[libclang] Make sure we don't try to handle a CXCursor_NoDeclFound

passed to clang_findReferencesInFile.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146211 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 9 insertions, 2 deletions

diff --git a/tools/libclang/CIndexHigh.cpp b/tools/libclang/CIndexHigh.cpp
index bbb6d6dcad..4eabefb925 100644
--- a/tools/libclang/CIndexHigh.cpp
+++ b/tools/libclang/CIndexHigh.cpp
@@ -344,6 +344,11 @@ void clang_findReferencesInFile(CXCursor cursor, CXFile file,
       llvm::errs() << "clang_findReferencesInFile: Null cursor\n";
     return;
   }
+  if (cursor.kind == CXCursor_NoDeclFound) {
+    if (Logging)
+      llvm::errs() << "clang_findReferencesInFile: Got CXCursor_NoDeclFound\n";
+    return;
+  }
   if (!file) {
     if (Logging)
       llvm::errs() << "clang_findReferencesInFile: Null file\n";
diff --git a/tools/libclang/CXCursor.cpp b/tools/libclang/CXCursor.cpp
index b4b9ed9d30..5117a4d2b3 100644
--- a/tools/libclang/CXCursor.cpp
+++ b/tools/libclang/CXCursor.cpp
@@ -746,8 +746,10 @@ ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
 }
 
 ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
-  return static_cast<ASTUnit *>(static_cast<CXTranslationUnit>(Cursor.data[2])
-                                  ->TUData);
+  CXTranslationUnit TU = static_cast<CXTranslationUnit>(Cursor.data[2]);
+  if (!TU)
+    return 0;
+  return static_cast<ASTUnit *>(TU->TUData);
 }
 
 CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {