More GCC compatibility/warning fixes (#3118)

* Wrap >4-char literals in a MULTI_CHAR macro

Modern compilers do not support CW's non-standard behavior with
>4 char literals. We can, however, use a constexpr function to
compute the u64 values directly. This leaves <=4 char literals
unchanged.

* Replace non-pointer usages of NULL with 0

* Define NULL to nullptr on C++11 and above

* Fix more -Wpointer-arith and -Woverflow warnings

* Replace u32/s32 with uintptr_t/intptr_t where appropriate

* JSUOutputStream: Overload all standard int types

3 files changed, 19 insertions, 19 deletions

diff --git a/src/Z2AudioLib/Z2Audience.cpp b/src/Z2AudioLib/Z2Audience.cpp
index 46b7107473..5e8522701b 100644
--- a/src/Z2AudioLib/Z2Audience.cpp
+++ b/src/Z2AudioLib/Z2Audience.cpp
@@ -454,7 +454,7 @@ f32 Z2SpotMic::calcMicVolume(f32 param_0, int camID, f32 param_2) {
     JUT_ASSERT(687, camID >= 0);
     JUT_ASSERT(688, camID < 1);
 
-    if (mMicOn == NULL) {
+    if (mMicOn == false) {
         return param_2;
     }
 
diff --git a/src/Z2AudioLib/Z2Creature.cpp b/src/Z2AudioLib/Z2Creature.cpp
index e02d1abcd5..14b0d31023 100644
--- a/src/Z2AudioLib/Z2Creature.cpp
+++ b/src/Z2AudioLib/Z2Creature.cpp
@@ -718,11 +718,11 @@ void Z2SoundObjBeeGroup::playBeeGroupSound(JAISoundID soundID, u8 param_1) {
     Z2SoundHandlePool* handle1 = startLevelSound((u32)soundID, 0, -1);
     Z2SoundHandlePool* handle2 = startLevelSound(sound_id2, 0, -1);
 
-    if (handle1 != NULL && *handle1 != NULL) {
+    if (handle1 != NULL && *handle1 != false) {
         f32 volume = Z2Calc::linearTransform(param_1, 1.0f, 5.0f, 0.5f, 1.0f, false);
         (*handle1)->getAuxiliary().moveVolume(volume, 0);
     }
-    if (handle2 != NULL && *handle2 != NULL) {
+    if (handle2 != NULL && *handle2 != false) {
         f32 volume = Z2Calc::linearTransform(param_1, 1.0f, 20.0f, 0.1f, 1.0f, false);
         (*handle2)->getAuxiliary().moveVolume(volume, 0);
     }
@@ -924,28 +924,28 @@ Z2SoundHandlePool* Z2CreatureOI::startCreatureSoundLevel(JAISoundID soundID, u32
         f32 pitch = Z2Calc::getParamByExp(mapinfo, 0.0f, 42.0f, 0.4f, 0.9f, 1.1f,
                                           Z2Calc::CURVE_POSITIVE);
         
-        if (handle1 != NULL && *handle1 != NULL) {
+        if (handle1 != NULL && *handle1 != false) {
             (*handle1)->getAuxiliary().moveVolume(volume, 0);
             (*handle1)->getAuxiliary().movePitch(pitch, 0);
         } else {
             return NULL;
         }
 
-        if (handle2 != NULL && *handle2 != NULL) {
+        if (handle2 != NULL && *handle2 != false) {
             (*handle2)->getAuxiliary().moveVolume(volume, 0);
             (*handle2)->getAuxiliary().movePitch(pitch, 0);
         } else {
             return NULL;
         }
 
-        if (handle3 != NULL && *handle3 != NULL) {
+        if (handle3 != NULL && *handle3 != false) {
             (*handle3)->getAuxiliary().moveVolume(volume, 0);
             (*handle3)->getAuxiliary().movePitch(pitch, 0);
         } else {
             return NULL;
         }
 
