Corrected a bug when reloading files, where the string views used for the FilePool hash table where pointing towards freed memory.

sfizz/FilePool.cpp

@@ -120,4 +120,12 @@ void sfz::FilePool::loadingThread() noexcept
         auto fileLoaded = std::make_unique<AudioBuffer<float>>(sndFile.channels(), fileToLoad.numFrames);
         fileToLoad.voice->setFileData(readFromFile<float>(sndFile, fileToLoad.numFrames), fileToLoad.ticket);
     }
+}
+
+void sfz::FilePool::clear()
+{
+    preloadedData.clear();
+    while(loadingQueue.pop()){
+        // Pop the queue
+    }
 }

sfizz/FilePool.h

@@ -59,6 +59,7 @@ public:
     };
     std::optional<FileInformation> getFileInformation(std::string_view filename, uint32_t offset) noexcept;
     void enqueueLoading(Voice* voice, std::string_view sample, int numFrames, unsigned ticket) noexcept;
+    void clear();
 private:
     std::filesystem::path rootDirectory;
     struct FileLoadingInformation {

sfizz/Synth.cpp

@@ -119,6 +119,7 @@ void sfz::Synth::clear()
     masterOpcodes.clear();
     groupOpcodes.clear();
     regions.clear();
+    filePool.clear();
 }
 
 void sfz::Synth::handleGlobalOpcodes(const std::vector<Opcode>& members)