Fixed some compiler warnings with Visual Studio.

src/archiver_iso9660.c

@@ -344,19 +344,19 @@ static int iso_extractfilename(ISO9660Handle *handle,
 static int iso_readimage(ISO9660Handle *handle, PHYSFS_uint64 where,
                          void *buffer, PHYSFS_uint64 len)
 {
-    int rc = -1;
+    PHYSFS_sint64 rc = -1;
     BAIL_IF_ERRPASS(!__PHYSFS_platformGrabMutex(handle->mutex), -1);
-    if (where != handle->currpos)
-        GOTO_IF_ERRPASS(!handle->io->seek(handle->io,where), unlockme);
+    if ((where != handle->currpos) && !handle->io->seek(handle->io,where))
+        BAIL_MUTEX_ERRPASS(handle->mutex, -1);
+
     rc = handle->io->read(handle->io, buffer, len);
     if (rc == -1)
     {
         handle->currpos = (PHYSFS_uint64) -1;
-        goto unlockme;
+        BAIL_MUTEX_ERRPASS(handle->mutex, -1);
     } /* if */
-    handle->currpos += rc;
+    handle->currpos += (PHYSFS_uint64) rc;
 
-    unlockme:
     __PHYSFS_platformReleaseMutex(handle->mutex);
     return rc;
 } /* iso_readimage */
@@ -653,7 +653,7 @@ static PHYSFS_uint32 iso_file_read_mem(ISO9660FileHandle *filehandle,
                                        void *buffer, PHYSFS_uint64 len)
 {
     /* check remaining bytes & max obj which can be fetched */
-    const PHYSFS_sint64 bytesleft = filehandle->filesize - filehandle->currpos;
+    const PHYSFS_uint64 bytesleft = filehandle->filesize - filehandle->currpos;
     if (bytesleft < len)
         len = bytesleft;
 
@@ -691,15 +691,15 @@ static PHYSFS_uint32 iso_file_read_foreign(ISO9660FileHandle *filehandle,
 
     /* check remaining bytes & max obj which can be fetched */
     const PHYSFS_sint64 bytesleft = filehandle->filesize - filehandle->currpos;
-    if (bytesleft < len)
+    if (((PHYSFS_uint64) bytesleft) < len)
         len = bytesleft;
 
     rc = filehandle->io->read(filehandle->io, buffer, len);
     BAIL_IF_ERRPASS(rc == -1, -1);
 
     filehandle->currpos += rc; /* i trust my internal book keeping */
-    BAIL_IF(rc < len, PHYSFS_ERR_CORRUPT, -1);
-    return rc;
+    BAIL_IF(((PHYSFS_uint64) rc) < len, PHYSFS_ERR_CORRUPT, -1);
+    return (PHYSFS_uint32) rc;
 } /* iso_file_read_foreign */
 
 
@@ -709,7 +709,7 @@ static int iso_file_seek_foreign(ISO9660FileHandle *fhandle,
     PHYSFS_sint64 pos;
 
     BAIL_IF(offset < 0, PHYSFS_ERR_INVALID_ARGUMENT, 0);
-    BAIL_IF(offset >= fhandle->filesize, PHYSFS_ERR_PAST_EOF, 0);
+    BAIL_IF(((PHYSFS_uint64) offset) >= fhandle->filesize, PHYSFS_ERR_PAST_EOF, 0);
 
     pos = fhandle->startblock * 2048 + offset;
     BAIL_IF_ERRPASS(!fhandle->io->seek(fhandle->io, pos), -1);

src/archiver_zip.c

@@ -354,7 +354,7 @@ static PHYSFS_sint64 ZIP_read(PHYSFS_Io *_io, void *buf, PHYSFS_uint64 len)
 
                     finfo->compressed_position += (PHYSFS_uint32) br;
                     finfo->stream.next_in = finfo->buffer;
-                    finfo->stream.avail_in = (PHYSFS_uint32) br;
+                    finfo->stream.avail_in = (unsigned int) br;
                 } /* if */
             } /* if */
 
@@ -815,9 +815,9 @@ static int zip_resolve_symlink(PHYSFS_Io *io, ZIPinfo *info, ZIPentry *entry)
             {
                 initializeZStream(&stream);
                 stream.next_in = compressed;
-                stream.avail_in = complen;
+                stream.avail_in = (unsigned int) complen;
                 stream.next_out = (unsigned char *) path;
-                stream.avail_out = size;
+                stream.avail_out = (unsigned int) size;
                 if (zlib_err(inflateInit2(&stream, -MAX_WBITS)) == Z_OK)
                 {
                     rc = zlib_err(inflate(&stream, Z_FINISH));
@@ -1537,7 +1537,7 @@ static int zip_parse_end_of_central_dir(ZIPinfo *info,
     /* offset of central directory */
     BAIL_IF_ERRPASS(!readui32(io, &offset32), 0);
     *dir_ofs = (PHYSFS_uint64) offset32;
-    BAIL_IF(pos < (*dir_ofs + ui32), PHYSFS_ERR_CORRUPT, 0);
+    BAIL_IF(((PHYSFS_uint64) pos) < (*dir_ofs + ui32), PHYSFS_ERR_CORRUPT, 0);
 
     /*
      * For self-extracting archives, etc, there's crapola in the file