diff --git a/src/BMLArchive.cc b/src/BMLArchive.cc
index 973e3ab6..2233e6d7 100644
--- a/src/BMLArchive.cc
+++ b/src/BMLArchive.cc
@@ -14,7 +14,7 @@ struct BMLHeaderT {
   parray<uint8_t, 0x04> unknown_a1;
   U32T<BE> num_entries;
   parray<uint8_t, 0x38> unknown_a2;
-} __packed__;
+} __attribute__((packed));
 
 using BMLHeader = BMLHeaderT<false>;
 using BMLHeaderBE = BMLHeaderT<true>;
@@ -30,7 +30,7 @@ struct BMLHeaderEntryT {
   U32T<BE> compressed_gvm_size;
   U32T<BE> decompressed_gvm_size;
   parray<uint8_t, 0x0C> unknown_a2;
-} __packed__;
+} __attribute__((packed));
 
 using BMLHeaderEntry = BMLHeaderEntryT<false>;
 using BMLHeaderEntryBE = BMLHeaderEntryT<true>;
diff --git a/src/ChoiceSearch.hh b/src/ChoiceSearch.hh
index 3d1e3666..87476c05 100644
--- a/src/ChoiceSearch.hh
+++ b/src/ChoiceSearch.hh
@@ -40,7 +40,7 @@ struct ChoiceSearchConfigT {
     }
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 
 using ChoiceSearchConfig = ChoiceSearchConfigT<false>;
 using ChoiceSearchConfigBE = ChoiceSearchConfigT<true>;
diff --git a/src/CommandFormats.hh b/src/CommandFormats.hh
index eeda3899..171f6932 100644
--- a/src/CommandFormats.hh
+++ b/src/CommandFormats.hh
@@ -275,7 +275,7 @@ struct S_ReconnectT {
   be_uint32_t address = 0;
   PortT port = 0;
   le_uint16_t unused = 0;
-} __packed__;
+} __attribute__((packed));
 using S_Reconnect_Patch_14 = S_ReconnectT<be_uint16_t>;
 check_struct_size(S_Reconnect_Patch_14, 0x08);
 
@@ -340,7 +340,7 @@ struct S_ServerInitWithAfterMessageT_DC_PC_V3_02_17_91_9B {
   // This field is not part of SEGA's implementation; the client ignores it.
   // newserv sends a message here disavowing the preceding copyright notice.
   pstring<TextEncoding::ASCII, AfterBytes> after_message;
-} __packed__;
+} __attribute__((packed));
 
 // 03 (C->S): Legacy register (non-BB)
 // Internal name: SndRegist
@@ -391,7 +391,7 @@ struct S_ServerInitWithAfterMessageT_BB_03_9B {
   S_ServerInitDefault_BB_03_9B basic_cmd;
   // As in 02, this field is not part of SEGA's implementation.
   pstring<TextEncoding::ASCII, AfterBytes> after_message;
-} __packed__;
+} __attribute__((packed));
 
 // 04 (C->S): Legacy login
 // Internal name: SndLogin2
@@ -566,7 +566,7 @@ struct S_MenuItemT {
   // 80 = Is Episode 2 (V3/BB)
   // C0 = Is Episode 4 (BB)
   uint8_t flags = 0;
-} __packed__;
+} __attribute__((packed));
 using S_MenuItem_PC_BB_08 = S_MenuItemT<TextEncoding::UTF16>;
 using S_MenuItem_DC_V3_08_Ep3_E6 = S_MenuItemT<TextEncoding::MARKED>;
 check_struct_size(S_MenuItem_PC_BB_08, 0x2C);
@@ -628,7 +628,7 @@ struct SC_MeetUserExtensionT {
   /* 40 */ le_uint32_t unknown_a2 = 0;
   /* 44 */ pstring<Encoding, 0x20> player_name;
   /* 64 (or 84 on UTF16 versions) */
-} __packed__;
+} __attribute__((packed));
 using SC_MeetUserExtension_DC_V3 = SC_MeetUserExtensionT<TextEncoding::MARKED>;
 using SC_MeetUserExtension_PC_BB = SC_MeetUserExtensionT<TextEncoding::UTF16>;
 check_struct_size(SC_MeetUserExtension_DC_V3, 0x64);
@@ -683,7 +683,7 @@ template <TextEncoding Encoding>
 struct C_MenuSelectionT_10_Flag01 {
   C_MenuSelection_10_Flag00 basic_cmd;
   pstring<Encoding, 0x10> name;
-} __packed__;
+} __attribute__((packed));
 using C_MenuSelection_DC_V3_10_Flag01 = C_MenuSelectionT_10_Flag01<TextEncoding::MARKED>;
 using C_MenuSelection_PC_BB_10_Flag01 = C_MenuSelectionT_10_Flag01<TextEncoding::UTF16>;
 check_struct_size(C_MenuSelection_DC_V3_10_Flag01, 0x18);
@@ -693,7 +693,7 @@ template <TextEncoding Encoding>
 struct C_MenuSelectionT_10_Flag02 {
   C_MenuSelection_10_Flag00 basic_cmd;
   pstring<Encoding, 0x10> password;
-} __packed__;
+} __attribute__((packed));
 using C_MenuSelection_DC_V3_10_Flag02 = C_MenuSelectionT_10_Flag02<TextEncoding::MARKED>;
 using C_MenuSelection_PC_BB_10_Flag02 = C_MenuSelectionT_10_Flag02<TextEncoding::UTF16>;
 check_struct_size(C_MenuSelection_DC_V3_10_Flag02, 0x18);
@@ -704,7 +704,7 @@ struct C_MenuSelectionT_10_Flag03 {
   C_MenuSelection_10_Flag00 basic_cmd;
   pstring<Encoding, 0x10> name;
   pstring<Encoding, 0x10> password;
-} __packed__;
+} __attribute__((packed));
 using C_MenuSelection_DC_V3_10_Flag03 = C_MenuSelectionT_10_Flag03<TextEncoding::MARKED>;
 using C_MenuSelection_PC_BB_10_Flag03 = C_MenuSelectionT_10_Flag03<TextEncoding::UTF16>;
 check_struct_size(C_MenuSelection_DC_V3_10_Flag03, 0x28);
@@ -978,7 +978,7 @@ struct S_GuildCardSearchResultT {
   // reconnect_command. When processing the 9D/9E, newserv uses only the
   // lobby_id field within, but it fills in all fields when sending a 41.
   SC_MeetUserExtensionT<Encoding> extension;
-} __packed__;
+} __attribute__((packed));
 using S_GuildCardSearchResult_PC_41 = S_GuildCardSearchResultT<PSOCommandHeaderPC, TextEncoding::UTF16>;
 using S_GuildCardSearchResult_DC_V3_41 = S_GuildCardSearchResultT<PSOCommandHeaderDCV3, TextEncoding::MARKED>;
 using S_GuildCardSearchResult_BB_41 = S_GuildCardSearchResultT<PSOCommandHeaderBB, TextEncoding::UTF16>;
@@ -1258,7 +1258,7 @@ struct S_JoinGameT_DC_PC {
   /* 010B */ uint8_t challenge_mode = 0;
   /* 010C */ le_uint32_t random_seed = 0;
   /* 0110 */
-} __packed__;
+} __attribute__((packed));
 
