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-rw-r--r--clang/tools/libclang/CIndexCodeCompletion.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/tools/libclang/CIndexCodeCompletion.cpp b/clang/tools/libclang/CIndexCodeCompletion.cpp
index fa1fd915596..277fadf683b 100644
--- a/clang/tools/libclang/CIndexCodeCompletion.cpp
+++ b/clang/tools/libclang/CIndexCodeCompletion.cpp
@@ -291,6 +291,9 @@ CXCodeCompleteResults *clang_codeComplete(CXIndex CIdx,
llvm::sys::Path ClangPath = CXXIdx->getClangPath();
argv.push_back(ClangPath.c_str());
+ // Always use Clang C++ support.
+ argv.push_back("-ccc-clang-cxx");
+
// Add the '-fsyntax-only' argument so that we only perform a basic
// syntax check of the code.
argv.push_back("-fsyntax-only");
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