This should fix saves

include/sf64save.h

@@ -63,8 +63,8 @@ typedef struct {
 s32 Save_Write(void);
 s32 Save_Read(void);
 
-void Save_ReadData(void);
-void Save_WriteData(void);
+bool Save_ReadData(void);
+bool Save_WriteData(void);
 
 s32 Save_WriteEeprom(SaveFile*);
 s32 Save_ReadEeprom(SaveFile*);

src/engine/fox_save.c

@@ -44,15 +44,17 @@ s32 Save_Write(void) {
     gSaveFile.save.checksum = Save_Checksum(&gSaveFile.save);
     gSaveFile.backup = gSaveFile.save;
     gSaveIOBuffer = gSaveFile;
-    Save_WriteData();
-    return 0;
+    return Save_WriteData();
 }
 
 s32 Save_Read(void) {
     OSMesg* sp24;
     s32 i;
 
-    Save_ReadData();
+    if(!Save_ReadData()){
+        return 0;
+    }
+
     gSaveFile = gSaveIOBuffer;
 
     if (gSaveFile.save.checksum == Save_Checksum(&gSaveFile.save)) {

src/overlays/ovl_menu/fox_option.c

@@ -1875,8 +1875,12 @@ void Option_Data_Update(void) {
 
                         if (temp_fv0 == 0.0f) {
                             D_menu_801B91CC = 3;
-
+                        #ifdef AVOID_UB
+                            gSaveFile.save = gDefaultSave;
+                            gSaveFile.backup = gDefaultSave;
+                        #else
                             gSaveFile = *(SaveFile*) &gDefaultSave;
+                        #endif
 
                             Save_Write();
 

src/sys/sys_joybus.c

@@ -98,20 +98,12 @@ void Controller_ReadData(void) {
     osSendMesg(&gControllerMesgQueue, OS_MESG_32(SI_CONT_READ_DONE), OS_MESG_PRI_NORMAL);
 }
 
-void Save_ReadData(void) {
-    if ((gStartNMI == 0) && (Save_ReadEeprom(&gSaveIOBuffer) == 0)) {
-        osSendMesg(&gSaveMesgQueue, OS_MESG_32(SI_SAVE_SUCCESS), OS_MESG_PRI_NORMAL);
-        return;
-    }
-    osSendMesg(&gSaveMesgQueue, OS_MESG_32(SI_SAVE_FAILED), OS_MESG_PRI_NORMAL);
+bool Save_ReadData(void) {
+    return Save_ReadEeprom(&gSaveIOBuffer) == 0;
 }
 
-void Save_WriteData(void) {
-    if ((gStartNMI == 0) && (Save_WriteEeprom(&gSaveIOBuffer) == 0)) {
-        osSendMesg(&gSaveMesgQueue, OS_MESG_32(SI_SAVE_SUCCESS), OS_MESG_PRI_NORMAL);
-        return;
-    }
-    osSendMesg(&gSaveMesgQueue, OS_MESG_32(SI_SAVE_FAILED), OS_MESG_PRI_NORMAL);
+bool Save_WriteData(void) {
+    return Save_WriteEeprom(&gSaveIOBuffer) == 0;
 }
 
 void Controller_Rumble(void) {