-        if (handle4 != NULL && *handle4 != NULL) {
+        if (handle4 != NULL && *handle4 != false) {
             (*handle4)->getAuxiliary().moveVolume(volume, 0);
             (*handle4)->getAuxiliary().movePitch(pitch, 0);
             return handle4;
@@ -979,7 +979,7 @@ Z2SoundHandlePool* Z2CreatureOI::startTentacleSoundLevel(JAISoundID soundID, u8
 }
 
 static void Z2_E_sw_modPitch(Z2SoundHandlePool* handle, u32 mapinfo) {
-    if (handle != NULL && *handle != NULL) {
+    if (handle != NULL && *handle != false) {
         f32 pitch = 1.0f;
         switch (mapinfo) {
         case 1:
@@ -994,7 +994,7 @@ static void Z2_E_sw_modPitch(Z2SoundHandlePool* handle, u32 mapinfo) {
 }
 
 static void Z2_E_ms_modVol(Z2SoundHandlePool* handle, u32 mapinfo) {
-    if (handle != NULL && *handle != NULL) {
+    if (handle != NULL && *handle != false) {
         f32 var_f31 = 0.2f;
         if (mapinfo == 1) {
             (*handle)->getAuxiliary().moveVolume(var_f31, 0);
@@ -1003,7 +1003,7 @@ static void Z2_E_ms_modVol(Z2SoundHandlePool* handle, u32 mapinfo) {
 }
 
 static void Z2_E_mm_modPitch(Z2SoundHandlePool* handle, u32 mapinfo) {
-    if (handle != NULL && *handle != NULL) {
+    if (handle != NULL && *handle != false) {
         f32 var_f31 = 0.7f;
         if (mapinfo == 3) {
             (*handle)->getAuxiliary().movePitch(var_f31, 0);
@@ -1012,7 +1012,7 @@ static void Z2_E_mm_modPitch(Z2SoundHandlePool* handle, u32 mapinfo) {
 }
 
 static void Z2_B_zan_modPitch(Z2SoundHandlePool* handle, u32 mapinfo) {
-    if (handle != NULL && *handle != NULL) {
+    if (handle != NULL && *handle != false) {
         f32 pitch = 1.0f;
         f32 volume = 1.0f;
         if (mapinfo > 400) {
diff --git a/src/Z2AudioLib/Z2SoundObject.cpp b/src/Z2AudioLib/Z2SoundObject.cpp
index ec0a70eac4..3904884699 100644
--- a/src/Z2AudioLib/Z2SoundObject.cpp
+++ b/src/Z2AudioLib/Z2SoundObject.cpp
@@ -164,7 +164,7 @@ Z2SoundHandlePool* Z2SoundObjBase::startLevelSound(JAISoundID soundID, u32 mapin
         if (handle != NULL) {
             soundStarter_->startSound(soundID, handle, pos_, mapinfo, fxMix,
                                       1.0f, 1.0f, -1.0f, -1.0f, 0);
-            if (handle != NULL && (*handle) != NULL) {
+            if (handle != NULL && (*handle) != false) {
                 (*handle)->setLifeTime(1, false);
 
                 #if PLATFORM_WII || PLATFORM_SHIELD
@@ -210,7 +210,7 @@ Z2SoundHandlePool* Z2SoundObjBase::startCollisionSE(u32 hitID, u32 mapinfo, Z2So
     }
 
     Z2SoundHandlePool* handle = Z2SoundObjBase::startSound(JAISoundID(hitID), mapinfo, -1);
-    if (handle != NULL && (*handle) != NULL) {
+    if (handle != NULL && (*handle) != false) {
         (*handle)->setUserData(mapinfo);
         if (30 <= mapinfo && mapinfo <= 52) {
             Z2Audible* audible = (Z2Audible*)(*handle)->getAudible();
@@ -251,7 +251,7 @@ Z2SoundHandlePool* Z2DopplerSoundObjBase::startSound(JAISoundID soundID, u32 map
     pos_ = NULL;
 
