Fix all uninitialized variable warnings (C26495)

Source/Core/DiscIO/CompressedBlob.cpp

@@ -173,17 +173,17 @@ struct CompressThreadState
 
 struct CompressParameters
 {
-  std::vector<u8> data;
-  u32 block_number;
-  u64 inpos;
+  std::vector<u8> data{};
+  u32 block_number = 0;
+  u64 inpos = 0;
 };
 
 struct OutputParameters
 {
-  std::vector<u8> data;
-  u32 block_number;
-  bool compressed;
-  u64 inpos;
+  std::vector<u8> data{};
+  u32 block_number = 0;
+  bool compressed = false;
+  u64 inpos = 0;
 };
 
 static ConversionResultCode SetUpCompressThreadState(CompressThreadState* state)

Source/Core/DiscIO/DirectoryBlob.h

@@ -132,14 +132,14 @@ private:
   std::vector<u8> m_apploader;
   std::vector<u8> m_fst_data;
 
-  std::array<u8, VolumeWii::AES_KEY_SIZE> m_key;
+  std::array<u8, VolumeWii::AES_KEY_SIZE> m_key{};
 
   std::string m_root_directory;
   bool m_is_wii = false;
   // GameCube has no shift, Wii has 2 bit shift
   u32 m_address_shift = 0;
 
-  u64 m_data_size;
+  u64 m_data_size = 0;
 };
 
 class DirectoryBlobReader : public BlobReader

Source/Core/DiscIO/DiscScrubber.h

@@ -46,7 +46,7 @@ private:
   bool ParsePartitionData(const Partition& partition);
   void ParseFileSystemData(u64 partition_data_offset, const FileInfo& directory);
 
-  const Volume* m_disc;
+  const Volume* m_disc = nullptr;
 
   std::vector<u8> m_free_table;
   u64 m_file_size = 0;

Source/Core/DiscIO/LaggedFibonacciGenerator.h

@@ -43,7 +43,7 @@ private:
   static constexpr size_t LFG_K = 521;
   static constexpr size_t LFG_J = 32;
 
-  std::array<u32, LFG_K> m_buffer;
+  std::array<u32, LFG_K> m_buffer{};
 
   size_t m_position_bytes = 0;
 };

Source/Core/DiscIO/VolumeVerifier.h

@@ -78,7 +78,7 @@ private:
 
   struct PotentialMatch
   {
-    u64 size;
+    u64 size = 0;
     Hashes<std::vector<u8>> hashes;
   };
 
@@ -87,9 +87,9 @@ private:
   std::vector<PotentialMatch> ScanDatfile(const std::vector<u8>& data, const std::string& system);
 
   std::string m_game_id;
-  u16 m_revision;
-  u8 m_disc_number;
-  u64 m_size;
+  u16 m_revision = 0;
+  u8 m_disc_number = 0;
+  u64 m_size = 0;
 
   std::future<std::vector<PotentialMatch>> m_future;
   Result m_result;
@@ -173,8 +173,8 @@ private:
   Hashes<bool> m_hashes_to_calculate{};
   bool m_calculating_any_hash = false;
   unsigned long m_crc32_context = 0;
-  mbedtls_md5_context m_md5_context;
-  mbedtls_sha1_context m_sha1_context;
+  mbedtls_md5_context m_md5_context{};
+  mbedtls_sha1_context m_sha1_context{};
 
   u64 m_excess_bytes = 0;
   std::vector<u8> m_data;

Source/Core/DiscIO/VolumeWii.h

@@ -122,7 +122,7 @@ private:
     Common::Lazy<std::vector<u8>> h3_table;
     Common::Lazy<std::unique_ptr<FileSystem>> file_system;
     Common::Lazy<u64> data_offset;
-    u32 type;
+    u32 type = 0;
   };
 
   std::unique_ptr<BlobReader> m_reader;
@@ -131,7 +131,7 @@ private:
   bool m_encrypted;
 
   mutable u64 m_last_decrypted_block;
-  mutable u8 m_last_decrypted_block_data[BLOCK_DATA_SIZE];
+  mutable u8 m_last_decrypted_block_data[BLOCK_DATA_SIZE]{};
 };
 
 }  // namespace DiscIO

Source/Core/DiscIO/WIABlob.h

@@ -168,7 +168,10 @@ private:
     bool is_partition;
     u8 partition_data_index;
 
-    DataEntry(size_t index_) : index(static_cast<u32>(index_)), is_partition(false) {}
+    DataEntry(size_t index_)
+        : index(static_cast<u32>(index_)), is_partition(false), partition_data_index(0)
+    {
+    }
     DataEntry(size_t index_, size_t partition_data_index_)
         : index(static_cast<u32>(index_)), is_partition(true),
           partition_data_index(static_cast<u8>(partition_data_index_))
@@ -281,11 +284,11 @@ private:
 
   struct CompressParameters
   {
-    std::vector<u8> data;
-    const DataEntry* data_entry;
-    u64 data_offset;
-    u64 bytes_read;
-    size_t group_index;
+    std::vector<u8> data{};
+    const DataEntry* data_entry = nullptr;
+    u64 data_offset = 0;
+    u64 bytes_read = 0;
+    size_t group_index = 0;
   };
 
   struct WIAOutputParametersEntry
@@ -312,8 +315,8 @@ private:
   struct OutputParameters
   {
     std::vector<OutputParametersEntry> entries;
-    u64 bytes_read;
-    size_t group_index;
+    u64 bytes_read = 0;
+    size_t group_index = 0;
   };
 
   static bool PadTo4(File::IOFile* file, u64* bytes_written);

Source/Core/DiscIO/WIACompression.h

@@ -141,7 +141,7 @@ private:
   u32 m_rvz_packed_size;
 
   u32 m_size = 0;
-  bool m_junk;
+  bool m_junk = false;
   LaggedFibonacciGenerator m_lfg;
 };
 
@@ -178,7 +178,7 @@ public:
 
 private:
   std::vector<u8> m_buffer;
-  size_t m_bytes_written;
+  size_t m_bytes_written = 0;
   mbedtls_sha1_context m_sha1_context;
 };
 
@@ -244,7 +244,7 @@ private:
   void ExpandBuffer(size_t bytes_to_add);
 
   ZSTD_CStream* m_stream;
-  ZSTD_outBuffer m_out_buffer;
+  ZSTD_outBuffer m_out_buffer{};
   std::vector<u8> m_buffer;
 };
 

Source/Core/DiscIO/WiiEncryptionCache.h

@@ -50,7 +50,7 @@ public:
 private:
   BlobReader* m_blob;
   std::unique_ptr<std::array<u8, VolumeWii::GROUP_TOTAL_SIZE>> m_cache;
-  u64 m_cached_offset;
+  u64 m_cached_offset = 0;
 };
 
 }  // namespace DiscIO