X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=Magic.xs;h=89df570ec4d896ae54599ad0408221dccbcb1a64;hb=201d2874479e003bb82662085516a07aa04391e2;hp=2ae40a1df5d383bea56c687e04731f2d36dbfd4f;hpb=763ba8093427f3668368fa885741618ac6289d41;p=perl%2Fmodules%2FVariable-Magic.git

diff --git a/Magic.xs b/Magic.xs
index 2ae40a1..89df570 100644
--- a/Magic.xs
+++ b/Magic.xs
@@ -1,6 +1,8 @@
 /* This file is part of the Variable::Magic Perl module.
  * See http://search.cpan.org/dist/Variable-Magic/ */
 
+#include <stdarg.h> /* <va_list>, va_{start,arg,end}, ... */
+
 #include <stdio.h>  /* sprintf() */
 
 #define PERL_NO_GET_CONTEXT
@@ -12,9 +14,21 @@
 
 #define R(S) fprintf(stderr, "R(" #S ") = %d\n", SvREFCNT(S))
 
+#define PERL_VERSION_GE(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+
 #define PERL_VERSION_LE(R, V, S) (PERL_REVISION < (R) || (PERL_REVISION == (R) && (PERL_VERSION < (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION <= (S))))))
 
-#define PERL_API_VERSION_GE(R, V, S) (PERL_API_REVISION > (R) || (PERL_API_REVISION == (R) && (PERL_API_VERSION > (V) || (PERL_API_VERSION == (V) && (PERL_API_SUBVERSION >= (S))))))
+#ifndef VMG_PERL_PATCHLEVEL
+# ifdef PERL_PATCHNUM
+#  define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
+# else
+#  define VMG_PERL_PATCHLEVEL 0
+# endif
+#endif
+
+#define VMG_HAS_PERL_OR(P, R, V, S) ((VMG_PERL_PATCHLEVEL >= (P)) || (!VMG_PERL_PATCHLEVEL && PERL_VERSION_GE((R), (V), (S))))
+
+#define VMG_HAS_PERL_AND(P, R, V, S) (PERL_VERSION_GE((R), (V), (S)) && (!VMG_PERL_PATCHLEVEL || (VMG_PERL_PATCHLEVEL >= (P))))
 
 /* --- Compatibility ------------------------------------------------------- */
 
@@ -26,11 +40,24 @@
 # define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
 #endif
 
+#ifndef mPUSHi
+# define mPUSHi(I) PUSHs(sv_2mortal(newSViv(I)))
+#endif
+
 #ifndef dMY_CXT
-# define MY_CXT vmg_globaldata
 # define dMY_CXT
+# undef  MY_CXT
+# define MY_CXT vmg_globaldata
+# undef  START_MY_CXT
 # define START_MY_CXT STATIC my_cxt_t MY_CXT;
+# undef  MY_CXT_INIT
 # define MY_CXT_INIT
+# undef  MY_CXT_CLONE
+# undef  aMY_CXT
+# undef  pMY_CXT
+# define VMG_THREADSAFE 0
+#else
+# define VMG_THREADSAFE 1
 #endif
 
 #ifndef PERL_MAGIC_ext
@@ -41,7 +68,6 @@
 # define MGf_COPY 0
 #endif
 
-#undef MGf_DUP /* Disable it for now. */
 #ifndef MGf_DUP
 # define MGf_DUP 0
 #endif
@@ -50,34 +76,52 @@
 # define MGf_LOCAL 0
 #endif
 
-#if PERL_API_VERSION_GE(5, 10, 0)
+/* uvar magic and Hash::Util::FieldHash were commited with p28419 */
+#if VMG_HAS_PERL_AND(28419, 5, 9, 4)
 # define VMG_UVAR 1
 #else
 # define VMG_UVAR 0
 #endif
 