     Z2SoundHandlePool* handle = Z2SoundObjBase::startSound(soundID, mapinfo, reverb);
-    if (pos != NULL && handle != NULL && (*handle) != NULL) {
+    if (pos != NULL && handle != NULL && (*handle) != false) {
         if ((*handle)->acceptsNewAudible()) {
             (*handle)->newAudible(*pos, &field_0x20, 0, NULL);
         }
@@ -266,7 +266,7 @@ Z2SoundHandlePool* Z2DopplerSoundObjBase::startLevelSound(JAISoundID soundID, u3
     pos_ = NULL;
 
     Z2SoundHandlePool* handle = Z2SoundObjBase::startLevelSound(soundID, mapinfo, reverb);
-    if (pos != NULL && handle != NULL && (*handle) != NULL) {
+    if (pos != NULL && handle != NULL && (*handle) != false) {
         if ((*handle)->acceptsNewAudible()) {
             (*handle)->newAudible(*pos, &field_0x20, 0, NULL);
         }
@@ -285,7 +285,7 @@ void Z2SoundObjSimple::init(Vec* posPtr, u8 handleNum) {
 Z2SoundHandlePool* Z2SoundObjSimple::startSound(JAISoundID soundID, u32 mapinfo, s8 reverb) {
     Z2SoundHandlePool* handle = Z2SoundObjBase::startSound(soundID, mapinfo, reverb);
 
-    if (soundID == Z2SE_AL_UKI_POKOPOKO && handle != NULL && (*handle) != NULL) {
+    if (soundID == Z2SE_AL_UKI_POKOPOKO && handle != NULL && (*handle) != false) {
         f32 volume = Z2Calc::getParamByExp((f32)mapinfo, 0.0f, 127.0f, 0.2f, 0.4f, 1.0f, Z2Calc::CURVE_POSITIVE);
         f32 pitch = Z2Calc::getParamByExp((f32)mapinfo, 0.0f, 127.0f, 0.2f, 0.6f, 1.2f, Z2Calc::CURVE_POSITIVE);
         (*handle)->getAuxiliary().movePitch(pitch, 0);
@@ -298,7 +298,7 @@ Z2SoundHandlePool* Z2SoundObjSimple::startSound(JAISoundID soundID, u32 mapinfo,
 Z2SoundHandlePool* Z2SoundObjSimple::startLevelSound(JAISoundID soundID, u32 mapinfo, s8 reverb) {
     Z2SoundHandlePool* handle = Z2SoundObjBase::startLevelSound(soundID, mapinfo, reverb);
 
-    if (handle != NULL && (*handle) != NULL) {
+    if (handle != NULL && (*handle) != false) {
         f32 pitch = 1.0f;
         f32 volume = 1.0f;
         switch (soundID) {
@@ -502,7 +502,7 @@ void Z2SoundObjAnime::startSoundInner(const JGeometry::TVec3<f32>& pos, f32 para
         u32 id = getSoundID(animationSound, pos, param_1);
         if (!Z2GetSeMgr()->isSoundCulling(id)) {
             JAISoundHandle* handle = getHandleUserData(user_data);
-            if (handle != NULL && (*handle) != NULL && (*handle)->getAnimationState() != 1) {
+            if (handle != NULL && (*handle) != false && (*handle)->getAnimationState() != 1) {
                 handle = NULL;
             }
 
@@ -514,7 +514,7 @@ void Z2SoundObjAnime::startSoundInner(const JGeometry::TVec3<f32>& pos, f32 para
                 bool result = soundStarter->startSound(id, handle, &pos, mapinfo, (f32)reverb / 127.0f,
                                                        animationSound->field_0x0c, (f32)animationSound->field_0x14 / 127.0f,
                                                        -1.0f, -1.0f, 0);
-                if ((*handle) != NULL) {
+                if ((*handle) != false) {
                     (*handle)->setAnimationState(1);
                     (*handle)->setUserData(user_data);
                     if (animationSound->setsLifeTime()) {