Improve diagnostic to tell you a type is incomplete.
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
diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
index c1a7d47..6b9270a 100644
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -8450,6 +8450,7 @@
case FK_ReferenceInitFailed:
S.Diag(Kind.getLocation(), diag::err_reference_bind_failed)
<< DestType.getNonReferenceType()
+ << DestType.getNonReferenceType()->isIncompleteType()
<< OnlyArg->isLValue()
<< OnlyArg->getType()
<< Args[0]->getSourceRange();