117 lines · cpp
1// RUN: %clang_cc1 -std=c++11 -fexceptions -fcxx-exceptions -fsyntax-only -verify %s2 3// Exception specification compatibility.4// We test function pointers, because functions have an extra rule in p4.5 6// Same type is compatible7extern void (*r1)() throw(int);8extern void (*r1)() throw(int);9 10// Typedefs don't matter.11typedef int INT;12extern void (*r2)() throw(int);13extern void (*r2)() throw(INT);14 15// Order doesn't matter.16extern void (*r3)() throw(int, float);17extern void (*r3)() throw(float, int);18 19// MS throw-any spec and no spec at all are compatible20extern void (*r4)();21extern void (*r4)() throw(...);22 23// throw(X) and no spec are not compatible24extern void (*r5)() throw(int); // expected-note {{previous declaration}}25extern void (*r5)(); // expected-error {{exception specification in declaration does not match}}26 27// throw(int) and no spec are not compatible28extern void f5() throw(int); // expected-note {{previous declaration}}29extern void f5(); // expected-error {{missing exception specification}}30 31// Different types are not compatible.32extern void (*r7)() throw(int); // expected-note {{previous declaration}}33extern void (*r7)() throw(float); // expected-error {{exception specification in declaration does not match}}34 35// Top-level const doesn't matter.36extern void (*r8)() throw(int);37extern void (*r8)() throw(const int);38 39// Multiple appearances don't matter.40extern void (*r9)() throw(int, int);41extern void (*r9)() throw(int, int);42 43 44// noexcept is compatible with itself45extern void (*r10)() noexcept;46extern void (*r10)() noexcept;47 48// noexcept(true) is compatible with noexcept49extern void (*r11)() noexcept;50extern void (*r11)() noexcept(true);51 52// noexcept(false) isn't53extern void (*r12)() noexcept; // expected-note {{previous declaration}}54extern void (*r12)() noexcept(false); // expected-error {{does not match}}55 56// The form of the boolean expression doesn't matter.57extern void (*r13)() noexcept(1 < 2);58extern void (*r13)() noexcept(2 > 1);59 60// noexcept(false) is incompatible with noexcept(true)61extern void (*r14)() noexcept(true); // expected-note {{previous declaration}}62extern void (*r14)() noexcept(false); // expected-error {{does not match}}63 64// noexcept(false) is compatible with itself65extern void (*r15)() noexcept(false);66extern void (*r15)() noexcept(false);67 68// noexcept(false) is compatible with MS throw(...)69extern void (*r16)() noexcept(false);70extern void (*r16)() throw(...);71 72// noexcept(false) is *not* compatible with no spec73extern void (*r17)(); // expected-note {{previous declaration}}74extern void (*r17)() noexcept(false); // expected-error {{does not match}}75 76// except for functions77void f17();78void f17() noexcept(false);79 80// noexcept(false) is compatible with dynamic specs that throw unless81// CWG 1073 resolution is accepted. Clang implements it.82//extern void (*r18)() throw(int);83//extern void (*r18)() noexcept(false);84 85// noexcept(true) is compatible with dynamic specs that don't throw86extern void (*r19)() throw();87extern void (*r19)() noexcept(true);88 89// The other way round doesn't work.90extern void (*r20)() throw(); // expected-note {{previous declaration}}91extern void (*r20)() noexcept(false); // expected-error {{does not match}}92 93extern void (*r21)() throw(int); // expected-note {{previous declaration}}94extern void (*r21)() noexcept(true); // expected-error {{does not match}}95 96 97// As a very special workaround, we allow operator new to match no spec98// with a throw(bad_alloc) spec, because C++0x makes an incompatible change99// here.100extern "C++" { namespace std { class bad_alloc {}; } }101typedef decltype(sizeof(int)) mysize_t;102void* operator new(mysize_t) throw(std::bad_alloc);103void* operator new(mysize_t);104void* operator new[](mysize_t);105void* operator new[](mysize_t) throw(std::bad_alloc);106 107template<bool X> void equivalent() noexcept (X);108template<bool X> void equivalent() noexcept (X);109 110template<bool X, bool Y> void not_equivalent() noexcept (X); // expected-note {{previous}}111template<bool X, bool Y> void not_equivalent() noexcept (Y); // expected-error {{does not match}}112 113template<bool X> void missing() noexcept (X); // expected-note {{previous}}114// FIXME: The missing exception specification that we report here doesn't make115// sense in the context of this declaration.116template<bool P> void missing(); // expected-error {{missing exception specification 'noexcept(X)'}}117