| // RUN: clang-cc -fsyntax-only -verify -fms-extensions %s |
| |
| // Straight from the standard: |
| // Plain function with spec |
| void f() throw(int); |
| // Pointer to function with spec |
| void (*fp)() throw (int); |
| // Function taking reference to function with spec |
| void g(void pfa() throw(int)); |
| // Typedef for pointer to function with spec |
| typedef int (*pf)() throw(int); // expected-error {{specifications are not allowed in typedefs}} |
| |
| // Some more: |
| // Function returning function with spec |
| void (*h())() throw(int); |
| // Ultimate parser thrill: function with spec returning function with spec and |
| // taking pointer to function with spec. |
| // The actual function throws int, the return type double, the argument float. |
| void (*i() throw(int))(void (*)() throw(float)) throw(double); |
| // Pointer to pointer to function taking function with spec |
| void (**k)(void pfa() throw(int)); // no-error |
| // Pointer to pointer to function with spec |
| void (**j)() throw(int); // expected-error {{not allowed beyond a single}} |
| // Pointer to function returning pointer to pointer to function with spec |
| void (**(*h())())() throw(int); // expected-error {{not allowed beyond a single}} |
| |
| struct Incomplete; // expected-note 3 {{forward declaration}} |
| |
| // Exception spec must not have incomplete types, or pointers to them, except |
| // void. |
| void ic1() throw(void); // expected-error {{incomplete type 'void' is not allowed in exception specification}} |
| void ic2() throw(Incomplete); // expected-error {{incomplete type 'struct Incomplete' is not allowed in exception specification}} |
| void ic3() throw(void*); |
| void ic4() throw(Incomplete*); // expected-error {{pointer to incomplete type 'struct Incomplete' is not allowed in exception specification}} |
| void ic5() throw(Incomplete&); // expected-error {{reference to incomplete type 'struct Incomplete' is not allowed in exception specification}} |
| |
| // Redeclarations |
| typedef int INT; |
| void r1() throw(int); |
| void r1() throw(int); |
| |
| void r2() throw(int); |
| void r2() throw(INT); |
| |
| // throw-any spec and no spec at all are semantically equivalent |
| void r3(); |
| void r3() throw(...); |
| |
| void r4() throw(int, float); |
| void r4() throw(float, int); |
| |
| void r5() throw(int); // expected-note {{previous declaration}} |
| void r5(); // expected-error {{exception specification in declaration does not match}} |
| |
| void r6() throw(...); // expected-note {{previous declaration}} |
| void r6() throw(int); // expected-error {{exception specification in declaration does not match}} |
| |
| void r7() throw(int); // expected-note {{previous declaration}} |
| void r7() throw(float); // expected-error {{exception specification in declaration does not match}} |
| |
| // Top-level const doesn't matter. |
| void r8() throw(int); |
| void r8() throw(const int); |
| |
| // Multiple appearances don't matter. |
| void r9() throw(int, int); |
| void r9() throw(int, int); |
| |
| struct A |
| { |
| }; |
| |
| struct B1 : A |
| { |
| }; |
| |
| struct B2 : A |
| { |
| }; |
| |
| struct D : B1, B2 |
| { |
| }; |
| |
| struct P : private A |
| { |
| }; |
| |
| struct Base |
| { |
| virtual void f1() throw(); |
| virtual void f2(); |
| virtual void f3() throw(...); |
| virtual void f4() throw(int, float); |
| |
| virtual void f5() throw(int, float); |
| virtual void f6() throw(A); |
| virtual void f7() throw(A, int, float); |
| virtual void f8(); |
| |
| virtual void g1() throw(); // expected-note {{overridden virtual function is here}} |
| virtual void g2() throw(int); // expected-note {{overridden virtual function is here}} |
| virtual void g3() throw(A); // expected-note {{overridden virtual function is here}} |
| virtual void g4() throw(B1); // expected-note {{overridden virtual function is here}} |
| virtual void g5() throw(A); // expected-note {{overridden virtual function is here}} |
| }; |
| struct Derived : Base |
| { |
| virtual void f1() throw(); |
