[ASTImporter] Implement some expression-related AST node import (part 2)

* Some code cleanup
* Add tests not present in http://reviews.llvm.org/D14286
* Integrate a test suite from Serge Pavlov (http://reviews.llvm.org/D14224)
* ArrayTypeTraitExpr: serialize sub-expression to avoid keeping it undefined
* Implement import of some nodes:
  - ArrayTypeTraitExpr
  - ExpressionTraitExpr
  - OpaqueValueExpr
  - ArraySubscriptExpr
  - ExplicitCastExpr
  - ImplicitValueInitExpr
  - OffsetOfExpr
  - CXXThisExpr
  - CXXThrowExpr
  - CXXNoexceptExpr
  - CXXDefaultArgExpr
  - CXXScalarValueInitExpr
  - CXXBindTemporaryExpr
  - CXXTemporaryObjectExpr
  - MaterializeTemporaryExpr
  - ExprWithCleanups

  - StaticAssertDecl
  - FriendDecl

  - DecayedType

Differential Revision: https://reviews.llvm.org/D14326

llvm-svn: 282572

1 files changed, 26 insertions, 0 deletions

diff --git a/clang/test/ASTMerge/Inputs/class3.cpp b/clang/test/ASTMerge/Inputs/class3.cpp
new file mode 100644
index 00000000000..428acc3f031
--- /dev/null
+++ b/clang/test/ASTMerge/Inputs/class3.cpp
@@ -0,0 +1,26 @@
+class C1 {
+public:
+  C1();
+  ~C1();
+  C1 *method_1() {
+    return this;
+  }
+  C1 method_2() {
+    return C1();
+  }
+  void method_3() {
+    const C1 &ref = C1();
+  }
+};
+
+class C11 : public C1 {
+};
+
+class C2 {
+private:
+  int x;
+  friend class C3;
+public:
+  static_assert(sizeof(x) == sizeof(int), "Error");
+  typedef class C2::C2 InjType;
+};