of variable 'var1' must match at the entry and exit of loop}} *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} *var1; var1.consume(); *var1; // expected-warning {{invalid invocation of method 'operator*' on object 'var1' while it is in the 'consumed' state}} } *var0; // expected-warning {{invalid invocation of method 'operator*' on object 'var0' while it is in the 'consumed' state}} } typedef const int*& IntegerPointerReference; void testIsRValueRefishAndCanonicalType(IntegerPointerReference a) {} namespace ContinueICETest { bool cond1(); bool cond2(); static void foo1() { while (cond1()) { if (cond2()) continue; } } static void foo2() { while (true) { if (false) continue; } } class runtime_error { public: virtual ~runtime_error(); }; void read(bool sf) { while (sf) { if(sf) throw runtime_error(); } } } // end namespace ContinueICETest namespace InitializerAssertionFailTest { class CONSUMABLE(unconsumed) Status { int code; public: Status() RETURN_TYPESTATE(consumed); Status(int c) RETURN_TYPESTATE(unconsumed); Status(const Status &other); Status(Status &&other); Status& operator=(const Status &other) CALLABLE_WHEN("unknown", "consumed"); Status& operator=(Status &&other) CALLABLE_WHEN("unknown", "consumed"); bool check() const SET_TYPESTATE(consumed); void ignore() const SET_TYPESTATE(consumed); // Status& markAsChecked() { return *this; } void clear() CALLABLE_WHEN("unknown", "consumed") SET_TYPESTATE(consumed); ~Status() CALLABLE_WHEN("unknown", "consumed"); }; bool cond(); Status doSomething(); void handleStatus(const Status& s RETURN_TYPESTATE(consumed)); void handleStatusPtr(const Status* s); void testSimpleTemporaries0() { doSomething(); // expected-warning {{invalid invocation of method '~Status' on a temporary object while it is in the 'unconsumed' state}} } void testSimpleTemporaries1() { doSomething().ignore(); } void testSimpleTemporaries2() { handleStatus(doSomething()); } void testSimpleTemporaries3() { Status s = doSomething(); } // expected-warning {{invalid invocation of method '~Status' on object 's' while it is in the 'unconsumed' state}} void testSimpleTemporaries4() { Status s = doSomething(); s.check(); } void testSimpleTemporaries5() { Status s = doSomething(); s.clear(); // expected-warning {{invalid invocation of method 'clear' on object 's' while it is in the 'unconsumed' state}} } void testSimpleTemporaries6() { Status s = doSomething(); handleStatus(s); } void testSimpleTemporaries7() { Status s; s = doSomething(); } // expected-warning {{invalid invocation of method '~Status' on object 's' while it is in the 'unconsumed' state}} void testTemporariesWithConditionals0() { int a; Status s = doSomething(); if (cond()) a = 0; else a = 1; } // expected-warning {{invalid invocation of method '~Status' on object 's' while it is in the 'unconsumed' state}} void testTemporariesWithConditionals1() { int a; Status s = doSomething(); if (cond()) a = 0; else a = 1; s.ignore(); } void testTemporariesWithConditionals2() { int a; Status s = doSomething(); s.ignore(); if (cond()) a = 0; else a = 1; } void testTemporariesWithConditionals3() { Status s = doSomething(); if (cond()) { s.check(); } } void testTemporariesAndConstructors0() { Status s(doSomething()); s.check(); } void testTemporariesAndConstructors1() { // Test the copy constructor. Status s1 = doSomething(); Status s2(s1); s2.check(); } // expected-warning {{invalid invocation of method '~Status' on object 's1' while it is in the 'unconsumed' state}} void testTemporariesAndConstructors2() { // Test the move constructor. Status s1 = doSomething(); Status s2(static_cast(s1)); s2.check(); } void testTemporariesAndOperators0() { // Test the assignment operator. Status s1 = doSomething(); Status s2; s2 = s1; s2.check(); } // expected-warning {{invalid invocation of method '~Status' on object 's1' while it is in the 'unconsumed' state}} void testTemporariesAndOperators1() { // Test the move assignment operator. Status s1 = doSomething(); Status s2; s2 = static_cast(s1); s2.check(); } void testTemporariesAndOperators2() { Status s1 = doSomething(); Status s2 = doSomething(); s1 = s2; // expected-warning {{invalid invocation of method 'operator=' on object 's1' while it is in the 'unconsumed' state}} s1.check(); s2.check(); } } // end namespace InitializerAssertionFailTest