 struct S_JoinGame_DCNTE_64 {
   uint8_t client_id = 0;
@@ -1356,7 +1356,7 @@ struct S_JoinLobbyT {
     LobbyDataT lobby_data;
     PlayerInventory inventory;
     DispDataT disp;
-  } __packed__;
+  } __attribute__((packed));
   // Note: not all of these will be filled in and sent if the lobby isn't full
   // (the command size will be shorter than this struct's size)
   parray<Entry, 12> entries;
@@ -1364,7 +1364,7 @@ struct S_JoinLobbyT {
   static inline size_t size(size_t used_entries) {
     return offsetof(S_JoinLobbyT, entries) + used_entries * sizeof(Entry);
   }
-} __packed__;
+} __attribute__((packed));
 using S_JoinLobby_DCNTE_65_67_68 = S_JoinLobbyT<LobbyFlags_DCNTE, PlayerLobbyDataDCGC, PlayerDispDataDCPCV3>;
 using S_JoinLobby_PC_65_67_68 = S_JoinLobbyT<LobbyFlags, PlayerLobbyDataPC, PlayerDispDataDCPCV3>;
 using S_JoinLobby_DC_GC_65_67_68_Ep3_EB = S_JoinLobbyT<LobbyFlags, PlayerLobbyDataDCGC, PlayerDispDataDCPCV3>;
@@ -2111,7 +2111,7 @@ struct S_QuestMenuEntryT {
   le_uint32_t item_id = 0;
   pstring<Encoding, 0x20> name;
   pstring<Encoding, ShortDescLength> short_description;
-} __packed__;
+} __attribute__((packed));
 using S_QuestMenuEntry_PC_A2_A4 = S_QuestMenuEntryT<TextEncoding::UTF16, 0x70>;
 using S_QuestMenuEntry_DC_GC_A2_A4 = S_QuestMenuEntryT<TextEncoding::MARKED, 0x70>;
 using S_QuestMenuEntry_XB_A2_A4 = S_QuestMenuEntryT<TextEncoding::MARKED, 0x80>;
@@ -2495,7 +2495,7 @@ struct S_ChoiceSearchEntryT {
   le_uint16_t parent_choice_id = 0; // 0 for top-level categories
   le_uint16_t choice_id = 0;
   pstring<Encoding, 0x1C> text;
-} __packed__;
+} __attribute__((packed));
 using S_ChoiceSearchEntry_DC_V3_C0 = S_ChoiceSearchEntryT<TextEncoding::MARKED>;
 using S_ChoiceSearchEntry_PC_BB_C0 = S_ChoiceSearchEntryT<TextEncoding::UTF16>;
 check_struct_size(S_ChoiceSearchEntry_DC_V3_C0, 0x20);
@@ -2525,7 +2525,7 @@ struct C_CreateGameBaseT {
   le_uint32_t item_id = 0;
   pstring<Encoding, 0x10> name;
   pstring<Encoding, 0x10> password;
-} __packed__;
+} __attribute__((packed));
 using C_CreateGame_DCNTE = C_CreateGameBaseT<TextEncoding::SJIS>;
 check_struct_size(C_CreateGame_DCNTE, 0x28);
 
