llvm-svn: 85880

Add CheckCallReturnType and start using it for regular call expressions. This will improve error messages. For 

struct B;

B f();

void g() {
f();
}

We now get

t.cpp:6:3: error: calling 'f' with incomplete return type 'struct B'
  f();
  ^~~
t.cpp:3:3: note: 'f' declared here
B f();
  ^
t.cpp:1:8: note: forward declaration of 'struct B'
struct B;
       ^

llvm-svn: 83692

Don't create a new declaration for friend classes if a declaration already exists.

llvm-svn: 83505

class templates. We now treat friend class templates much more like
normal class templates, except that they still get special name lookup
rules. Fixes PR5057 and eliminates a bunch of spurious diagnostics in
<iostream>.

llvm-svn: 82848

from its location.  Initialize appropriately.

When implicitly creating a declaration of a class template specialization
after encountering the first reference to it, use the pattern class's
location instead of the location of the first reference.

llvm-svn: 81515

specialization types differently.

llvm-svn: 81512

llvm-svn: 81504

llvm-svn: 75324

Implement more of C++0x 'auto'. A variable with an auto type specifier must have an initializer. Also, move some tests around to match the C++0x draft better.

llvm-svn: 75322

llvm-svn: 74339

llvm-svn: 74312

llvm-svn: 74118

llvm-svn: 73287