--- Compress-LZF/LZF.xs	2002/09/05 04:44:55	1.14
+++ Compress-LZF/LZF.xs	2002/09/05 22:00:54	1.15
@@ -257,6 +257,8 @@
               || (SvTYPE(sv) != SVt_IV
                  && SvTYPE(sv) != SVt_NV
                  && SvTYPE(sv) != SVt_PV
+                 && SvTYPE(sv) != SVt_PVIV
+                 && SvTYPE(sv) != SVt_PVNV
                  && SvTYPE(sv) != SVt_PVMG)) /* mstore */
           {
             int deref = !SvROK (sv);
@@ -293,8 +295,14 @@
           XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, MAGIC_U))); /* need to prefix only */
         else if (ix == 2) /* compress always */
           XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, -1)));
+        else if (SvNIOK (sv)) /* don't compress */
+          {
+            STRLEN len;
+            char *s = SvPV (sv, len);
+            XPUSHs (sv_2mortal (newSVpvn (s, len)));
+          }
         else /* don't compress */
-          XPUSHs (sv_2mortal (SvREFCNT_inc (sv)));
+          XPUSHs (sv_2mortal (newSVsv (sv)));
 
 void
 sthaw(sv)