@@ -2540,7 +2540,7 @@ struct C_CreateGameT : C_CreateGameBaseT<Encoding> {
   // different meaning: if set to 0, the game can be joined by v1 and v2
   // players; if set to 1, it's v2-only.
   uint8_t episode = 0; // 1-4 on V3+ (3 on Episode 3); unused on DC/PC
-} __packed__;
+} __attribute__((packed));
 using C_CreateGame_DC_V3_0C_C1_Ep3_EC = C_CreateGameT<TextEncoding::MARKED>;
 using C_CreateGame_PC_C1 = C_CreateGameT<TextEncoding::UTF16>;
 check_struct_size(C_CreateGame_DC_V3_0C_C1_Ep3_EC, 0x2C);
@@ -2580,7 +2580,7 @@ struct S_ChoiceSearchResultEntryT_C4 {
   HeaderT reconnect_command_header; // Ignored by the client
   S_Reconnect_19 reconnect_command;
   SC_MeetUserExtensionT<NameEncoding> meet_user;
-} __packed__;
+} __attribute__((packed));
 using S_ChoiceSearchResultEntry_DC_V3_C4 = S_ChoiceSearchResultEntryT_C4<PSOCommandHeaderDCV3, TextEncoding::ASCII, TextEncoding::MARKED, TextEncoding::ASCII>;
 using S_ChoiceSearchResultEntry_PC_C4 = S_ChoiceSearchResultEntryT_C4<PSOCommandHeaderPC, TextEncoding::UTF16, TextEncoding::UTF16, TextEncoding::UTF16>;
 using S_ChoiceSearchResultEntry_BB_C4 = S_ChoiceSearchResultEntryT_C4<PSOCommandHeaderBB, TextEncoding::UTF16_ALWAYS_MARKED, TextEncoding::UTF16, TextEncoding::UTF16>;
@@ -2602,7 +2602,7 @@ check_struct_size(S_ChoiceSearchResultEntry_BB_C4, 0x158);
 template <size_t Count>
 struct C_SetBlockedSendersT_C6 {
   parray<le_uint32_t, Count> blocked_senders;
-} __packed__;
+} __attribute__((packed));
 using C_SetBlockedSenders_V3_C6 = C_SetBlockedSendersT_C6<30>;
 using C_SetBlockedSenders_BB_C6 = C_SetBlockedSendersT_C6<28>;
 check_struct_size(C_SetBlockedSenders_V3_C6, 0x78);
@@ -2775,7 +2775,7 @@ template <TextEncoding NameEncoding, TextEncoding MessageEncoding>
 struct S_InfoBoardEntryT_D8 {
   pstring<NameEncoding, 0x10> name;
   pstring<MessageEncoding, 0xAC> message;
-} __packed__;
+} __attribute__((packed));
 using S_InfoBoardEntry_V3_D8 = S_InfoBoardEntryT_D8<TextEncoding::ASCII, TextEncoding::MARKED>;
 using S_InfoBoardEntry_BB_D8 = S_InfoBoardEntryT_D8<TextEncoding::UTF16_ALWAYS_MARKED, TextEncoding::UTF16>;
 check_struct_size(S_InfoBoardEntry_V3_D8, 0xBC);
@@ -2976,7 +2976,7 @@ struct S_GameInformationBaseT_Ep3_E1 {
   /* 0100 */ RulesT rules;
   /* 0114 */ parray<PlayerEntry, 8> spectator_entries;
   /* 0294 */
-} __packed__;
+} __attribute__((packed));
 using S_GameInformation_Ep3NTE_E1 = S_GameInformationBaseT_Ep3_E1<Episode3::RulesTrial>;
 using S_GameInformation_Ep3_E1 = S_GameInformationBaseT_Ep3_E1<Episode3::Rules>;
 check_struct_size(S_GameInformation_Ep3NTE_E1, 0x28C);
@@ -3102,7 +3102,7 @@ struct S_TournamentGameDetailsBaseT_Ep3_E3 {
   /* 05BA */ le_uint16_t num_spectators = 0;
   /* 05BC */ parray<PlayerEntry, 8> spectator_entries;
   /* 073C */
-} __packed__;
+} __attribute__((packed));
 using S_TournamentGameDetails_Ep3NTE_E3 = S_TournamentGameDetailsBaseT_Ep3_E3<Episode3::RulesTrial>;
 using S_TournamentGameDetails_Ep3_E3 = S_TournamentGameDetailsBaseT_Ep3_E3<Episode3::Rules>;
 check_struct_size(S_TournamentGameDetails_Ep3NTE_E3, 0x734);
@@ -3890,7 +3890,7 @@ template <typename HeaderT>
 struct G_ExtendedHeaderT {
   HeaderT basic_header;
   le_uint32_t size = 0;
-} __packed__;
+} __attribute__((packed));
 
 // 6x00: Invalid subcommand
 // 6x01: Invalid subcommand
@@ -4018,7 +4018,7 @@ struct G_UpdateEnemyStateT_6x0A {
   le_uint16_t enemy_index = 0; // [0, 0xB50)
   le_uint16_t total_damage = 0;
   typename std::conditional_t<BE, be_uint32_t, le_uint32_t> game_flags = 0;
-} __packed__;
+} __attribute__((packed));
 using G_UpdateEnemyState_GC_6x0A = G_UpdateEnemyStateT_6x0A<true>;
 using G_UpdateEnemyState_DC_PC_XB_BB_6x0A = G_UpdateEnemyStateT_6x0A<false>;
 check_struct_size(G_UpdateEnemyState_GC_6x0A, 0x0C);
@@ -4097,7 +4097,7 @@ struct G_DragonBossActionsT_6x12 {
   le_uint32_t unknown_a4 = 0;
   F32T<BE> x = 0.0f;
   F32T<BE> z = 0.0f;
-} __packed__;
+} __attribute__((packed));
 using G_DragonBossActions_DC_PC_XB_BB_6x12 = G_DragonBossActionsT_6x12<false>;
 using G_DragonBossActions_GC_6x12 = G_DragonBossActionsT_6x12<true>;
 check_struct_size(G_DragonBossActions_DC_PC_XB_BB_6x12, 0x14);
@@ -5116,7 +5116,7 @@ struct G_WordSelectT_6x74 {
   uint8_t size = 0;
   U16T<BE> client_id = 0;
   WordSelectMessage message;
-} __packed__;
+} __attribute__((packed));
 using G_WordSelect_6x74 = G_WordSelectT_6x74<false>;
 using G_WordSelectBE_6x74 = G_WordSelectT_6x74<true>;
 check_struct_size(G_WordSelect_6x74, 0x20);
@@ -5155,7 +5155,7 @@ struct G_SyncQuestRegister_6x77 {
   union {
     le_uint32_t as_int;
     le_float as_float;
-  } __packed__ value;
+  } __attribute__((packed)) value;
 } __packed_ws__(G_SyncQuestRegister_6x77, 0x0C);
 
