Fix compiler errors with C17

include/rtc.h

@@ -45,15 +45,15 @@ void RtcCalcLocalTimeOffset(s32 days, s32 hours, s32 minutes, s32 seconds);
 void CalcTimeDifference(struct Time *result, struct Time *t1, struct Time *t2);
 u32 RtcGetMinuteCount(void);
 u32 RtcGetLocalDayCount(void);
-/*void RtcAdvanceTime(u32 hours, u32 minutes, u32 seconds);
-void RtcAdvanceTimeTo(u32 hour, u32 minute, u32 second);
+void RtcAdvanceTime(u32 hours, u32 minutes, u32 seconds);
+void RtcGetInfoFake(struct SiiRtcInfo *rtc);
+void RtcCalcTimeDifferenceFake(struct SiiRtcInfo *rtc, struct Time *result, struct Time *t);
+/*void RtcAdvanceTimeTo(u32 hour, u32 minute, u32 second);
 u16 ConvertDateToDayCountFake(u8 year, u8 month, u8 day);
 u16 RtcGetDayCountFake(struct SiiRtcInfo *rtc);
 void RtcInitFake(void);
 u16 RtcGetErrorStatusFake(void);
-void RtcGetInfoFake(struct SiiRtcInfo *rtc);
 u16 RtcCheckInfoFake(struct SiiRtcInfo *rtc);
-void RtcResetFake(void);
-void RtcCalcTimeDifferenceFake(struct SiiRtcInfo *rtc, struct Time *result, struct Time *t);*/
+void RtcResetFake(void);*/
 
 #endif // GUARD_RTC_UTIL_H

src/event_object_movement.c

@@ -2208,7 +2208,7 @@ static bool8 GetFollowerInfo(u16 *species, u8 *form, u8 *shiny)
     if (gSaveBlock2Ptr->optionsfollowerEnable == 0) 
         return GetMonInfo(GetFirstLiveMon(), species, form, shiny);
     else
-        return;
+        return FALSE;
 }
 
 void UpdateFollowingPokemon(void) { // Update following pokemon if any

src/field_specials.c

@@ -4367,16 +4367,17 @@ bool16 TryChangeDeoxysForm(void)
                 break;
             default:
                 gSpecialVar_Result = FALSE;
-                return;
+                return FALSE;
         }
 
         SetMonData(&gPlayerParty[gSpecialVar_0x8004], MON_DATA_SPECIES, &targetSpecies);
         CalculateMonStats(&gPlayerParty[gSpecialVar_0x8004]);
         gSpecialVar_Result = TRUE;
-        return;
+        return TRUE;
     }
 
     gSpecialVar_Result = FALSE;
+    return FALSE;
 }
 
 // Sets the HP EVs of the Pokémon in gSpecialVar_0x8004 according to the current value of var 0x8000 

src/item_use.c

@@ -42,6 +42,7 @@
 #include "constants/item_effects.h"
 #include "constants/items.h"
 #include "constants/songs.h"
+#include "script_pokemon_util.h"
 
 #include "tx_randomizer_and_challenges.h"
 #include "battle_setup.h" //tx_randomizer_and_challenges

src/play_time.c

@@ -1,5 +1,6 @@
 #include "global.h"
 #include "play_time.h"
+#include "rtc.h"
 
 enum
 {

src/pokemon_storage_system.c

@@ -7097,7 +7097,7 @@ static void SetDisplayMonData(void *pokemon, u8 mode)
             sStorage->displayMonPalette = GetMonSpritePalFromSpeciesAndPersonality(sStorage->displayMonSpecies, otId, sStorage->displayMonPersonality);
             gender = GetGenderFromSpeciesAndPersonality(sStorage->displayMonSpecies, sStorage->displayMonPersonality);
             sStorage->displayMonItemId = GetBoxMonData(boxMon, MON_DATA_HELD_ITEM);
-            sStorage->displayMonNuzlockeRibbon = GetMonData(boxMon, MON_DATA_NUZLOCKE_RIBBON);
+            sStorage->displayMonNuzlockeRibbon = GetBoxMonData(boxMon, MON_DATA_NUZLOCKE_RIBBON);
         }
     }
     else

src/rtc.c

@@ -369,7 +369,7 @@ struct Time* GetFakeRtc(void)
 
 u16 ConvertDateToDayCountFake(u8 year, u8 month, u8 day)
 {
-    return &gSaveBlock2Ptr->fakeRTC;
+    return gSaveBlock2Ptr->fakeRTC.days;
 }
 
 u16 RtcGetDayCountFake(struct SiiRtcInfo *rtc)

src/time_events.c

@@ -66,8 +66,8 @@ bool32 IsMirageIslandPresent(void)
             return TRUE;
     } while (++curMon < partyEnd);
 
-    struct BoxPokemon * curBoxMon = &gPokemonStoragePtr->boxes[0];
-    struct BoxPokemon * boxMonEnd = &gPokemonStoragePtr->boxes[TOTAL_BOXES_COUNT * IN_BOX_COUNT];
+    struct BoxPokemon * curBoxMon = &(gPokemonStoragePtr->boxes[0][0]);
+    struct BoxPokemon * boxMonEnd = &(gPokemonStoragePtr->boxes[TOTAL_BOXES_COUNT][IN_BOX_COUNT]);
 
     do {
         species = curBoxMon->hasSpecies;