***************
*** 837,843 ****
      HPDF_PTRACE((" HPDF_FileReader_ReadFunc\n"));
  
      HPDF_MemSet(ptr, 0, *siz);
-     rsiz = HPDF_FREAD(ptr, 1, *siz, fp);
  
      if (rsiz != *siz) {
          if (HPDF_FEOF(fp)) {
--- 871,877 ----
      HPDF_PTRACE((" HPDF_FileReader_ReadFunc\n"));
  
      HPDF_MemSet(ptr, 0, *siz);
+     rsiz = (HPDF_UINT)HPDF_FREAD(ptr, 1, *siz, fp);
  
      if (rsiz != *siz) {
          if (HPDF_FEOF(fp)) {
***************
*** 1004,1010 ****
      HPDF_PTRACE((" HPDF_FileWriter_WriteFunc\n"));
  
      fp = (HPDF_FILEP)stream->attr;
-     ret = HPDF_FWRITE (ptr, 1, siz, fp);
  
      if (ret != siz) {
          return HPDF_SetError (stream->error, HPDF_FILE_IO_ERROR, HPDF_FERROR(fp));
--- 1038,1044 ----
      HPDF_PTRACE((" HPDF_FileWriter_WriteFunc\n"));
  
      fp = (HPDF_FILEP)stream->attr;
+     ret = (HPDF_UINT)HPDF_FWRITE (ptr, 1, siz, fp);
  
      if (ret != siz) {
          return HPDF_SetError (stream->error, HPDF_FILE_IO_ERROR, HPDF_FERROR(fp));