 // 6x78: Unknown
@@ -5244,7 +5244,7 @@ struct G_BattleScoresT_6x7F {
   } __packed_ws__(Entry, 8);
   G_UnusedHeader header;
   parray<Entry, 4> entries;
-} __packed__;
+} __attribute__((packed));
 using G_BattleScores_6x7F = G_BattleScoresT_6x7F<false>;
 using G_BattleScoresBE_6x7F = G_BattleScoresT_6x7F<true>;
 check_struct_size(G_BattleScores_6x7F, 0x24);
@@ -5616,7 +5616,7 @@ struct G_GolDragonBossActionsT_6xA8 {
   F32T<BE> z = 0.0f;
   uint8_t unknown_a5 = 0;
   parray<uint8_t, 3> unused;
-} __packed__;
+} __attribute__((packed));
 using G_GolDragonBossActions_XB_BB_6xA8 = G_GolDragonBossActionsT_6xA8<false>;
 using G_GolDragonBossActions_GC_6xA8 = G_GolDragonBossActionsT_6xA8<true>;
 check_struct_size(G_GolDragonBossActions_XB_BB_6xA8, 0x18);
@@ -7038,7 +7038,7 @@ struct G_SetTournamentPlayerDecksT_Ep3_6xB4x3D {
   /* 01C2:01CA */ uint8_t unknown_a4 = 0;
   /* 01C3:01CB */ uint8_t unknown_a5 = 0;
   /* 01C4:01CC */
-} __packed__;
+} __attribute__((packed));
 
 using G_SetTournamentPlayerDecks_Ep3NTE_6xB4x3D = G_SetTournamentPlayerDecksT_Ep3_6xB4x3D<Episode3::RulesTrial>;
 check_struct_size(G_SetTournamentPlayerDecks_Ep3NTE_6xB4x3D, 0x1C4);
diff --git a/src/CommonFileFormats.hh b/src/CommonFileFormats.hh
index 8083c741..c2e96d25 100644
--- a/src/CommonFileFormats.hh
+++ b/src/CommonFileFormats.hh
@@ -132,7 +132,7 @@ struct ArrayRefT {
   /* 00 */ U32T<BE> count;
   /* 04 */ U32T<BE> offset;
   /* 08 */
-} __packed__;
+} __attribute__((packed));
 using ArrayRef = ArrayRefT<false>;
 using ArrayRefBE = ArrayRefT<true>;
 check_struct_size(ArrayRef, 8);
diff --git a/src/CommonItemSet.hh b/src/CommonItemSet.hh
index 98fdf525..c6c47ad0 100644
--- a/src/CommonItemSet.hh
+++ b/src/CommonItemSet.hh
@@ -22,7 +22,7 @@ public:
     struct Range {
       IntT min;
       IntT max;
-    } __packed__;
+    } __attribute__((packed));
 
     Episode episode;
     parray<uint8_t, 0x0C> base_weapon_type_prob_table;
@@ -254,7 +254,7 @@ public:
       /* 50 */ U32T<BE> box_item_class_prob_table_offset;
 
       // There are several unused fields here.
-    } __packed__;
+    } __attribute__((packed));
     using Offsets = OffsetsT<false>;
     using OffsetsBE = OffsetsT<true>;
     check_struct_size(Offsets, 0x54);
@@ -337,7 +337,7 @@ public:
   struct WeightTableEntry {
     ValueT value;
     WeightT weight;
-  } __packed__;
+  } __attribute__((packed));
 
   using WeightTableEntry8 = WeightTableEntry<uint8_t>;
   using WeightTableEntry32 = WeightTableEntry<be_uint32_t>;
diff --git a/src/FunctionCompiler.cc b/src/FunctionCompiler.cc
index c8e19f16..d8699e8a 100644
--- a/src/FunctionCompiler.cc
+++ b/src/FunctionCompiler.cc
@@ -466,7 +466,7 @@ uint32_t specific_version_for_gc_header_checksum(uint32_t header_checksum) {
       char developer_code2 = 'P';
       uint8_t disc_number = 0;
       uint8_t version_code;
-    } __packed__ data;
+    } __attribute__((packed)) data;
     for (const char* game_code2 = "OS"; *game_code2; game_code2++) {
       data.game_code2 = *game_code2;
       for (const char* region_code = "JEP"; *region_code; region_code++) {
diff --git a/src/GSLArchive.cc b/src/GSLArchive.cc
index 3863cb81..6394502a 100644
--- a/src/GSLArchive.cc
+++ b/src/GSLArchive.cc
@@ -15,7 +15,7 @@ struct GSLHeaderEntryT {
   U32T<BE> offset; // In pages, so actual offset is this * 0x800
   U32T<BE> size;
   uint64_t unused;
-} __packed__;
+} __attribute__((packed));
 
 using GSLHeaderEntry = GSLHeaderEntryT<false>;
 using GSLHeaderEntryBE = GSLHeaderEntryT<true>;
diff --git a/src/ItemData.hh b/src/ItemData.hh
index b298354a..a4a8840f 100644
--- a/src/ItemData.hh
+++ b/src/ItemData.hh
@@ -127,7 +127,7 @@ struct ItemData {
     parray<be_uint16_t, 6> data1wb;
     parray<le_uint32_t, 3> data1d;
     parray<be_uint32_t, 3> data1db;
-  } __packed__;
+  } __attribute__((packed));
   le_uint32_t id;
   union {
     parray<uint8_t, 4> data2;
@@ -135,7 +135,7 @@ struct ItemData {
     parray<be_uint16_t, 2> data2wb;
     le_uint32_t data2d;
     be_uint32_t data2db;
-  } __packed__;
+  } __attribute__((packed));
 