+#if !defined(VMG_COMPAT_ARRAY_PUSH_NOLEN) && VMG_HAS_PERL_OR(25854, 5, 9, 3)
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+#else
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+#endif
+
+/* since 5.9.5 - see #43357 */
+#if VMG_HAS_PERL_OR(31473, 5, 9, 5)
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
+#else
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
+#endif
+
+#if VMG_HAS_PERL_OR(32969, 5, 11, 0)
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
+#else
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
+#endif
+
 #if VMG_UVAR
 
-/* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html */
-STATIC void vmg_mg_magical(pTHX_ SV *sv) {
-#define vmg_mg_magical(S) vmg_mg_magical(aTHX_ (S))
+/* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html - but specialized to our needs. */
+STATIC void vmg_sv_magicuvar(pTHX_ SV *sv, const char *uf, I32 len) {
+#define vmg_sv_magicuvar(S, U, L) vmg_sv_magicuvar(aTHX_ (S), (U), (L))
  const MAGIC* mg;
+ sv_magic(sv, NULL, PERL_MAGIC_uvar, uf, len);
+ /* uvar magic has set and get magic, hence this has set SVs_GMG and SVs_SMG. */
  PERL_UNUSED_CONTEXT;
  if ((mg = SvMAGIC(sv))) {
   SvRMAGICAL_off(sv);
   do {
    const MGVTBL* const vtbl = mg->mg_virtual;
    if (vtbl) {
-    if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
-     SvGMAGICAL_on(sv);
-    if (vtbl->svt_set)
-     SvSMAGICAL_on(sv);
-    if (vtbl->svt_clear)
+    if (vtbl->svt_clear) {
      SvRMAGICAL_on(sv);
+     break;
+    }
    }
   } while ((mg = mg->mg_moremagic));
-  if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)))
-   SvRMAGICAL_on(sv);
  }
 }
 
@@ -94,12 +138,29 @@ typedef struct {
 
 START_MY_CXT
 
+STATIC void vmg_cxt_init
+#if defined(pMY_CXT) && defined(aMY_CXT)
+ (pTHX_ pMY_CXT) {
+# define vmg_cxt_init() vmg_cxt_init(aTHX_ aMY_CXT)
+#else
+ (pTHX) {
+ dMY_CXT;
+# define vmg_cxt_init() vmg_cxt_init(aTHX)
+#endif
+ MY_CXT.wizz = newHV();
+#ifdef USE_ITHREADS
+ HvSHAREKEYS_off(MY_CXT.wizz);
+#endif
+ MY_CXT.count = 0;
+ return;
+}
+
 /* --- Signatures ---------------------------------------------------------- */
 
 #define SIG_MIN ((U16) (1u << 8))
-#define SIG_MAX ((U16) (1u << 16 - 1))
+#define SIG_MAX ((U16) ((1u << 16) - 1))
 #define SIG_NBR (SIG_MAX - SIG_MIN + 1)
-#define SIG_WIZ ((U16) (1u << 8 - 1))
+#define SIG_WIZ ((U16) ((1u << 8) - 1))
 
 /* ... Generate signatures ................................................. */
 
@@ -146,6 +207,7 @@ typedef struct {
 STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
 #define vmg_data_new(C, S, A) vmg_data_new(aTHX_ (C), (S), (A))
  SV *nsv;
+ I32 i, alen = (args == NULL) ? 0 : av_len(args);
 
  dSP;
  int count;
@@ -154,11 +216,10 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
  SAVETMPS;
 
  PUSHMARK(SP);
- XPUSHs(sv_2mortal(newRV_inc(sv)));
- if (args != NULL) {
-  I32 i, alen = av_len(args);
-  for (i = 0; i < alen; ++i) { XPUSHs(*av_fetch(args, i, 0)); }
- }
+ EXTEND(SP, alen + 1);
+ PUSHs(sv_2mortal(newRV_inc(sv)));
+ for (i = 0; i < alen; ++i)
+  PUSHs(*av_fetch(args, i, 0));
  PUTBACK;
 
  count = call_sv(ctor, G_SCALAR);
@@ -183,7 +244,6 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
 
