117 lines
4.3 KiB
C++
117 lines
4.3 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fexceptions -fcxx-exceptions -fsyntax-only -verify %s
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// Exception specification compatibility.
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// We test function pointers, because functions have an extra rule in p4.
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// Same type is compatible
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extern void (*r1)() throw(int);
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extern void (*r1)() throw(int);
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// Typedefs don't matter.
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typedef int INT;
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extern void (*r2)() throw(int);
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extern void (*r2)() throw(INT);
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// Order doesn't matter.
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extern void (*r3)() throw(int, float);
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extern void (*r3)() throw(float, int);
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// MS throw-any spec and no spec at all are compatible
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extern void (*r4)();
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extern void (*r4)() throw(...);
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// throw(X) and no spec are not compatible
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extern void (*r5)() throw(int); // expected-note {{previous declaration}}
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extern void (*r5)(); // expected-error {{exception specification in declaration does not match}}
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// throw(int) and no spec are not compatible
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extern void f5() throw(int); // expected-note {{previous declaration}}
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extern void f5(); // expected-error {{missing exception specification}}
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// Different types are not compatible.
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extern void (*r7)() throw(int); // expected-note {{previous declaration}}
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extern 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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extern void (*r8)() throw(int);
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extern void (*r8)() throw(const int);
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// Multiple appearances don't matter.
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extern void (*r9)() throw(int, int);
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extern void (*r9)() throw(int, int);
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// noexcept is compatible with itself
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extern void (*r10)() noexcept;
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extern void (*r10)() noexcept;
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// noexcept(true) is compatible with noexcept
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extern void (*r11)() noexcept;
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extern void (*r11)() noexcept(true);
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// noexcept(false) isn't
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extern void (*r12)() noexcept; // expected-note {{previous declaration}}
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extern void (*r12)() noexcept(false); // expected-error {{does not match}}
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// The form of the boolean expression doesn't matter.
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extern void (*r13)() noexcept(1 < 2);
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extern void (*r13)() noexcept(2 > 1);
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// noexcept(false) is incompatible with noexcept(true)
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extern void (*r14)() noexcept(true); // expected-note {{previous declaration}}
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extern void (*r14)() noexcept(false); // expected-error {{does not match}}
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// noexcept(false) is compatible with itself
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extern void (*r15)() noexcept(false);
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extern void (*r15)() noexcept(false);
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// noexcept(false) is compatible with MS throw(...)
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extern void (*r16)() noexcept(false);
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extern void (*r16)() throw(...);
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// noexcept(false) is *not* compatible with no spec
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extern void (*r17)(); // expected-note {{previous declaration}}
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extern void (*r17)() noexcept(false); // expected-error {{does not match}}
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// except for functions
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void f17();
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void f17() noexcept(false);
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// noexcept(false) is compatible with dynamic specs that throw unless
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// CWG 1073 resolution is accepted. Clang implements it.
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//extern void (*r18)() throw(int);
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//extern void (*r18)() noexcept(false);
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// noexcept(true) is compatible with dynamic specs that don't throw
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extern void (*r19)() throw();
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extern void (*r19)() noexcept(true);
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// The other way round doesn't work.
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extern void (*r20)() throw(); // expected-note {{previous declaration}}
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extern void (*r20)() noexcept(false); // expected-error {{does not match}}
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extern void (*r21)() throw(int); // expected-note {{previous declaration}}
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extern void (*r21)() noexcept(true); // expected-error {{does not match}}
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// As a very special workaround, we allow operator new to match no spec
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// with a throw(bad_alloc) spec, because C++0x makes an incompatible change
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// here.
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extern "C++" { namespace std { class bad_alloc {}; } }
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typedef decltype(sizeof(int)) mysize_t;
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void* operator new(mysize_t) throw(std::bad_alloc);
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void* operator new(mysize_t);
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void* operator new[](mysize_t);
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void* operator new[](mysize_t) throw(std::bad_alloc);
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template<bool X> void equivalent() noexcept (X);
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template<bool X> void equivalent() noexcept (X);
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template<bool X, bool Y> void not_equivalent() noexcept (X); // expected-note {{previous}}
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template<bool X, bool Y> void not_equivalent() noexcept (Y); // expected-error {{does not match}}
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template<bool X> void missing() noexcept (X); // expected-note {{previous}}
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// FIXME: The missing exception specification that we report here doesn't make
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// sense in the context of this declaration.
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template<bool P> void missing(); // expected-error {{missing exception specification 'noexcept(X)'}}
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