--- Compress-LZF/LZF.xs	2001/09/27 20:05:38	1.4
+++ Compress-LZF/LZF.xs	2002/03/03 04:45:18	1.9
@@ -24,6 +24,8 @@
 #define MAGIC_undef	2 /* the special value undef */
 #define MAGIC_CR	3 /* storable (reference, freeze), compressed */
 #define MAGIC_R		4 /* storable (reference, freeze) */
+#define MAGIC_CR_deref	5 /* storable (NO reference, freeze), compressed */
+#define MAGIC_R_deref	6 /* storable NO (reference, freeze) */
 #define MAGIC_HI	7 /* room for one higher storable major */
 
 #define IN_RANGE(v,l,h) ((unsigned int)((unsigned)(v) - (unsigned)(l)) <= (unsigned)(h) - (unsigned)(l))
@@ -232,9 +234,14 @@
             && SvTYPE(sv) != SVt_NV
             && SvTYPE(sv) != SVt_PV) /* mstore */
           {
+            int deref = !SvROK (sv);
+
             if (!storable_mstore)
               need_storable ();
 
+            if (deref)
+              sv = newRV_noinc (sv);
+
             PUSHMARK (SP);
             XPUSHs (sv);
             PUTBACK;
@@ -250,9 +257,14 @@
               croak ("Storable format changed, need newer version of Compress::LZF");
 
             if (ix) /* compress */
-              XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_CR, 0)));
+              XPUSHs (sv_2mortal (compress_sv (sv, deref ? MAGIC_CR_deref : MAGIC_CR, 0)));
             else
-              XPUSHs (sv);
+              {
+                if (deref)
+                  SvPVX (sv)[0] = MAGIC_R_deref;
+
+                XPUSHs (sv);
+              }
           }
         else if (sv && IN_RANGE (SvPVX (sv)[0], MAGIC_LO, MAGIC_HI))
           XPUSHs (sv_2mortal (compress_sv (sv, MAGIC_C, 1))); /* need to prefix only */
@@ -267,7 +279,10 @@
         PROTOTYPE: $
         PPCODE:
 
-        if (IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI))
+        int deref = 0;
+
+        SvGETMAGIC (sv);
+        if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI))
           {
             switch (SvPVX (sv)[0])
               {
@@ -283,8 +298,16 @@
                   XPUSHs (sv_2mortal (decompress_sv (sv, 1)));
                   break;
 
+                case MAGIC_CR_deref:
+                  deref = 1;
                 case MAGIC_CR:
                   sv = sv_2mortal (decompress_sv (sv, 1)); /* mortal could be optimized */
+                case MAGIC_R_deref:
+                  if (SvPVX (sv)[0] == MAGIC_R_deref)
+                    {
+                      deref = 1;
+                      SvPVX (sv)[0] = MAGIC_R;
+                    }
                 case MAGIC_R:
                   if (!storable_mstore)
                     need_storable ();
@@ -298,7 +321,18 @@
 
                   SPAGAIN;
 
-                  XPUSHs (POPs); /* this is a nop, hope the compiler also knows this */
+                  if (deref)
+                    {
+                      SV *ref = SvREFCNT_inc (SvRV (TOPs));
+
+                      SvREFCNT_dec (TOPs); /* destroy superfluous ref */
+                      SETs (ref);
+
+                      if (SvPVX (sv)[0] == MAGIC_R)
+                        SvPVX (sv)[0] = MAGIC_R;
+                    }
+
+                  XPUSHs (POPs); /* this is a nop, hopefully */
 
                   break;