 STATIC SV *vmg_data_get(SV *sv, U16 sig) {
  MAGIC *mg, *moremagic;
- MGWIZ *w;
 
  if (SvTYPE(sv) >= SVt_PVMG) {
   for (mg = SvMAGIC(sv); mg; mg = moremagic) {
@@ -198,6 +258,7 @@ STATIC SV *vmg_data_get(SV *sv, U16 sig) {
 
 /* ... Magic cast/dispell .................................................. */
 
+#if VMG_UVAR
 STATIC I32 vmg_svt_val(pTHX_ IV, SV *);
 
 STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) {
@@ -210,6 +271,7 @@ STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic)
  Safefree(mg->mg_ptr);
  Safefree(mg);
 }
+#endif /* VMG_UVAR */
 
 STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
 #define vmg_cast(S, W, A) vmg_cast(aTHX_ (S), (W), (A))
@@ -230,17 +292,18 @@ STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
  data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args) : NULL;
  mg = sv_magicext(sv, data, PERL_MAGIC_ext, w->vtbl, (const char *) wiz, HEf_SVKEY);
  mg->mg_private = w->sig;
- mg->mg_flags   = mg->mg_flags
 #if MGf_COPY
-                | MGf_COPY
+ if (w->cb_copy)
+  mg->mg_flags |= MGf_COPY;
 #endif /* MGf_COPY */
 #if MGf_DUP
-                | MGf_DUP
+ if (w->cb_dup)
+  mg->mg_flags |= MGf_DUP;
 #endif /* MGf_DUP */
 #if MGf_LOCAL
-                | MGf_LOCAL
+ if (w->cb_local)
+  mg->mg_flags |= MGf_LOCAL;
 #endif /* MGf_LOCAL */
-                ;
 
 #if VMG_UVAR
  if (w->uvar && SvTYPE(sv) >= SVt_PVHV) {
@@ -274,8 +337,7 @@ STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) {
   }
 
   if (add_uvar) {
-   sv_magic(sv, NULL, PERL_MAGIC_uvar, (const char *) &uf, sizeof(uf));
-   vmg_mg_magical(sv);
+   vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
   }
 
  }
@@ -296,15 +358,19 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
  for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
   moremagic = mg->mg_moremagic;
   if (mg->mg_type == PERL_MAGIC_ext) {
-#if VMG_UVAR
-   MGWIZ *w = SV2MGWIZ(mg->mg_ptr);
-   if (w->uvar) { ++uvars; }
-#endif /* VMG_UVAR */
    if (mg->mg_private == sig) {
 #if VMG_UVAR
-    if (!w->uvar) { uvars = 0; } /* Short-circuit uvar deletion. */
+    /* If the current has no uvar, short-circuit uvar deletion. */
+    uvars = (SV2MGWIZ(mg->mg_ptr)->uvar) ? (uvars + 1) : 0;
 #endif /* VMG_UVAR */
     break;
+#if VMG_UVAR
+   } else if ((mg->mg_private >= SIG_MIN) &&
+              (mg->mg_private <= SIG_MAX) &&
+               SV2MGWIZ(mg->mg_ptr)->uvar) {
+    ++uvars;
+    /* We can't break here since we need to find the ext magic to delete. */
+#endif /* VMG_UVAR */
    }
   }
  }
@@ -326,7 +392,10 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
   /* mg was the first ext magic in the chain that had uvar */
 
   for (mg = moremagic; mg; mg = mg->mg_moremagic) {
-   if ((mg->mg_type == PERL_MAGIC_ext) && SV2MGWIZ(mg->mg_ptr)->uvar) {
+   if ((mg->mg_type == PERL_MAGIC_ext) &&
+       (mg->mg_private >= SIG_MIN) &&
+       (mg->mg_private <= SIG_MAX) &&
+        SV2MGWIZ(mg->mg_ptr)->uvar) {
     ++uvars;
     break;
    }
@@ -345,6 +414,7 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
     /* Revert the original uvar magic. */
     uf[0] = uf[1];
     Renew(uf, 1, struct ufuncs);
+    mg->mg_ptr = (char *) uf;
     mg->mg_len = sizeof(struct ufuncs);
    } else {
     /* Remove the uvar magic. */
@@ -359,9 +429,11 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) {
 
