Misc fixes 1 (#1491)

* Some low-hanging UB

* document bug on z_file_nameset_NES.c

* ALIGNED on audio data

* document bug on decode

* document bugs on Message_Decode

* Format

* More ALIGNED

* Put the ALIGNED macro at the right like the other uses in the repo

* review

* fix Message Decode

(cherry picked from commit abfbc7068816756f7ea3fa4a36ee0fe664c54c72)

Co-authored-by: engineer124 <engineer124engineer124@gmail.com>

* remove comments

* Update src/overlays/gamestates/ovl_file_choose/z_file_choose_NES.c

Co-authored-by: engineer124 <47598039+engineer124@users.noreply.github.com>

* format

---------

Co-authored-by: engineer124 <engineer124engineer124@gmail.com>
Co-authored-by: engineer124 <47598039+engineer124@users.noreply.github.com>

src/code/z_common_data.c

@@ -1,6 +1,12 @@
-#include "global.h"
+#include "z64save.h"
 
-SaveContext gSaveContext;
+#include "alignment.h"
+#include "sequence.h"
+#include "libc/stdbool.h"
+#include "z64environment.h"
+#include "z64transition.h"
+
+SaveContext gSaveContext ALIGNED(16);
 
 void SaveContext_Init(void) {
     bzero(&gSaveContext, sizeof(SaveContext));

src/code/z_message.c

@@ -1921,7 +1921,7 @@ void func_8014CCB4(PlayState* play, s16* decodedBufPos, s32* offset, f32* arg3)
  * every digit will be added 0x824F to get an actual S-JIS
  * printable character.
  */
-void Message_GetTimerDigits(OSTime time, s16* digits) {
+void Message_GetTimerDigits(OSTime time, s16 digits[8]) {
     OSTime t = time;
 
     // 6 minutes
@@ -2160,20 +2160,20 @@ void Message_Decode(PlayState* play) {
     u32 timeToMoonCrash;
     s16 var_v0;
     s16 numLines;
-    u8* fontBuf;
-    s16 digits[4];
+    s16 value;
+    s16 digits[5];
     s16 spD2;
     f32 timeInSeconds;
     s32 charTexIndex;
-    f32 var_fs0;
+    u8* fontBuf;
     f32 spC0;
     s16 index;
-    s16 value;
     s16 playerNameLen;
+    s16 spAC[8];
+    f32 var_fs0;
     s16 i;
-    u16 index2 = 0;
-    s16 spAC[4];
     u16 curChar;
+    u8 index2 = 0;
 
     msgCtx->textDelayTimer = 0;
     msgCtx->textDelay = msgCtx->textDelayTimer;
@@ -2212,7 +2212,7 @@ void Message_Decode(PlayState* play) {
                         }
                     }
                 } else {
-                    s32 requiredScopeTemp;
+                    s8 requiredScopeTemp;
 
                     if ((msgCtx->textBoxType != TEXTBOX_TYPE_3) && (msgCtx->textBoxType != TEXTBOX_TYPE_4)) {
                         if (numLines == 0) {
@@ -2289,7 +2289,7 @@ void Message_Decode(PlayState* play) {
                 Message_GetTimerDigits(((void)0, gSaveContext.timerCurTimes[curChar - 0x204]), spAC);
 
                 loadChar = false;
-                for (i = 0; i < 5; i++) {
+                for (i = 0; i < ARRAY_COUNT(spAC) - 3; i++) {
                     if ((i == 1) || (spAC[i + 3] != 0)) {
                         loadChar = true;
                     }
@@ -2304,7 +2304,7 @@ void Message_Decode(PlayState* play) {
                 Message_GetTimerDigits(((void)0, gSaveContext.timerCurTimes[curChar - 0x204]), spAC);
 
                 loadChar = false;
-                for (i = 0; i < 8; i++) {
+                for (i = 0; i < ARRAY_COUNT(spAC); i++) {
                     if ((i == 4) || ((i != 2) && (i != 5) && (spAC[i] != '\0'))) {
                         loadChar = true;
                     }
@@ -2722,7 +2722,7 @@ void Message_Decode(PlayState* play) {
                 }
                 func_8014CCB4(play, &decodedBufPos, &charTexIndex, &spC0);
             } else if (curChar == 0x22F) {
-                for (i = 0; i < 5; i++) {
+                for (i = 0; i < ARRAY_COUNT(gSaveContext.save.saveInfo.bomberCode); i++) {
                     digits[i] = gSaveContext.save.saveInfo.bomberCode[i];
                     Font_LoadChar(play, digits[i] + 0x824F, charTexIndex);
                     charTexIndex += FONT_CHAR_TEX_SIZE;
@@ -2827,7 +2827,7 @@ void Message_Decode(PlayState* play) {
                 }
 
                 loadChar = false;
-                for (i = 0; i < 8; i++) {
+                for (i = 0; i < ARRAY_COUNT(spAC); i++) {
                     if ((i == 4) || ((i != 2) && (i != 5) && (spAC[i] != '\0'))) {
                         loadChar = true;
                     }

src/code/z_parameter.c

@@ -5441,7 +5441,7 @@ void Interface_StartMoonCrash(PlayState* play) {
     play->transitionType = TRANS_TYPE_FADE_WHITE;
 }
 
-void Interface_GetTimerDigits(OSTime time, s16* timerArr) {
+void Interface_GetTimerDigits(OSTime time, s16 timerArr[8]) {
     OSTime t = time;
 
     // 6 minutes

src/code/z_player_lib.c

@@ -2036,7 +2036,7 @@ s32 Player_OverrideLimbDrawGameplayCommon(PlayState* play, s32 limbIndex, Gfx**
         // Note: The increment would not be done for the root limb, even if it had a non-NULL `dList`.
         //       So if the root limb had a non-NULL `dList` (which is not the case in vanilla),
         //       an out-of-bounds write to `bodyPartsPos` would occur.
-        sPlayerCurBodyPartPos = &player->bodyPartsPos[-1];
+        sPlayerCurBodyPartPos = &player->bodyPartsPos[0] - 1;
 
         if (player->transformation != PLAYER_FORM_FIERCE_DEITY) {
             if (!(player->skelAnime.moveFlags & ANIM_FLAG_4) || (player->skelAnime.moveFlags & ANIM_FLAG_1)) {