Improve name lookup for and template instantiation of declaration

references. There are several smallish fixes here:

  - Make sure we look through template parameter scope when
    determining whether we're parsing a nested class (or nested class
    *template*). This makes sure that we delay parsing the bodies of
    inline member functions until after we're out of the outermost
    class (template) scope.
  - Since the bodies of member functions are always parsed
    "out-of-line", even when they were declared in-line, teach
    unqualified name lookup to look into the (semantic) parents.
  - Use the new InstantiateDeclRef to handle the instantiation of a
    reference to a declaration (in DeclRefExpr), which drastically
    simplifies template instantiation for DeclRefExprs.
  - When we're instantiating a ParmVarDecl, it must be in the current
    instantiation scope, so only look there.

Also, remove the #if 0's and FIXME's from the dynarray example, which
now compiles and executes thanks to Anders and Eli.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72481 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 27 insertions, 5 deletions

diff --git a/test/SemaTemplate/example-dynarray.cpp b/test/SemaTemplate/example-dynarray.cpp
index 1fe85d920c..0fcaba3d9b 100644
--- a/test/SemaTemplate/example-dynarray.cpp
+++ b/test/SemaTemplate/example-dynarray.cpp
@@ -120,8 +120,6 @@ int main() {
   assert(di.size() == 4);
   di.push_back(4);
 
-#if 0
-  // FIXME: Copy construction via copy initialization
   dynarray<int> di2 = di;
   assert(di2.size() == 5);
   assert(di.begin() != di2.begin());
@@ -129,7 +127,6 @@ int main() {
        I != IEnd; ++I)
     assert(*I == I - di2.begin());
 
-  // FIXME: Copy construction via direct initialization
   dynarray<int> di3(di);
   assert(di3.size() == 5);
   assert(di.begin() != di3.begin());
@@ -137,7 +134,6 @@ int main() {
        I != IEnd; ++I)
     assert(*I == I - di3.begin());
 
-  // FIXME: assignment operator 
   dynarray<int> di4;
   assert(di4.size() == 0);
   di4 = di;
@@ -146,7 +142,6 @@ int main() {
   for (dynarray<int>::iterator I = di4.begin(), IEnd = di4.end(); 
        I != IEnd; ++I)
     assert(*I == I - di4.begin());
-#endif
 
   return 0;
 }
diff --git a/test/SemaTemplate/instantiate-declref.cpp b/test/SemaTemplate/instantiate-declref.cpp
new file mode 100644
index 0000000000..2512df15b1
--- /dev/null
+++ b/test/SemaTemplate/instantiate-declref.cpp
@@ -0,0 +1,27 @@
+// RUN: clang-cc -fsyntax-only %s
+
+namespace N {
+  struct Outer {
+    struct Inner {
+      template<typename T>
+      struct InnerTemplate {
+        struct VeryInner {
+          typedef T type;
+
+          static enum K1 { K1Val = sizeof(T) } Kind1;
+          // FIXME: Remove the name K2, below
+          static enum K2 { K2Val = sizeof(T)*2 } Kind2;
+
+          void foo() {
+            K1 k1 = K1Val;
+            Kind1 = K1Val;
+            Outer::Inner::InnerTemplate<type>::VeryInner::Kind2 = K2Val;
+          }
+        };
+      };
+    };
+  };
+}
+
+typedef int INT;
+template struct N::Outer::Inner::InnerTemplate<INT>::VeryInner;