 /* ... svt callbacks ....................................................... */
 
-STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
-#define vmg_cb_call(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D))
+STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data, unsigned int args, ...) {
+ va_list ap;
+ SV *svr;
  int ret;
+ unsigned int i;
 
  dSP;
  int count;
@@ -370,8 +442,15 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
  SAVETMPS;
 
  PUSHMARK(SP);
- XPUSHs(sv_2mortal(newRV_inc(sv)));
- if (data) { XPUSHs(data); }
+ EXTEND(SP, args + 2);
+ PUSHs(sv_2mortal(newRV_inc(sv)));
+ PUSHs(data ? data : &PL_sv_undef);
+ va_start(ap, args);
+ for (i = 0; i < args; ++i) {
+  SV *sva = va_arg(ap, SV *);
+  PUSHs(sva ? sva : &PL_sv_undef);
+ }
+ va_end(ap);
  PUTBACK;
 
  count = call_sv(cb, G_SCALAR);
@@ -379,7 +458,8 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
  SPAGAIN;
 
  if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
- ret = POPi;
+ svr = POPs;
+ ret = SvOK(svr) ? SvIV(svr) : 0;
 
  PUTBACK;
 
@@ -389,48 +469,21 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) {
  return ret;
 }
 
-#if MGf_COPY || VMG_UVAR
-STATIC int vmg_cb_call2(pTHX_ SV *cb, SV *sv, SV *data, SV *sv2) {
-#define vmg_cb_call2(I, S, D, S2) vmg_cb_call2(aTHX_ (I), (S), (D), (S2))
- int ret;
-
- dSP;
- int count;
-
- ENTER;
- SAVETMPS;
-
- PUSHMARK(SP);
- XPUSHs(sv_2mortal(newRV_inc(sv)));
- XPUSHs(data ? data : &PL_sv_undef);
- if (sv2) { XPUSHs(sv2); }
- PUTBACK;
-
- count = call_sv(cb, G_SCALAR);
-
- SPAGAIN;
-
- if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
- ret = POPi;
-
- PUTBACK;
-
- FREETMPS;
- LEAVE;
-
- return ret;
-}
-#endif /* MGf_COPY || VMG_UVAR */
+#define vmg_cb_call1(I, S, D)         vmg_cb_call(aTHX_ (I), (S), (D), 0)
+#define vmg_cb_call2(I, S, D, S2)     vmg_cb_call(aTHX_ (I), (S), (D), 1, (S2))
+#define vmg_cb_call3(I, S, D, S2, S3) vmg_cb_call(aTHX_ (I), (S), (D), 2, (S2), (S3))
 
 STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
- return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_get, sv, mg->mg_obj);
+ return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_get, sv, mg->mg_obj);
 }
 
 STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) {
- return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_set, sv, mg->mg_obj);
+ return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_set, sv, mg->mg_obj);
 }
 
 STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
+ SV *svr;
+ I32 len;
  U32 ret;
 
  dSP;
@@ -440,10 +493,15 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  SAVETMPS;
 
  PUSHMARK(SP);
- XPUSHs(sv_2mortal(newRV_inc(sv)));
- XPUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
+ EXTEND(SP, 3);
+ PUSHs(sv_2mortal(newRV_inc(sv)));
+ PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
  if (SvTYPE(sv) == SVt_PVAV) {
-  XPUSHs(sv_2mortal(newSViv(av_len((AV *) sv) + 1)));
+  len = av_len((AV *) sv) + 1;
+  mPUSHi(len);
+ } else {
+  len = 1;
+  PUSHs(&PL_sv_undef);
  }
  PUTBACK;
 
