4 files changed, 18 insertions, 0 deletions
diff --git a/include/clang-c/Index.h b/include/clang-c/Index.h
index 3c69d0f292..fa35d058e5 100644
--- a/include/clang-c/Index.h
+++ b/include/clang-c/Index.h
@@ -1355,6 +1355,12 @@ CINDEX_LINKAGE unsigned clang_isCursorDefinition(CXCursor);
 CINDEX_LINKAGE unsigned clang_CXXMethod_isStatic(CXCursor C);
 
 /**
+ * \brief Determine if a given struct/class/enum declaration is a definition
+ *   or just a forward declaration.
+ */
+CINDEX_LINKAGE unsigned clang_isTagDeclDefinition(CXCursor C);
+
+/**
  * @}
  */
 
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 6ea1619c3d..85383d0be0 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -2809,6 +2809,15 @@ unsigned clang_CXXMethod_isStatic(CXCursor C) {
   CXXMethodDecl *D = dyn_cast<CXXMethodDecl>(cxcursor::getCursorDecl(C));
   return (D && D->isStatic()) ? 1 : 0;
 }
+
+unsigned clang_isTagDeclDefinition(CXCursor C) {
+  if (!clang_isDeclaration(C.kind))
+    return 0;
+
+  const TagDecl *D = dyn_cast<TagDecl>(cxcursor::getCursorDecl(C));
+  return D && D->isDefinition() ? 1 : 0;
+}
+
 } // end: extern "C"
 
 //===----------------------------------------------------------------------===//
diff --git a/tools/libclang/libclang.darwin.exports b/tools/libclang/libclang.darwin.exports
index 4b61bd34cb..1071a23d03 100644
--- a/tools/libclang/libclang.darwin.exports
+++ b/tools/libclang/libclang.darwin.exports
@@ -81,6 +81,7 @@ _clang_isInvalid
 _clang_isPreprocessing
 _clang_isReference
 _clang_isStatement
+_clang_isTagDeclDefinition
 _clang_isTranslationUnit
 _clang_isUnexposed
 _clang_setUseExternalASTGeneration
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index ad984f0e9d..b986aeb54c 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -81,8 +81,10 @@ clang_isInvalid
 clang_isPreprocessing
 clang_isReference
 clang_isStatement
+clang_isTagDeclDefinition
 clang_isTranslationUnit
 clang_isUnexposed
 clang_setUseExternalASTGeneration
 clang_tokenize
 clang_visitChildren
+