[PATCH] D20218: [Tooling] Fix broken dependency for shared build

[Etienne Bergeron via cfe-commits]

etienneb created this revision.
etienneb added a reviewer: alexfh.
etienneb added a subscriber: cfe-commits.

There virtual destructor can't be found and cause a compilation error
on a shared build.

To repro: [Release + Shared]
```
-DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON
```

Which produce this error:
```
tools/clang/unittests/Tooling/CMakeFiles/ToolingTests.dir/ToolingTest.cpp.o: In function `clang::tooling::newFrontendActionFactory_CreatesFrontendActionFactoryFromType_Test::TestBody()':
ToolingTest.cpp:(.text._ZN5clang7tooling66newFrontendActionFactory_CreatesFrontendActionFactoryFromType_Test8TestBodyEv+0x49): undefined reference to `clang::SyntaxOnlyAction::~SyntaxOnlyAction()'
```

http://reviews.llvm.org/D20218

Files:
  include/clang/Frontend/FrontendActions.h
  lib/Frontend/FrontendActions.cpp

Index: lib/Frontend/FrontendActions.cpp
===================================================================
--- lib/Frontend/FrontendActions.cpp
+++ lib/Frontend/FrontendActions.cpp
@@ -401,6 +401,9 @@
   return OS;
 }
 
+SyntaxOnlyAction::~SyntaxOnlyAction() {
+}
+
 std::unique_ptr<ASTConsumer>
 SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
   return llvm::make_unique<ASTConsumer>();
Index: include/clang/Frontend/FrontendActions.h
===================================================================
--- include/clang/Frontend/FrontendActions.h
+++ include/clang/Frontend/FrontendActions.h
@@ -129,6 +129,7 @@
                                                  StringRef InFile) override;
 
 public:
+  ~SyntaxOnlyAction() override;
   bool hasCodeCompletionSupport() const override { return true; }
 };
 


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