   ItemData();
   ItemData(const ItemData& other);
diff --git a/src/ItemParameterTable.hh b/src/ItemParameterTable.hh
index b08848f4..0e3325a1 100644
--- a/src/ItemParameterTable.hh
+++ b/src/ItemParameterTable.hh
@@ -28,18 +28,18 @@ public:
     // item's name in the text archive (e.g. TextEnglish) collection 0.
     /* 00 */ U32T<BE> id = 0xFFFFFFFF;
     /* 04 */
-  } __packed__;
+  } __attribute__((packed));
   template <bool BE>
   struct ItemBaseV3T : ItemBaseV2T<BE> {
     /* 04 */ U16T<BE> type = 0; // "Model" in Soly's ItemPMT editor
     /* 06 */ U16T<BE> skin = 0; // "Texture" in Soly's ItemPMT editor
     /* 08 */
-  } __packed__;
+  } __attribute__((packed));
   template <bool BE>
   struct ItemBaseV4T : ItemBaseV3T<BE> {
     /* 08 */ U32T<BE> team_points = 0;
     /* 0C */
-  } __packed__;
+  } __attribute__((packed));
 
   struct WeaponV4;
   struct WeaponDCProtos {
@@ -142,7 +142,7 @@ public:
     /* 28 */
 
     WeaponV4 to_v4() const;
-  } __packed__;
+  } __attribute__((packed));
 
   using WeaponV3 = WeaponV3T<false>;
   using WeaponV3BE = WeaponV3T<true>;
@@ -197,7 +197,7 @@ public:
     /* 12 */ uint8_t dfp_range = 0;
     /* 13 */ uint8_t evp_range = 0;
     /* 14 */
-  } __packed__;
+  } __attribute__((packed));
 
   template <typename BaseT, bool BE>
   struct ArmorOrShieldFinalT : ArmorOrShieldT<BaseT, BE> {
@@ -213,7 +213,7 @@ public:
     /* 16 */ uint8_t flags_type = 0;
     /* 17 */ uint8_t unknown_a4 = 0;
     /* 18 */
-  } __packed__;
+  } __attribute__((packed));
   using ArmorOrShieldV4 = ArmorOrShieldFinalT<ItemBaseV4T<false>, false>;
   check_struct_size(ArmorOrShieldV4, 0x20);
   struct ArmorOrShieldDCProtos : ArmorOrShieldT<ItemBaseV2T<false>, false> {
@@ -226,7 +226,7 @@ public:
   template <bool BE>
   struct ArmorOrShieldV3T : ArmorOrShieldFinalT<ItemBaseV3T<BE>, BE> {
     ArmorOrShieldV4 to_v4() const;
-  } __packed__;
+  } __attribute__((packed));
   using ArmorOrShieldV3 = ArmorOrShieldV3T<false>;
   using ArmorOrShieldV3BE = ArmorOrShieldV3T<true>;
   check_struct_size(ArmorOrShieldV3, 0x1C);
@@ -239,14 +239,14 @@ public:
     /* 04 */ U16T<BE> stat = 0;
     /* 06 */ U16T<BE> stat_amount = 0;
     /* 08 */
-  } __packed__;
+  } __attribute__((packed));
 
   template <typename BaseT, bool BE>
   struct UnitFinalT : UnitT<BaseT, BE> {
     /* 08 */ S16T<BE> modifier_amount = 0;
     /* 0A */ parray<uint8_t, 2> unused;
     /* 0C */
-  } __packed__;
+  } __attribute__((packed));
   using UnitV4 = UnitFinalT<ItemBaseV4T<false>, false>;
   check_struct_size(UnitV4, 0x14);
   struct UnitDCProtos : UnitT<ItemBaseV2T<false>, false> {
@@ -258,7 +258,7 @@ public:
   template <bool BE>
   struct UnitV3T : UnitFinalT<ItemBaseV3T<BE>, BE> {
     UnitV4 to_v4() const;
-  } __packed__;
+  } __attribute__((packed));
   using UnitV3 = UnitV3T<false>;
   using UnitV3BE = UnitV3T<true>;
   check_struct_size(UnitV3, 0x10);
@@ -295,7 +295,7 @@ public:
     /* 0E */ uint8_t on_death_flag = 0;
     /* 0F */ uint8_t on_boss_flag = 0;
     /* 10 */
-  } __packed__;
+  } __attribute__((packed));
 
   struct MagV4 : MagT<ItemBaseV4T<false>, false> {
     le_uint16_t class_flags = 0x00FF;
@@ -318,7 +318,7 @@ public:
     /* 14 */
 
