b5f2c4e45b
parameters with default arguments. Directly follow the wording by relaxing the AST invariant that all parameters after one with a default arguemnt also have default arguments, and removing the diagnostic on missing default arguments on a pack-expanded parameter following a parameter with a default argument. Testing also revealed that we need to special-case explicit specializations of templates with a pack following a parameter with a default argument, as such explicit specializations are otherwise impossible to write. The standard wording doesn't address this case; a issue has been filed. This exposed a bug where we would briefly consider a parameter to have no default argument while we parse a delay-parsed default argument for that parameter, which is also fixed. Partially incorporates a patch by Raul Tambre.
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -Wno-uninitialized
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struct A {};
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struct BASE {
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operator A(); // expected-note {{candidate function}}
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};
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struct BASE1 {
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operator A(); // expected-note {{candidate function}}
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};
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class B : public BASE , public BASE1
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{
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public:
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B();
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} b;
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extern B f();
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const int& ri = (void)0; // expected-error {{reference to type 'const int' could not bind to an rvalue of type 'void'}}
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int main() {
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const A& rca = f(); // expected-error {{reference initialization of type 'const A &' with initializer of type 'B' is ambiguous}}
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A& ra = f(); // expected-error {{non-const lvalue reference to type 'A' cannot bind to a temporary of type 'B'}}
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}
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struct PR6139 { A (&x)[1]; };
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PR6139 x = {{A()}}; // expected-error{{non-const lvalue reference to type 'A [1]' cannot bind to an initializer list temporary}}
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struct PR6139b { A (&x)[1]; };
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PR6139b y = {A()}; // expected-error{{non-const lvalue reference to type 'A [1]' cannot bind to a temporary of type 'A'}}
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namespace PR16502 {
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struct A { int &&temporary; int x, y; };
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int f();
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const A &c = { 10, ++c.temporary };
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}
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namespace IncompleteTest {
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struct String;
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// expected-error@+1 {{reference to incomplete type 'const IncompleteTest::String' could not bind to an lvalue of type 'const char [1]'}}
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void takeString(const String& = "") {} // expected-note {{passing argument to parameter here}}
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void test() {
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takeString();
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}
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}
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