105 lines
4.0 KiB
C++
105 lines
4.0 KiB
C++
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// RUN: %clang_cc1 %s -fcxx-exceptions -fdeclspec -fsyntax-only -Wexceptions -verify -std=c++14
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// RUN: %clang_cc1 %s -fcxx-exceptions -fdeclspec -fsyntax-only -Wexceptions -verify -std=c++17 -DCPP17
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__attribute__((nothrow)) void f1();
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static_assert(noexcept(f1()), "");
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void f1() noexcept;
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// expected-error@+2 {{exception specification in declaration does not match previous declaration}}
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// expected-note@-2 {{previous declaration is here}}
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void f1() noexcept(false);
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__attribute__((nothrow)) void f2();
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static_assert(noexcept(f2()), "");
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// expected-error@+2 {{exception specification in declaration does not match previous declaration}}
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// expected-note@-3 {{previous declaration is here}}
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void f2() noexcept(false);
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void f3() __attribute__((nothrow));
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static_assert(noexcept(f3()), "");
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void f3() noexcept;
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// expected-error@+2 {{exception specification in declaration does not match previous declaration}}
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// expected-note@-2 {{previous declaration is here}}
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void f3() noexcept(false);
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// Still noexcept due to throw()
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__attribute__((nothrow)) void f4() throw();
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static_assert(noexcept(f4()), "");
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// Still noexcept due to noexcept
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__attribute__((nothrow)) void f5() noexcept;
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static_assert(noexcept(f5()), "");
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// Still noexcept due to noexcept(true)
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__attribute__((nothrow)) void f6() noexcept(true);
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static_assert(noexcept(f6()), "");
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#ifndef CPP17
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// Doesn't override C++ implementation.
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// expected-warning@+1{{'nothrow' attribute conflicts with exception specification; attribute ignored}}
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__attribute__((nothrow)) void f7() throw(int);
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static_assert(!noexcept(f7()), "");
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#endif
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// Doesn't override C++ implementation.
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// expected-warning@+1{{'nothrow' attribute conflicts with exception specification; attribute ignored}}
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__attribute__((nothrow)) void f8() noexcept(false);
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static_assert(!noexcept(f8()), "");
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__declspec(nothrow) void foo1() noexcept;
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__declspec(nothrow) void foo2() noexcept(true);
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// expected-warning@+1{{'nothrow' attribute conflicts with exception specification; attribute ignored}}
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__declspec(nothrow) void foo3() noexcept(false);
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__declspec(nothrow) void foo4() noexcept(noexcept(foo1()));
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__declspec(nothrow) void foo5() noexcept(noexcept(foo2()));
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// expected-warning@+1{{'nothrow' attribute conflicts with exception specification; attribute ignored}}
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__declspec(nothrow) void foo6() noexcept(noexcept(foo3()));
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template<typename F>
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__declspec(nothrow) void foo7() noexcept(noexcept(F()));
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// FIXME: It would be nice to be able to warn on these, however at the time we
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// evaluate the nothrow, these have yet to be parsed, so the data is not yet
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// there.
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struct S {
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__declspec(nothrow) void f1();
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#ifndef CPP17
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__declspec(nothrow) void f2() throw();
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__declspec(nothrow) void f3() throw(int);
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#endif
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__declspec(nothrow) void f4() noexcept(true);
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__declspec(nothrow) void f5() noexcept(false);
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};
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namespace PR42100 {
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class Base {
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public:
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// expected-note@+1{{overridden virtual function is here}}
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virtual __declspec(nothrow) void foo() = 0;
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// expected-note@+1{{previous declaration is here}}
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__declspec(nothrow) void bar();
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};
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// expected-warning@+1{{'bar' is missing exception specification '__attribute__((nothrow))'}}
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void Base::bar() {}
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class Sub : public Base {
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public:
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// expected-warning@+1{{exception specification of overriding function is more lax than base version}}
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void foo() {}
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};
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}
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namespace FuncPointerReferenceConverts {
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void FuncToBeRefed();
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#ifndef CPP17
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// expected-error@+6{{target exception specification is not superset of source}}
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// expected-error@+6{{target exception specification is not superset of source}}
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#else
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// expected-error@+3{{non-const lvalue reference to type 'void () __attribute__((nothrow))' cannot bind to a value of unrelated type 'void ()'}}
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// expected-error@+3{{cannot initialize a variable of type 'void (*)() __attribute__((nothrow))' with an lvalue of type 'void ()': different exception specifications}}
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#endif
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__declspec(nothrow) void (&FuncRef)() = FuncToBeRefed;
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__declspec(nothrow) void (*FuncPtr)() = FuncToBeRefed;
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}
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