     MagV4 to_v4() const;
-  } __packed__;
+  } __attribute__((packed));
   using MagV3 = MagV3T<false>;
   using MagV3BE = MagV3T<true>;
   check_struct_size(MagV3, 0x18);
@@ -342,7 +342,7 @@ public:
     //   00000080 - is rare (renders as red box; V3+)
     /* 0C */ U32T<BE> item_flags = 0;
     /* 10 */
-  } __packed__;
+  } __attribute__((packed));
 
   using ToolV4 = ToolT<ItemBaseV4T<false>, false>;
   check_struct_size(ToolV4, 0x18);
@@ -352,7 +352,7 @@ public:
   template <bool BE>
   struct ToolV3T : ToolT<ItemBaseV3T<BE>, BE> {
     ToolV4 to_v4() const;
-  } __packed__;
+  } __attribute__((packed));
   using ToolV3 = ToolV3T<false>;
   using ToolV3BE = ToolV3T<true>;
   check_struct_size(ToolV3, 0x14);
@@ -373,7 +373,7 @@ public:
   template <bool BE>
   struct MagFeedResultsListOffsetsT {
     parray<U32T<BE>, 8> offsets; // Offsets of MagFeedResultsList objects
-  } __packed__;
+  } __attribute__((packed));
   using MagFeedResultsListOffsets = MagFeedResultsListOffsetsT<false>;
   using MagFeedResultsListOffsetsBE = MagFeedResultsListOffsetsT<true>;
   check_struct_size(MagFeedResultsListOffsets, 0x20);
@@ -383,7 +383,7 @@ public:
   struct SpecialT {
     U16T<BE> type = 0xFFFF;
     U16T<BE> amount = 0;
-  } __packed__;
+  } __attribute__((packed));
   using Special = SpecialT<false>;
   using SpecialBE = SpecialT<true>;
   check_struct_size(Special, 4);
@@ -395,7 +395,7 @@ public:
     uint8_t stat2 = 0;
     U16T<BE> amount1 = 0;
     U16T<BE> amount2 = 0;
-  } __packed__;
+  } __attribute__((packed));
   using StatBoost = StatBoostT<false>;
   using StatBoostBE = StatBoostT<true>;
   check_struct_size(StatBoost, 6);
@@ -423,7 +423,7 @@ public:
     uint8_t flags = 0;
     parray<uint8_t, 2> unused;
     F32T<BE> amount = 0.0f;
-  } __packed__;
+  } __attribute__((packed));
   using TechniqueBoostEntry = TechniqueBoostEntryT<false>;
   using TechniqueBoostEntryBE = TechniqueBoostEntryT<true>;
   check_struct_size(TechniqueBoostEntry, 0x08);
@@ -445,7 +445,7 @@ public:
     F32T<BE> shield_divisor = 0.0f;
     F32T<BE> unit_divisor = 0.0f;
     F32T<BE> mag_divisor = 0.0f;
-  } __packed__;
+  } __attribute__((packed));
   using NonWeaponSaleDivisors = NonWeaponSaleDivisorsT<false>;
   using NonWeaponSaleDivisorsBE = NonWeaponSaleDivisorsT<true>;
   check_struct_size(NonWeaponSaleDivisors, 0x10);
@@ -599,7 +599,7 @@ protected:
     /* 50 / F5F0 / 15014 */ U32T<BE> unwrap_table; // -> {count, offset -> [{count, offset -> [EventItem]}]}
     /* 54 / F5F8 / 1501C */ U32T<BE> unsealable_table; // -> {count, offset -> [UnsealableItem]}
     /* 58 / F600 / 15024 */ U32T<BE> ranged_special_table; // -> {count, offset -> [4-byte structs]}
-  } __packed__;
+  } __attribute__((packed));
   using TableOffsetsV3V4 = TableOffsetsV3V4T<false>;
   using TableOffsetsV3V4BE = TableOffsetsV3V4T<true>;
   check_struct_size(TableOffsetsV3V4, 0x5C);
diff --git a/src/LevelTable.hh b/src/LevelTable.hh
index 03eb9164..c4b403e7 100644
--- a/src/LevelTable.hh
+++ b/src/LevelTable.hh
@@ -33,7 +33,7 @@ struct CharacterStatsT {
     ret.lck = this->lck.load();
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using CharacterStats = CharacterStatsT<false>;
 using CharacterStatsBE = CharacterStatsT<true>;
 check_struct_size(CharacterStats, 0x0E);
@@ -61,7 +61,7 @@ struct PlayerStatsT {
     ret.meseta = this->meseta.load();
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerStats = PlayerStatsT<false>;
 using PlayerStatsBE = PlayerStatsT<true>;
 check_struct_size(PlayerStats, 0x24);
@@ -89,7 +89,7 @@ struct LevelStatsDeltaT {
     ps.mst += this->mst;
     ps.lck += this->lck;
   }
-} __packed__;
+} __attribute__((packed));
 using LevelStatsDelta = LevelStatsDeltaT<false>;
 using LevelStatsDeltaBE = LevelStatsDeltaT<true>;
 check_struct_size(LevelStatsDelta, 0x0C);
diff --git a/src/PSOEncryption.hh b/src/PSOEncryption.hh
index c45f8185..95f14124 100644
--- a/src/PSOEncryption.hh
+++ b/src/PSOEncryption.hh
@@ -292,7 +292,7 @@ public:
     ret.store_raw(this->value);
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using ChallengeTime = ChallengeTimeT<false>;
 using ChallengeTimeBE = ChallengeTimeT<true>;
 check_struct_size(ChallengeTime, 4);
diff --git a/src/PlayerInventory.hh b/src/PlayerInventory.hh
index f838599f..29ff690e 100644
--- a/src/PlayerInventory.hh
+++ b/src/PlayerInventory.hh
@@ -77,7 +77,7 @@ struct PlayerInventoryItemT {
     ret.data.id.store_raw(phosg::bswap32(ret.data.id.load_raw()));
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerInventoryItem = PlayerInventoryItemT<false>;
 using PlayerInventoryItemBE = PlayerInventoryItemT<true>;
 check_struct_size(PlayerInventoryItem, 0x1C);
@@ -101,7 +101,7 @@ struct PlayerBankItemT {
     ret.present = this->present.load();
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerBankItem = PlayerBankItemT<false>;
 using PlayerBankItemBE = PlayerBankItemT<true>;
 check_struct_size(PlayerBankItem, 0x18);
@@ -292,7 +292,7 @@ struct PlayerInventoryT {
     ret.items = this->items;
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerInventory = PlayerInventoryT<false>;
 using PlayerInventoryBE = PlayerInventoryT<true>;
 check_struct_size(PlayerInventory, 0x34C);
@@ -416,7 +416,7 @@ struct PlayerBankT {
     }
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerBank60 = PlayerBankT<60, false>;
 using PlayerBank200 = PlayerBankT<200, false>;
 using PlayerBank200BE = PlayerBankT<200, true>;
diff --git a/src/PlayerSubordinates.hh b/src/PlayerSubordinates.hh
index 65b44825..892ef694 100644
--- a/src/PlayerSubordinates.hh
+++ b/src/PlayerSubordinates.hh
@@ -230,7 +230,7 @@ struct PlayerVisualConfigT {
     ret.proportion_y = this->proportion_y.load();
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerVisualConfig = PlayerVisualConfigT<false>;
 using PlayerVisualConfigBE = PlayerVisualConfigT<true>;
 check_struct_size(PlayerVisualConfig, 0x50);
@@ -249,7 +249,7 @@ struct PlayerDispDataDCPCV3T {
   }
 
