diff --git a/.appveyor.yml b/.appveyor.yml
new file mode 100644
index 00000000..64e7ae64
--- /dev/null
+++ b/.appveyor.yml
@@ -0,0 +1,40 @@
+# Windows Build Configuration for AppVeyor
+# http://www.appveyor.com/docs/appveyor-yml
+
+# build version format
+version: "{build}"
+
+os: Visual Studio 2013
+
+platform:
+  - Any CPU
+
+configuration:
+  - Debug
+  - Release
+
+branches:
+  only:
+    - master
+
+clone_depth: 5
+
+matrix:
+  fast_finish: true # Show final status immediately if a test fails.
+
+# scripts that run after cloning repository
+install:
+  - git clone https://github.com/google/googletest.git External/googletest
+
+build:
+  parallel: true  # enable MSBuild parallel builds
+  verbosity: minimal
+
+build_script:
+  - mkdir build && cd build
+  - cmake .. -DCMAKE_INSTALL_PREFIX=install
+  - cmake --build . --config %CONFIGURATION% --target install
+
+test_script:
+  - ctest -C %CONFIGURATION% --output-on-failure
+  - cd ../Test && bash runtests
diff --git a/SPIRV/Logger.cpp b/SPIRV/Logger.cpp
index 2977ea39..7edf4265 100644
--- a/SPIRV/Logger.cpp
+++ b/SPIRV/Logger.cpp
@@ -40,13 +40,13 @@
 
 namespace spv {
 
-void SpvBuildLogger::tbdFunctionality(const char* f)
+void SpvBuildLogger::tbdFunctionality(const std::string& f)
 {
     if (std::find(std::begin(tbdFeatures), std::end(tbdFeatures), f) == std::end(tbdFeatures))
         tbdFeatures.push_back(f);
 }
 
-void SpvBuildLogger::missingFunctionality(const char* f)
+void SpvBuildLogger::missingFunctionality(const std::string& f)
 {
     if (std::find(std::begin(missingFeatures), std::end(missingFeatures), f) == std::end(missingFeatures))
         missingFeatures.push_back(f);
diff --git a/SPIRV/Logger.h b/SPIRV/Logger.h
index 2b9eb0d5..15b5e354 100644
--- a/SPIRV/Logger.h
+++ b/SPIRV/Logger.h
@@ -48,9 +48,9 @@ public:
     SpvBuildLogger(const SpvBuildLogger&) = delete;
 
     // Registers a TBD functionality.
-    void tbdFunctionality(const char* f);
+    void tbdFunctionality(const std::string& f);
     // Registers a missing functionality.
-    void missingFunctionality(const char* f);
+    void missingFunctionality(const std::string& f);
 
     // Logs a warning.
     void warning(const std::string& w) { warnings.push_back(w); }
@@ -62,8 +62,8 @@ public:
     std::string getAllMessages() const;
 
 private:
-    std::vector<const char*> tbdFeatures;
-    std::vector<const char*> missingFeatures;
+    std::vector<std::string> tbdFeatures;
+    std::vector<std::string> missingFeatures;
     std::vector<std::string> warnings;
     std::vector<std::string> errors;
 };