151 lines
4.8 KiB
C++
151 lines
4.8 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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char *const_cast_test(const char *var)
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{
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return const_cast<char*>(var);
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}
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struct A {
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virtual ~A() {}
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};
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struct B : public A {
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};
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struct B *dynamic_cast_test(struct A *a)
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{
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return dynamic_cast<struct B*>(a);
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}
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char *reinterpret_cast_test()
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{
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return reinterpret_cast<char*>(0xdeadbeef);
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}
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double static_cast_test(int i)
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{
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return static_cast<double>(i);
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}
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char postfix_expr_test()
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{
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return reinterpret_cast<char*>(0xdeadbeef)[0];
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}
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// This was being incorrectly tentatively parsed.
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namespace test1 {
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template <class T> class A {}; // expected-note 2{{here}}
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void foo() { A<int>(*(A<int>*)0); } // expected-warning {{binding dereferenced null pointer to reference has undefined behavior}}
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}
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typedef char* c;
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typedef A* a;
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void test2(char x, struct B * b) {
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(void)const_cast<::c>(&x);
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a const_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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(void)dynamic_cast<::a>(b);
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a dynamic_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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(void)reinterpret_cast<::c>(x);
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a reinterpret_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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(void)static_cast<::c>(&x);
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a static_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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// Do not do digraph correction.
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(void)static_cast<: :c>(&x); //\
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expected-error {{expected '<' after 'static_cast'}} \
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expected-error {{expected expression}}\
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expected-error {{expected ']'}}\
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expected-note {{to match this '['}}
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(void)static_cast<: // expected-error {{expected '<' after 'static_cast'}} \
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expected-note {{to match this '['}}
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:c>(&x); // expected-error {{expected expression}} \
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expected-error {{expected ']'}}
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#define LC <:
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#define C :
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test1::A LC:B> c; // expected-error {{class template 'test1::A' requires template arguments}} expected-error 2{{}}
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(void)static_cast LC:c>(&x); // expected-error {{expected '<' after 'static_cast'}} expected-error 2{{}} expected-note{{}}
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test1::A<:C B> d; // expected-error {{class template 'test1::A' requires template arguments}} expected-error 2{{}}
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(void)static_cast<:C c>(&x); // expected-error {{expected '<' after 'static_cast'}} expected-error 2{{}} expected-note{{}}
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#define LCC <::
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test1::A LCC B> e;
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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(void)static_cast LCC c>(&x);
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a static_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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}
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// This note comes from "::D[:F> A5;"
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template <class T> class D {}; // expected-note{{template is declared here}}
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template <class T> void E() {};
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class F {};
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void test3() {
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::D<::F> A1;
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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D<::F> A2;
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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::E<::F>();
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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E<::F>();
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#if __cplusplus <= 199711L
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// expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}}
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#endif
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::D< ::F> A3;
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D< ::F> A4;
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::E< ::F>();
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E< ::F>();
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// Make sure that parser doesn't expand '[:' to '< ::'
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::D[:F> A5; // expected-error {{class template '::D' requires template arguments}} \
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// expected-error {{expected expression}} \
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// expected-error {{expected unqualified-id}}
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}
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// Ensure that a C-style cast doesn't turn off colon protection.
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void PR19748() {
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struct A {};
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int A = 0, b;
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int test1 = true ? (int)A : b;
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struct f {};
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extern B f(), (*p)();
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(true ? (B(*)())f : p)();
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}
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void PR19751(int n) {
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struct T { void operator++(int); };
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(T())++; // ok, not an ill-formed cast to function type
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(T())++n; // expected-error {{C-style cast from 'int' to 'T ()' is not allowed}}
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}
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// PR13619. Must be at end of file.
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int n = reinterpret_cast // expected-error {{expected '<'}} expected-error {{expected ';'}}
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