b23c5e8c3d
template name is not visible to unqualified lookup. In order to support this without a severe degradation in our ability to diagnose typos in template names, this change significantly restructures the way we handle template-id-shaped syntax for which lookup of the template name finds nothing. Instead of eagerly diagnosing an undeclared template name, we now form a placeholder template-name representing a name that is known to not find any templates. When the parser sees such a name, it attempts to disambiguate whether we have a less-than comparison or a template-id. Any diagnostics or typo-correction for the name are delayed until its point of use. The upshot should be a small improvement of our diagostic quality overall: we now take more syntactic context into account when trying to resolve an undeclared identifier on the left hand side of a '<'. In fact, this works well enough that the backwards-compatible portion (for an undeclared identifier rather than a lookup that finds functions but no function templates) is enabled in all language modes. llvm-svn: 360308
82 lines
2.1 KiB
C++
82 lines
2.1 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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class X {};
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void test() {
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X x;
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x.int; // expected-error{{expected unqualified-id}}
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x.~int(); // expected-error{{expected a class name}}
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x.operator; // expected-error{{expected a type}}
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x.operator typedef; // expected-error{{expected a type}} expected-error{{type name does not allow storage class}}
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}
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void test2() {
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X *x;
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x->int; // expected-error{{expected unqualified-id}}
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x->~int(); // expected-error{{expected a class name}}
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x->operator; // expected-error{{expected a type}}
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x->operator typedef; // expected-error{{expected a type}} expected-error{{type name does not allow storage class}}
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}
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// PR6327
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namespace test3 {
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template <class A, class B> struct pair {};
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template <class _E> class initializer_list {};
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template <typename _Tp> pair<_Tp, _Tp> minmax(initializer_list<_Tp> __l) {};
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void test0() {
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pair<int, int> z = minmax({});
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#if __cplusplus <= 199711L // C++03 or earlier modes
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// expected-error@-2 {{expected expression}}
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#else
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// expected-error@-4 {{no matching function for call to 'minmax'}}
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// expected-note@-8 {{candidate template ignored: couldn't infer template argument '_Tp'}}
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#endif
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}
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struct string {
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class iterator {};
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};
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void test1() {
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string s;
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string::iterator i = s.foo(); // expected-error {{no member named 'foo'}}
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}
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}
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// Make sure we don't crash.
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namespace rdar11293995 {
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struct Length {
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// FIXME: We try to annotate the template-id here during tentative parsing,
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// and fail, then try again during the actual parse. This results in the same
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// diagnostic being produced twice. :(
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explicit Length(PassRefPtr<CalculationValue>); // expected-error 2{{undeclared identifier 'CalculationValue'}}
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};
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struct LengthSize {
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Length m_width;
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Length m_height;
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};
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enum EFillSizeType { Contain, Cover, SizeLength, SizeNone };
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struct FillSize {
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EFillSizeType type;
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LengthSize size;
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};
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class FillLayer {
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public:
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void setSize(FillSize f) { m_sizeType = f.type;}
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private:
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unsigned m_sizeType : 2;
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};
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}
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