| virtual void f2() throw(...); |
| virtual void f3(); |
| virtual void f4() throw(float, int); |
| |
| virtual void f5() throw(float); |
| virtual void f6() throw(B1); |
| virtual void f7() throw(B1, B2, int); |
| virtual void f8() throw(B2, B2, int, float, char, double, bool); |
| |
| virtual void g1() throw(int); // expected-error {{exception specification of overriding function is more lax}} |
| virtual void g2(); // expected-error {{exception specification of overriding function is more lax}} |
| virtual void g3() throw(D); // expected-error {{exception specification of overriding function is more lax}} |
| virtual void g4() throw(A); // expected-error {{exception specification of overriding function is more lax}} |
| virtual void g5() throw(P); // expected-error {{exception specification of overriding function is more lax}} |
| }; |
| |
| // Some functions to play with below. |
| void s1() throw(); |
| void s2() throw(int); |
| void s3() throw(A); |
| void s4() throw(B1); |
| void s5() throw(D); |
| void s6(); |
| void s7() throw(int, float); |
| void (*s8())() throw(B1); // s8 returns a pointer to function with spec |
| void s9(void (*)() throw(B1)); // s9 takes pointer to function with spec |
| |
| void fnptrs() |
| { |
| // Assignment and initialization of function pointers. |
| void (*t1)() throw() = &s1; // valid |
| t1 = &s2; // expected-error {{not superset}} expected-error {{incompatible type}} |
| t1 = &s3; // expected-error {{not superset}} expected-error {{incompatible type}} |
| void (&t2)() throw() = s2; // expected-error {{not superset}} |
| void (*t3)() throw(int) = &s2; // valid |
| void (*t4)() throw(A) = &s1; // valid |
| t4 = &s3; // valid |
| t4 = &s4; // valid |
| t4 = &s5; // expected-error {{not superset}} expected-error {{incompatible type}} |
| void (*t5)() = &s1; // valid |
| t5 = &s2; // valid |
| t5 = &s6; // valid |
| t5 = &s7; // valid |
| t1 = t3; // expected-error {{not superset}} expected-error {{incompatible type}} |
| t3 = t1; // valid |
| void (*t6)() throw(B1); |
| t6 = t4; // expected-error {{not superset}} expected-error {{incompatible type}} |
| t4 = t6; // valid |
| t5 = t1; // valid |
| t1 = t5; // expected-error {{not superset}} expected-error {{incompatible type}} |
| |
| // return types and arguments must match exactly, no inheritance allowed |
| void (*(*t7)())() throw(B1) = &s8; // valid |
| void (*(*t8)())() throw(A) = &s8; // expected-error {{return types differ}} expected-error {{incompatible type}} |
| void (*(*t9)())() throw(D) = &s8; // expected-error {{return types differ}} expected-error {{incompatible type}} |
| void (*t10)(void (*)() throw(B1)) = &s9; // valid expected-warning{{disambiguated}} |
| void (*t11)(void (*)() throw(A)) = &s9; // expected-error {{argument types differ}} expected-error {{incompatible type}} expected-warning{{disambiguated}} |
| void (*t12)(void (*)() throw(D)) = &s9; // expected-error {{argument types differ}} expected-error {{incompatible type}} expected-warning{{disambiguated}} |
| } |
| |
| // Member function stuff |
| |
| struct Str1 { void f() throw(int); }; // expected-note {{previous declaration}} |
| void Str1::f() // expected-error {{does not match previous declaration}} |
| { |
| } |
| |
| void mfnptr() |
| { |
| void (Str1::*pfn1)() throw(int) = &Str1::f; // valid |
| void (Str1::*pfn2)() = &Str1::f; // valid |
| void (Str1::*pfn3)() throw() = &Str1::f; // expected-error {{not superset}} expected-error {{incompatible type}} |
| } |
| |
| // Don't suppress errors in template instantiation. |
| template <typename T> struct TEx; // expected-note {{template is declared here}} |
| |
| void tf() throw(TEx<int>); // expected-error {{implicit instantiation of undefined template}} |
| |
| // DR 437, class throws itself. |
| struct DR437 { |
| void f() throw(DR437); |
| void g() throw(DR437*); |
| void h() throw(DR437&); |
| }; |
| |
| // DR 437 within a nested class |
| struct DR437_out { |
| struct DR437_in { |
| void f() throw(DR437_out); |
| void g() throw(DR437_out*); |
| void h() throw(DR437_out&); |
| }; |
| }; |