1147f71fed
I recently ran into this code:
```
\#include <iostream>
void foo(const std::string &s, const std::string& = "");
\#include <string>
void test() { foo(""); }
```
The diagnostic produced said it can't bind char[1] to std::string
const&. It didn't mention std::string is incomplete. The user had to
infer that.
This patch causes the diagnostic to now say "incomplete type".
llvm-svn: 352927
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -Wno-uninitialized
|
|
|
|
struct A {};
|
|
|
|
struct BASE {
|
|
operator A(); // expected-note {{candidate function}}
|
|
};
|
|
|
|
struct BASE1 {
|
|
operator A(); // expected-note {{candidate function}}
|
|
};
|
|
|
|
class B : public BASE , public BASE1
|
|
{
|
|
public:
|
|
B();
|
|
} b;
|
|
|
|
extern B f();
|
|
|
|
const int& ri = (void)0; // expected-error {{reference to type 'const int' could not bind to an rvalue of type 'void'}}
|
|
|
|
int main() {
|
|
const A& rca = f(); // expected-error {{reference initialization of type 'const A &' with initializer of type 'B' is ambiguous}}
|
|
A& ra = f(); // expected-error {{non-const lvalue reference to type 'A' cannot bind to a temporary of type 'B'}}
|
|
}
|
|
|
|
struct PR6139 { A (&x)[1]; };
|
|
PR6139 x = {{A()}}; // expected-error{{non-const lvalue reference to type 'A [1]' cannot bind to an initializer list temporary}}
|
|
|
|
struct PR6139b { A (&x)[1]; };
|
|
PR6139b y = {A()}; // expected-error{{non-const lvalue reference to type 'A [1]' cannot bind to a temporary of type 'A'}}
|
|
|
|
namespace PR16502 {
|
|
struct A { int &&temporary; int x, y; };
|
|
int f();
|
|
const A &c = { 10, ++c.temporary };
|
|
}
|
|
|
|
namespace IncompleteTest {
|
|
struct String;
|
|
// expected-error@+1 {{reference to incomplete type 'const IncompleteTest::String' could not bind to an lvalue of type 'const char [1]'}}
|
|
void takeString(const String& = "") {} // expected-note {{passing argument to parameter here}} expected-note {{candidate function}}
|
|
void test() {
|
|
takeString(); // expected-error {{no matching function for call}}
|
|
}
|
|
}
|