   PlayerDispDataBB to_bb(uint8_t to_language, uint8_t from_language) const;
-} __packed__;
+} __attribute__((packed));
 using PlayerDispDataDCPCV3 = PlayerDispDataDCPCV3T<false>;
 using PlayerDispDataDCPCV3BE = PlayerDispDataDCPCV3T<true>;
 check_struct_size(PlayerDispDataDCPCV3, 0xD0);
@@ -382,7 +382,7 @@ struct GuildCardGCT {
   /* 90:90 */
 
   operator GuildCardBB() const;
-} __packed__;
+} __attribute__((packed));
 using GuildCardGCNTE = GuildCardGCT<false, 0x80>;
 using GuildCardGCNTEBE = GuildCardGCT<true, 0x80>;
 using GuildCardGC = GuildCardGCT<false, 0x6C>;
@@ -530,7 +530,7 @@ struct ChallengeAwardStateT {
     ret.maximum_rank = this->maximum_rank;
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using ChallengeAwardState = ChallengeAwardStateT<false>;
 using ChallengeAwardStateBE = ChallengeAwardStateT<true>;
 check_struct_size(ChallengeAwardState, 8);
@@ -563,7 +563,7 @@ struct PlayerRecordsChallengeDCPCT {
   /* 78:B0 */ parray<ChallengeTimeT<false>, 9> times_ep1_offline; // TODO: This might be online times
   /* 9C:D4 */ parray<uint8_t, 4> unknown_l4;
   /* A0:D8 */
-} __packed__;
+} __attribute__((packed));
 using PlayerRecordsChallengeDC = PlayerRecordsChallengeDCPCT<TextEncoding::ASCII, TextEncoding::CHALLENGE8>;
 using PlayerRecordsChallengePC = PlayerRecordsChallengeDCPCT<TextEncoding::UTF16, TextEncoding::CHALLENGE16>;
 check_struct_size(PlayerRecordsChallengeDC, 0xA0);
@@ -598,7 +598,7 @@ struct PlayerRecordsChallengeV3T {
     /* C8:E4 */ ChallengeAwardStateT<BE> ep2_online_award_state;
     /* D0:EC */ ChallengeAwardStateT<BE> ep1_offline_award_state;
     /* D8:F4 */
-  } __packed__;
+  } __attribute__((packed));
   /* 0000:001C */ Stats stats;
   // On Episode 3, there are special cases that apply to this field - if the
   // text ends with certain strings, the player will have particle effects
@@ -610,7 +610,7 @@ struct PlayerRecordsChallengeV3T {
   /* 00D8:00F4 */ pstring<TextEncoding::CHALLENGE8, 0x0C> rank_title;
   /* 00E4:0100 */ parray<uint8_t, 0x1C> unknown_l7;
   /* 0100:011C */
-} __packed__;
+} __attribute__((packed));
 using PlayerRecordsChallengeV3 = PlayerRecordsChallengeV3T<false>;
 using PlayerRecordsChallengeV3BE = PlayerRecordsChallengeV3T<true>;
 check_struct_size(PlayerRecordsChallengeV3, 0x100);
@@ -742,7 +742,7 @@ struct PlayerRecordsBattleT {
     }
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using PlayerRecordsBattle = PlayerRecordsBattleT<false>;
 using PlayerRecordsBattleBE = PlayerRecordsBattleT<true>;
 check_struct_size(PlayerRecordsBattle, 0x18);
@@ -992,7 +992,7 @@ struct SymbolChatT {
     ret.face_parts = this->face_parts;
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using SymbolChat = SymbolChatT<false>;
 using SymbolChatBE = SymbolChatT<true>;
 check_struct_size(SymbolChat, 0x3C);
diff --git a/src/Quest.cc b/src/Quest.cc
index 34cdfb60..08cc8d38 100644
--- a/src/Quest.cc
+++ b/src/Quest.cc
@@ -52,7 +52,7 @@ struct PSOMemCardDLQFileEncryptedHeaderT {
   le_uint32_t decompressed_size;
   le_uint32_t round3_seed;
   // Data follows here.
-} __packed__;
+} __attribute__((packed));
 using PSOVMSDLQFileEncryptedHeader = PSOMemCardDLQFileEncryptedHeaderT<false>;
 using PSOGCIDLQFileEncryptedHeader = PSOMemCardDLQFileEncryptedHeaderT<true>;
 check_struct_size(PSOVMSDLQFileEncryptedHeader, 0x10);
diff --git a/src/RareItemSet.hh b/src/RareItemSet.hh
index 54904144..719a79f5 100644
--- a/src/RareItemSet.hh
+++ b/src/RareItemSet.hh
@@ -82,7 +82,7 @@ protected:
       /* 08 */ U32T<BE> box_areas_offset; // -> parray<uint8_t, 0x1E>
       /* 0C */ U32T<BE> box_rares_offset; // -> parray<PackedDrop, 0x1E>
       /* 10 */
-    } __packed__;
+    } __attribute__((packed));
     using Offsets = OffsetsT<false>;
     using OffsetsBE = OffsetsT<true>;
     check_struct_size(Offsets, 0x10);
diff --git a/src/SaveFileFormats.hh b/src/SaveFileFormats.hh
index 42ad1465..c3b13ea7 100644
--- a/src/SaveFileFormats.hh
+++ b/src/SaveFileFormats.hh
@@ -112,7 +112,7 @@ struct SaveFileSymbolChatEntryT {
   /* 04:04:04:04:04 */ pstring<Encoding, NameLength> name;
   /* 1C:34:1C:1C:2C */ SymbolChatT<BE> spec;
   /* 58:70:58:58:68 */
-} __packed__;
+} __attribute__((packed));
 using SaveFileSymbolChatEntryPC = SaveFileSymbolChatEntryT<false, TextEncoding::UTF16, 0x18>;
 using SaveFileSymbolChatEntryGC = SaveFileSymbolChatEntryT<true, TextEncoding::MARKED, 0x18>;
 using SaveFileSymbolChatEntryDCXB = SaveFileSymbolChatEntryT<false, TextEncoding::MARKED, 0x18>;
@@ -141,7 +141,7 @@ struct WordSelectMessageT {
     ret.unknown_a4 = this->unknown_a4.load();
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using WordSelectMessage = WordSelectMessageT<false>;
 using WordSelectMessageBE = WordSelectMessageT<true>;
 check_struct_size(WordSelectMessage, 0x1C);
@@ -160,7 +160,7 @@ struct SaveFileChatShortcutEntryT {
       this->text = other.text;
       return *this;
     }
-  } __packed__;
+  } __attribute__((packed));
 