@@ -452,7 +510,8 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  SPAGAIN;
 
  if (count != 1) { croak("Callback needs to return 1 scalar\n"); }
- ret = POPi;
+ svr = POPs;
+ ret = SvOK(svr) ? SvUV(svr) : len;
 
  PUTBACK;
 
@@ -463,7 +522,7 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
 }
 
 STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
- return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_clear, sv, mg->mg_obj);
+ return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_clear, sv, mg->mg_obj);
 }
 
 STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
@@ -471,16 +530,37 @@ STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
  SvREFCNT_inc(sv);
  /* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and
   * mg->mg_ptr reference count */
- return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj);
+ return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj);
 }
 
 #if MGf_COPY
-STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, int namelen) {
- return vmg_cb_call2(SV2MGWIZ(mg->mg_ptr)->cb_copy, sv, mg->mg_obj, nsv);
+STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
+# if VMG_HAS_PERL_AND(33256, 5, 11, 0)
+  I32 keylen
+# else
+  int keylen
+# endif
+ ) {
+ SV *keysv;
+ int ret;
+
+ if (keylen == HEf_SVKEY) {
+  keysv = (SV *) key;
+ } else {
+  keysv = newSVpvn(key, keylen);
+ }
+
+ ret = vmg_cb_call3(SV2MGWIZ(mg->mg_ptr)->cb_copy, sv, mg->mg_obj, keysv, nsv);
+
+ if (keylen != HEf_SVKEY) {
+  SvREFCNT_dec(keysv);
+ }
+
+ return ret;
 }
 #endif /* MGf_COPY */
 
-#if MGf_DUP
+#if 0 /*  MGf_DUP */
 STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
  return 0;
 }
@@ -488,7 +568,7 @@ STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) {
 
 #if MGf_LOCAL
 STATIC int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) {
- return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_local, nsv, mg->mg_obj);
+ return vmg_cb_call1(SV2MGWIZ(mg->mg_ptr)->cb_local, nsv, mg->mg_obj);
 }
 #endif /* MGf_LOCAL */
 
@@ -513,20 +593,21 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
    || (mg->mg_private < SIG_MIN)
    || (mg->mg_private > SIG_MAX)) { continue; }
   w = SV2MGWIZ(mg->mg_ptr);
+  if (!w->uvar) { continue; }
   switch (action) {
    case 0:
-    vmg_cb_call2(w->cb_fetch, sv, mg->mg_obj, key);
+    if (w->cb_fetch)  { vmg_cb_call2(w->cb_fetch,  sv, mg->mg_obj, key); }
     break;
    case HV_FETCH_ISSTORE:
    case HV_FETCH_LVALUE:
    case (HV_FETCH_ISSTORE|HV_FETCH_LVALUE):
-    vmg_cb_call2(w->cb_store, sv, mg->mg_obj, key);
+    if (w->cb_store)  { vmg_cb_call2(w->cb_store,  sv, mg->mg_obj, key); }
     break;
    case HV_FETCH_ISEXISTS:
-    vmg_cb_call2(w->cb_exists, sv, mg->mg_obj, key);
+    if (w->cb_exists) { vmg_cb_call2(w->cb_exists, sv, mg->mg_obj, key); }
     break;
    case HV_DELETE:
-    vmg_cb_call2(w->cb_delete, sv, mg->mg_obj, key);
+    if (w->cb_delete) { vmg_cb_call2(w->cb_delete, sv, mg->mg_obj, key); }
     break;
   }
  }
@@ -544,13 +625,11 @@ STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) {
 
  w = SV2MGWIZ(wiz);
 
