Add support for explicit constructor calls in Microsoft mode.

For example: 

class A{ 
public:
  A& operator=(const A& that) {
      if (this != &that) {
          this->A::~A();
          this->A::A(that);  // <=== explicit constructor call.
      }
      return *this;
  }
};

More work will be needed to support an explicit call to a template constructor.

llvm-svn: 123735

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/test/Parser/MicrosoftExtensions.cpp b/clang/test/Parser/MicrosoftExtensions.cpp
index bc8e88d64bb..1d5811496a7 100644
--- a/clang/test/Parser/MicrosoftExtensions.cpp
+++ b/clang/test/Parser/MicrosoftExtensions.cpp
@@ -85,3 +85,21 @@ void template_uuid()
    __uuidof(T);
    __uuidof(expr);
 }
+
+
+
+class CtorCall { 
+public:
+  CtorCall& operator=(const CtorCall& that);
+
+  int a;
+};
+
+CtorCall& CtorCall::operator=(const CtorCall& that)
+{
+    if (this != &that) {
+        this->CtorCall::~CtorCall();
+        this->CtorCall::CtorCall(that); // expected-warning {{explicit constructor calls are a Microsoft extension}}
+    }
+    return *this;
+}