   /* DC:GC:BB */
   /* 00:00:00 */ U32T<BE> type; // 1 = text, 2 = word select, 3 = symbol chat
@@ -186,7 +186,7 @@ struct SaveFileChatShortcutEntryT {
     }
     return ret;
   }
-} __packed__;
+} __attribute__((packed));
 using SaveFileShortcutEntryDC = SaveFileChatShortcutEntryT<false, TextEncoding::MARKED, 0x3C>;
 using SaveFileShortcutEntryPC = SaveFileChatShortcutEntryT<false, TextEncoding::UTF16, 0x3C>;
 using SaveFileShortcutEntryGC = SaveFileChatShortcutEntryT<true, TextEncoding::MARKED, 0x50>;
diff --git a/src/Text.hh b/src/Text.hh
index ca0cb564..486366e7 100644
--- a/src/Text.hh
+++ b/src/Text.hh
@@ -13,13 +13,12 @@
 
 #include "Types.hh"
 
-#define __packed__ __attribute__((packed))
 #define check_struct_size(StructT, Size)                                 \
   static_assert(sizeof(StructT) >= Size, "Structure size is too small"); \
   static_assert(sizeof(StructT) <= Size, "Structure size is too large")
 
 #define __packed_ws__(StructT, Size) \
-  __packed__;                        \
+  __attribute__((packed));           \
   check_struct_size(StructT, Size)
 
 // Conversion functions
@@ -299,7 +298,7 @@ struct parray {
     }
     return true;
   }
-} __packed__;
+} __attribute__((packed));
 
 template <typename ItemT, size_t Count>
 struct bcarray {
@@ -383,6 +382,22 @@ struct bcarray {
   bool operator!=(const bcarray& s) const {
     return !this->operator==(s);
   }
+
+  void clear(ItemT v) {
+    for (size_t x = 0; x < Count; x++) {
+      this->items[x] = v;
+    }
+  }
+  void clear() {
+    for (size_t x = 0; x < Count; x++) {
+      this->items[x] = ItemT();
+    }
+  }
+  void clear_after(size_t position, ItemT v = 0) {
+    for (size_t x = position; x < Count; x++) {
+      this->items[x] = v;
+    }
+  }
 };
 
 // Packed text objects for use in protocol structs
@@ -704,7 +719,7 @@ struct pstring {
 
   // Note: The contents of a pstring do not have to be null-terminated, so there
   // is no .c_str() function.
-} __packed__;
+} __attribute__((packed));
 
 // Helper functions
 
diff --git a/src/WordSelectTable.cc b/src/WordSelectTable.cc
index 385e617d..20971102 100644
--- a/src/WordSelectTable.cc
+++ b/src/WordSelectTable.cc
@@ -40,7 +40,7 @@ struct NonWindowsRootT {
   U32T<BE> table4;
   U32T<BE> article_types_table;
   U32T<BE> table6;
-} __packed__;
+} __attribute__((packed));
 
 using NonWindowsRoot = NonWindowsRootT<false>;
 using NonWindowsRootBE = NonWindowsRootT<true>;