forked from OSchip/llvm-project
204 lines
7.5 KiB
C++
204 lines
7.5 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -fexceptions -fms-extensions %s
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// Straight from the standard:
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// Plain function with spec
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void f() throw(int);
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// Pointer to function with spec
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void (*fp)() throw (int);
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// Function taking reference to function with spec
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void g(void pfa() throw(int));
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// Typedef for pointer to function with spec
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typedef int (*pf)() throw(int); // expected-error {{specifications are not allowed in typedefs}}
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// Some more:
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// Function returning function with spec
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void (*h())() throw(int);
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// Ultimate parser thrill: function with spec returning function with spec and
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// taking pointer to function with spec.
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// The actual function throws int, the return type double, the argument float.
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void (*i() throw(int))(void (*)() throw(float)) throw(double);
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// Pointer to pointer to function taking function with spec
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void (**k)(void pfa() throw(int)); // no-error
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// Pointer to pointer to function with spec
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void (**j)() throw(int); // expected-error {{not allowed beyond a single}}
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// Pointer to function returning pointer to pointer to function with spec
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void (**(*h())())() throw(int); // expected-error {{not allowed beyond a single}}
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struct Incomplete; // expected-note 3 {{forward declaration}}
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// Exception spec must not have incomplete types, or pointers to them, except
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// void.
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void ic1() throw(void); // expected-error {{incomplete type 'void' is not allowed in exception specification}}
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void ic2() throw(Incomplete); // expected-error {{incomplete type 'Incomplete' is not allowed in exception specification}}
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void ic3() throw(void*);
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void ic4() throw(Incomplete*); // expected-error {{pointer to incomplete type 'Incomplete' is not allowed in exception specification}}
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void ic5() throw(Incomplete&); // expected-error {{reference to incomplete type 'Incomplete' is not allowed in exception specification}}
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// Redeclarations
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typedef int INT;
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void r1() throw(int);
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void r1() throw(int);
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void r2() throw(int);
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void r2() throw(INT);
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// throw-any spec and no spec at all are semantically equivalent
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void r3();
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void r3() throw(...);
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void r4() throw(int, float);
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void r4() throw(float, int);
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void r5() throw(int); // expected-note {{previous declaration}}
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void r5(); // expected-warning {{missing exception specification}}
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void r6() throw(...); // expected-note {{previous declaration}}
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void r6() throw(int); // expected-error {{exception specification in declaration does not match}}
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void r7() throw(int); // expected-note {{previous declaration}}
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void r7() throw(float); // expected-error {{exception specification in declaration does not match}}
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// Top-level const doesn't matter.
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void r8() throw(int);
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void r8() throw(const int);
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// Multiple appearances don't matter.
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void r9() throw(int, int);
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void r9() throw(int, int);
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struct A
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{
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};
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struct B1 : A
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{
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};
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struct B2 : A
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{
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};
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struct D : B1, B2
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{
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};
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struct P : private A
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{
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};
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struct Base
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{
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virtual void f1() throw();
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virtual void f2();
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virtual void f3() throw(...);
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virtual void f4() throw(int, float);
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virtual void f5() throw(int, float);
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virtual void f6() throw(A);
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virtual void f7() throw(A, int, float);
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virtual void f8();
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virtual void g1() throw(); // expected-note {{overridden virtual function is here}}
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virtual void g2() throw(int); // expected-note {{overridden virtual function is here}}
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virtual void g3() throw(A); // expected-note {{overridden virtual function is here}}
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virtual void g4() throw(B1); // expected-note {{overridden virtual function is here}}
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virtual void g5() throw(A); // expected-note {{overridden virtual function is here}}
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};
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struct Derived : Base
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{
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virtual void f1() throw();
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virtual void f2() throw(...);
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virtual void f3();
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virtual void f4() throw(float, int);
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virtual void f5() throw(float);
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virtual void f6() throw(B1);
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virtual void f7() throw(B1, B2, int);
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virtual void f8() throw(B2, B2, int, float, char, double, bool);
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virtual void g1() throw(int); // expected-error {{exception specification of overriding function is more lax}}
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virtual void g2(); // expected-error {{exception specification of overriding function is more lax}}
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virtual void g3() throw(D); // expected-error {{exception specification of overriding function is more lax}}
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virtual void g4() throw(A); // expected-error {{exception specification of overriding function is more lax}}
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virtual void g5() throw(P); // expected-error {{exception specification of overriding function is more lax}}
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};
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// Some functions to play with below.
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void s1() throw();
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void s2() throw(int);
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void s3() throw(A);
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void s4() throw(B1);
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void s5() throw(D);
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void s6();
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void s7() throw(int, float);
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void (*s8())() throw(B1); // s8 returns a pointer to function with spec
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void s9(void (*)() throw(B1)); // s9 takes pointer to function with spec
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void fnptrs()
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{
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// Assignment and initialization of function pointers.
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void (*t1)() throw() = &s1; // valid
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t1 = &s2; // expected-error {{not superset}} expected-error {{incompatible type}}
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t1 = &s3; // expected-error {{not superset}} expected-error {{incompatible type}}
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void (&t2)() throw() = s2; // expected-error {{not superset}}
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void (*t3)() throw(int) = &s2; // valid
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void (*t4)() throw(A) = &s1; // valid
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t4 = &s3; // valid
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t4 = &s4; // valid
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t4 = &s5; // expected-error {{not superset}} expected-error {{incompatible type}}
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void (*t5)() = &s1; // valid
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t5 = &s2; // valid
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t5 = &s6; // valid
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t5 = &s7; // valid
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t1 = t3; // expected-error {{not superset}} expected-error {{incompatible type}}
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t3 = t1; // valid
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void (*t6)() throw(B1);
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t6 = t4; // expected-error {{not superset}} expected-error {{incompatible type}}
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t4 = t6; // valid
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t5 = t1; // valid
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t1 = t5; // expected-error {{not superset}} expected-error {{incompatible type}}
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// return types and arguments must match exactly, no inheritance allowed
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void (*(*t7)())() throw(B1) = &s8; // valid
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void (*(*t8)())() throw(A) = &s8; // expected-error {{return types differ}}
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void (*(*t9)())() throw(D) = &s8; // expected-error {{return types differ}}
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void (*t10)(void (*)() throw(B1)) = &s9; // valid expected-warning{{disambiguated}}
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void (*t11)(void (*)() throw(A)) = &s9; // expected-error {{argument types differ}} expected-warning{{disambiguated}}
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void (*t12)(void (*)() throw(D)) = &s9; // expected-error {{argument types differ}} expected-warning{{disambiguated}}
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}
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// Member function stuff
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struct Str1 { void f() throw(int); }; // expected-note {{previous declaration}}
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void Str1::f() // expected-warning {{missing exception specification}}
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{
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}
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void mfnptr()
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{
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void (Str1::*pfn1)() throw(int) = &Str1::f; // valid
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void (Str1::*pfn2)() = &Str1::f; // valid
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void (Str1::*pfn3)() throw() = &Str1::f; // expected-error {{not superset}}
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}
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// Don't suppress errors in template instantiation.
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template <typename T> struct TEx; // expected-note {{template is declared here}}
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void tf() throw(TEx<int>); // expected-error {{implicit instantiation of undefined template}}
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// DR 437, class throws itself.
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struct DR437 {
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void f() throw(DR437);
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void g() throw(DR437*);
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void h() throw(DR437&);
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};
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// DR 437 within a nested class
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struct DR437_out {
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struct DR437_in {
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void f() throw(DR437_out);
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void g() throw(DR437_out*);
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void h() throw(DR437_out&);
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};
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};
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