Properly cast from DeclContext to Decl.

Apparently there's a special procedure for doing this.  Not
following this silently breaks builds.

llvm-svn: 346156

2 files changed, 4 insertions, 5 deletions

diff --git a/lldb/include/lldb/Symbol/ClangASTContext.h b/lldb/include/lldb/Symbol/ClangASTContext.h
index 7c8b3c41f46..633d1d88ebe 100644
--- a/lldb/include/lldb/Symbol/ClangASTContext.h
+++ b/lldb/include/lldb/Symbol/ClangASTContext.h
@@ -194,10 +194,9 @@ public:
 
   uint32_t GetPointerByteSize() override;
 
-  static clang::TranslationUnitDecl *
-  GetTranslationUnitDecl(clang::ASTContext *ast);
+  static clang::DeclContext *GetTranslationUnitDecl(clang::ASTContext *ast);
 
-  clang::TranslationUnitDecl *GetTranslationUnitDecl() {
+  clang::DeclContext *GetTranslationUnitDecl() {
     return GetTranslationUnitDecl(getASTContext());
   }
 
diff --git a/lldb/source/Symbol/ClangASTContext.cpp b/lldb/source/Symbol/ClangASTContext.cpp
index ab378cd8cff..12a83da9cb6 100644
--- a/lldb/source/Symbol/ClangASTContext.cpp
+++ b/lldb/source/Symbol/ClangASTContext.cpp
@@ -1285,7 +1285,7 @@ CompilerType ClangASTContext::GetCStringType(bool is_const) {
   return CompilerType(ast, ast->getPointerType(char_type));
 }
 
-clang::TranslationUnitDecl *
+clang::DeclContext *
 ClangASTContext::GetTranslationUnitDecl(clang::ASTContext *ast) {
   return ast->getTranslationUnitDecl();
 }
@@ -8966,7 +8966,7 @@ ClangASTContext::ConvertStringToFloatValue(lldb::opaque_compiler_type_t type,
 #define DEPTH_INCREMENT 2
 
 void ClangASTContext::Dump(Stream &s) {
-  TranslationUnitDecl *tu = GetTranslationUnitDecl();
+  Decl *tu = Decl::castFromDeclContext(GetTranslationUnitDecl());
   tu->dump(s.AsRawOstream());
 }