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b8c414ccd1
function-style cast to a non-dependent type which is then used in an invalid way. We'd lose the "type dependent" bit here, and downstream Sema processing would then discard the expression if it was used in a context where its type rendered it invalid. llvm-svn: 274267
123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
// RUN: %clang_cc1 %s -std=c++11 -fcxx-exceptions -fexceptions -fsyntax-only -Wignored-qualifiers -verify
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int test1() {
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throw;
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}
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// PR5071
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template<typename T> T f() { }
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template<typename T>
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void g(T t) {
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return t * 2; // okay
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}
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template<typename T>
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T h() {
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return 17;
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}
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// Don't warn on cv-qualified class return types, only scalar return types.
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namespace ignored_quals {
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struct S {};
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const S class_c();
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const volatile S class_cv();
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const int scalar_c(); // expected-warning{{'const' type qualifier on return type has no effect}}
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int const scalar_c2(); // expected-warning{{'const' type qualifier on return type has no effect}}
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const
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char*
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const // expected-warning{{'const' type qualifier on return type has no effect}}
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f();
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char
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const*
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const // expected-warning{{'const' type qualifier on return type has no effect}}
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g();
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char* const h(); // expected-warning{{'const' type qualifier on return type has no effect}}
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char* volatile i(); // expected-warning{{'volatile' type qualifier on return type has no effect}}
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char*
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volatile // expected-warning{{'const volatile' type qualifiers on return type have no effect}}
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const
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j();
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const volatile int scalar_cv(); // expected-warning{{'const volatile' type qualifiers on return type have no effect}}
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// FIXME: Maintain enough information that we can point the diagnostic at the 'volatile' keyword.
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const
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int S::*
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volatile
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mixed_ret(); // expected-warning {{'volatile' type qualifier on return type has no effect}}
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const int volatile // expected-warning {{'const volatile' type qualifiers on return type have no effect}}
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(((parens())));
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_Atomic(int) atomic();
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_Atomic // expected-warning {{'_Atomic' type qualifier on return type has no effect}}
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int
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atomic();
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auto
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trailing_return_type() -> // expected-warning {{'const' type qualifier on return type has no effect}}
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const int;
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const int ret_array()[4]; // expected-error {{cannot return array}}
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}
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namespace PR9328 {
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typedef char *PCHAR;
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class Test
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{
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const PCHAR GetName() { return 0; } // expected-warning{{'const' type qualifier on return type has no effect}}
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};
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}
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class foo {
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operator const int ();
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operator int * const ();
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};
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namespace PR10057 {
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struct S {
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~S();
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};
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template <class VarType>
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void Test(const VarType& value) {
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return S() = value;
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}
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}
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namespace return_has_expr {
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struct S {
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S() {
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return 42; // expected-error {{constructor 'S' should not return a value}}
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}
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~S() {
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return 42; // expected-error {{destructor '~S' should not return a value}}
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}
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};
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}
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// rdar://15366494
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// pr17759
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namespace ctor_returns_void {
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void f() {}
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struct S {
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S() { return f(); }; // expected-error {{constructor 'S' must not return void expression}}
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~S() { return f(); } // expected-error {{destructor '~S' must not return void expression}}
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};
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}
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void cxx_unresolved_expr() {
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// The use of an undeclared variable tricks clang into building a
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// CXXUnresolvedConstructExpr, and the missing ')' gives it an invalid source
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// location for its rparen. Check that emitting a diag on the range of the
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// expr doesn't assert.
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return int(undeclared, 4; // expected-error {{expected ')'}} expected-note{{to match this '('}} expected-error {{use of undeclared identifier 'undeclared'}}
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}
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