Approved zeph's comments, fixed a few of my screwups.

archivers/grp.c

@@ -130,8 +130,7 @@ static PHYSFS_sint64 GRP_read(FileHandle *handle, void *buffer,
     void *fh = finfo->handle;
     PHYSFS_sint64 curPos = __PHYSFS_platformTell(fh);
     PHYSFS_uint64 bytesLeft = (finfo->startPos + finfo->size) - curPos;
-    /*!!! If objSize is '1' it's quite likely that objsLeft will be greater than 32-bits */
-    PHYSFS_uint32 objsLeft = (PHYSFS_uint32)(bytesLeft / objSize);
+    PHYSFS_uint64 objsLeft = (bytesLeft / objSize);
 
     if (objsLeft < objCount)
         objCount = objsLeft;
@@ -158,8 +157,7 @@ static PHYSFS_sint64 GRP_tell(FileHandle *handle)
 static int GRP_seek(FileHandle *handle, PHYSFS_uint64 offset)
 {
     GRPfileinfo *finfo = (GRPfileinfo *) (handle->opaque);
-    /*!!! Why isn't newPos a 64-bit??? */
-    int newPos = (int)(finfo->startPos + offset);
+    PHYSFS_uint64 newPos = (finfo->startPos + offset);
 
     BAIL_IF_MACRO(offset < 0, ERR_INVALID_ARGUMENT, 0);
     BAIL_IF_MACRO(newPos > finfo->startPos + finfo->size, ERR_PAST_EOF, 0);
@@ -289,7 +287,6 @@ static LinkedStringList *GRP_enumerateFiles(DirHandle *h,
     PHYSFS_uint8 buf[16];
     GRPinfo *g = (GRPinfo *) (h->opaque);
     void *fh = g->handle;
-    /*!!! This should be a uint32 and not an int...look at loops below */
     PHYSFS_uint32 i;
     LinkedStringList *retval = NULL;
     LinkedStringList *l = NULL;
@@ -302,7 +299,6 @@ static LinkedStringList *GRP_enumerateFiles(DirHandle *h,
         /* jump to first file entry... */
     BAIL_IF_MACRO(!__PHYSFS_platformSeek(fh, 16), NULL, NULL);
 
-    /*!!! i needs to be unsigned */
     for (i = 0; i < g->totalEntries; i++)
     {
         BAIL_IF_MACRO(__PHYSFS_platformRead(fh, buf, 16, 1) != 1, NULL, retval);
@@ -341,7 +337,6 @@ static PHYSFS_sint32 getFileEntry(DirHandle *h, const char *name,
     PHYSFS_uint8 buf[16];
     GRPinfo *g = (GRPinfo *) (h->opaque);
     void *fh = g->handle;
-    /*!!! This should be a uint32 and not an int...look at loops below */
     PHYSFS_uint32 i;
     char *ptr;
     int retval = (g->totalEntries + 1) * 16; /* offset of raw file data */

archivers/zip.c

@@ -168,8 +168,6 @@ static int ZIP_seek(FileHandle *handle, PHYSFS_uint64 offset)
 
     while (offset > 0)
     {
-        /* !!! - RYAN, CHECK THIS CAST */
-        /* !!! This should be okay since offset will be <= bufsize */
         PHYSFS_uint32 chunk = (offset > bufsize) ? bufsize : (PHYSFS_uint32)offset;
         PHYSFS_sint32 rc = unzReadCurrentFile(fh, buf, chunk);
         BAIL_IF_MACRO(rc == 0, ERR_IO_ERROR, 0);  /* shouldn't happen. */
@@ -273,9 +271,7 @@ static char *ZIP_realpath(unzFile fh, unz_file_info *info, ZIPentry *entry)
 static int version_does_symlinks(uLong version)
 {
     int retval = 0;
-    /* !!! - RYAN, CHECK THIS CAST */
-    /* !!! - You AND the result with 0xFF, so it can't be larger than 0xFF */
-    unsigned char hosttype = (unsigned char)((version >> 8) & 0xFF);
+    PHYSFS_uint8 hosttype = (PHYSFS_uint8) ((version >> 8) & 0xFF);
 
     /*
      * These are the platforms that can build an archive with symlinks,

physfs.c

@@ -21,7 +21,7 @@
 
 typedef struct __PHYSFS_ERRMSGTYPE__
 {
-    int tid;
+    PHYSFS_uint64 tid;
     int errorAvailable;
     char errorString[80];
     struct __PHYSFS_ERRMSGTYPE__ *next;
@@ -105,13 +105,12 @@ static void *stateLock = NULL;     /* protects other PhysFS static state. */
 static ErrMsg *findErrorForCurrentThread(void)
 {
     ErrMsg *i;
-    int tid;
+    PHYSFS_uint64 tid;
 
     __PHYSFS_platformGrabMutex(errorLock);
     if (errorMessages != NULL)
     {
-        /*!!! I think tid needs to be a 64-bit value??? */
-        tid = (int)__PHYSFS_platformGetThreadID();
+        tid = __PHYSFS_platformGetThreadID();
 
         for (i = errorMessages; i != NULL; i = i->next)
         {
@@ -144,8 +143,7 @@ void __PHYSFS_setError(const char *str)
             return;   /* uhh...? */
 
         memset((void *) err, '\0', sizeof (ErrMsg));
-        /*!!! I think tid needs to be a 64-bit value??? */
-        err->tid = (int)__PHYSFS_platformGetThreadID();
+        err->tid = __PHYSFS_platformGetThreadID();
 
         __PHYSFS_platformGrabMutex(errorLock);
         err->next = errorMessages;