Re-order the definitions of the private bits in SvFLAGS by value, so

that we can see where we're already double-booked.

p4raw-id: //depot/perl@27259

diff --git a/sv.h b/sv.h
index 515645bb3ce1ae0ca93a3444fe76ff0130468d3d..da1891d9997a3ad58fab98c69eb172803e9e60ff 100644 (file)
--- a/sv.h
+++ b/sv.h
@@ -245,44 +245,54 @@ perform the upgrade if necessary.  See C<svtype>.
 #define SVp_NOK                0x02000000      /* has valid non-public numeric value */
 #define SVp_POK                0x04000000      /* has valid non-public pointer value */
 #define SVp_SCREAM     0x08000000      /* has been studied? */
+#define SVphv_CLONEABLE        0x08000000      /* PVHV (stashes) clone its objects */
 
-#define SVf_UTF8        0x20000000      /* SvPV is UTF-8 encoded */
-/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
 
 #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
 
 #define SVf_OK         (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
                         SVp_IOK|SVp_NOK|SVp_POK)
 
-#define SVf_AMAGIC     0x10000000      /* has magical overloaded methods */
-
 #define PRIVSHIFT 8    /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
 
+#define SVf_AMAGIC     0x10000000      /* has magical overloaded methods */
+#define SVf_UTF8        0x20000000      /* SvPV is UTF-8 encoded */
+/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
+
 /* Some private flags. */
 
-/* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
-#define SVpad_OUR      0x80000000      /* pad name is "our" instead of "my" */
+/* PVHV */
+#define SVphv_REHASH   0x10000000      /* PVHV is recalculating hash values */
+/* PVHV */
+#define SVphv_SHAREKEYS 0x20000000     /* PVHV
+                                          keys live on shared string table */
+/* PVNV, PVMG, PVGV, presumably only inside pads */
 #define SVpad_TYPED    0x40000000      /* Typed Lexical */
-
-#define SVf_IVisUV     0x80000000      /* use XPVUV instead of XPVIV */
-
-#define SVpfm_COMPILED 0x80000000      /* FORMLINE is compiled */
-
-#define SVpbm_VALID    0x80000000
+/* PVAV */
+#define SVpav_REAL     0x40000000      /* free old entries */
+/* PVHV */
+#define SVphv_LAZYDEL  0x40000000      /* entry in xhv_eiter must be deleted */
+/* PVBM */
 #define SVpbm_TAIL     0x40000000
-
+/* ??? */
 #define SVrepl_EVAL    0x40000000      /* Replacement part of s///e */
 
-#define SVphv_CLONEABLE        0x08000000      /* for stashes: clone its objects */
-#define SVphv_REHASH   0x10000000      /* HV is recalculating hash values */
-#define SVphv_SHAREKEYS 0x20000000     /* keys live on shared string table */
-#define SVphv_LAZYDEL  0x40000000      /* entry in xhv_eiter must be deleted */
+/* PVNV, PVMG, PVGV, presumably only inside pads */
+#define SVpad_OUR      0x80000000      /* pad name is "our" instead of "my" */
+/* IV, PVIV, PVNV, PVMG, PVGV and (I assume) PVLV  */
+/* Presumably IVs aren't stored in pads */
+#define SVf_IVisUV     0x80000000      /* use XPVUV instead of XPVIV */
+/* PVAV */
+#define SVpav_REIFY    0x80000000      /* can become real */
+/* PVHV */
 #define SVphv_HASKFLAGS        0x80000000      /* keys have flag byte after hash */
-
+/* PVFM */
+#define SVpfm_COMPILED 0x80000000      /* FORMLINE is compiled */
+/* PVBM */
+#define SVpbm_VALID    0x80000000
+/* RV upwards. However, SVf_ROK and SVp_IOK are exclusive  */
 #define SVprv_WEAKREF   0x80000000      /* Weak reference */
 
-#define SVpav_REAL     0x40000000      /* free old entries */
-#define SVpav_REIFY    0x80000000      /* can become real */
 
 struct xpv {
     NV         xnv_nv;         /* numeric value, if any */