- SvREFCNT_inc(wiz); /* Fake survival - it's gonna be deleted anyway */
-#if PERL_API_VERSION_GE(5, 9, 5)
- SvREFCNT_inc(wiz); /* One more push */
-#endif
  if (hv_delete(MY_CXT.wizz, buf, sprintf(buf, "%u", w->sig), 0)) {
   --MY_CXT.count;
  }
+ SvFLAGS(wiz) |= SVf_BREAK;
+ FREETMPS;
 
  if (w->cb_data  != NULL) { SvREFCNT_dec(SvRV(w->cb_data)); }
  if (w->cb_get   != NULL) { SvREFCNT_dec(SvRV(w->cb_get)); }
@@ -563,10 +642,10 @@ STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) {
 #endif /* MGf_COPY */
 #if MGf_DUP
  if (w->cb_dup   != NULL) { SvREFCNT_dec(SvRV(w->cb_dup)); }
-#endif /* MGf_COPY */
+#endif /* MGf_DUP */
 #if MGf_LOCAL
  if (w->cb_local != NULL) { SvREFCNT_dec(SvRV(w->cb_local)); }
-#endif /* MGf_COPY */
+#endif /* MGf_LOCAL */
 #if VMG_UVAR
  if (w->cb_fetch  != NULL) { SvREFCNT_dec(SvRV(w->cb_fetch)); }
  if (w->cb_store  != NULL) { SvREFCNT_dec(SvRV(w->cb_store)); }
@@ -593,7 +672,7 @@ STATIC MGVTBL vmg_wizard_vtbl = {
 #endif /* MGf_DUP */
 #if MGf_LOCAL
  NULL,            /* local */
-#endif /* MGf_DUP */
+#endif /* MGf_LOCAL */
 };
 
 STATIC const char vmg_invalid_wiz[]    = "Invalid wizard object";
@@ -647,8 +726,7 @@ BOOT:
 {
  HV *stash;
  MY_CXT_INIT;
- MY_CXT.wizz = newHV();
- MY_CXT.count = 0;
+ vmg_cxt_init();
  stash = gv_stashpv(__PACKAGE__, 1);
  newCONSTSUB(stash, "SIG_MIN",   newSVuv(SIG_MIN));
  newCONSTSUB(stash, "SIG_MAX",   newSVuv(SIG_MAX));
@@ -657,8 +735,25 @@ BOOT:
  newCONSTSUB(stash, "MGf_DUP",   newSVuv(MGf_DUP));
  newCONSTSUB(stash, "MGf_LOCAL", newSVuv(MGf_LOCAL));
  newCONSTSUB(stash, "VMG_UVAR",  newSVuv(VMG_UVAR));
+ newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
+                    newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNDEF_CLEAR",
+                    newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR));
+ newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
+                    newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
+ newCONSTSUB(stash, "VMG_PERL_PATCHLEVEL", newSVuv(VMG_PERL_PATCHLEVEL));
+ newCONSTSUB(stash, "VMG_THREADSAFE",      newSVuv(VMG_THREADSAFE));
 }
 
+void
+CLONE(...)
+PROTOTYPE: DISABLE
+CODE:
+#ifdef MY_CXT_CLONE
+ MY_CXT_CLONE;
+ vmg_cxt_init();
+#endif
+
 SV *_wizard(...)
 PROTOTYPE: DISABLE
 PREINIT:
@@ -693,7 +788,7 @@ CODE:
  if (SvOK(svsig)) {
   SV **old;
   sig = vmg_sv2sig(svsig);
-  if (old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0)) {
+  if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
    ST(0) = sv_2mortal(newRV_inc(*old));
    XSRETURN(1);
   }
@@ -715,7 +810,10 @@ CODE:
  VMG_SET_SVT_CB(ST(i++), copy);
 #endif /* MGf_COPY */
 #if MGf_DUP
- VMG_SET_SVT_CB(ST(i++), dup);
+ /* VMG_SET_SVT_CB(ST(i++), dup); */
+ i++;
+ t->svt_dup = NULL;
+ w->cb_dup  = NULL;
 #endif /* MGf_DUP */
 #if MGf_LOCAL
  VMG_SET_SVT_CB(ST(i++), local);
@@ -739,7 +837,7 @@ CODE:
 
  hv_store(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), sv, 0);
  ++MY_CXT.count;
- 
+
  RETVAL = newRV_noinc(sv);
 OUTPUT:
  RETVAL
@@ -774,7 +872,7 @@ CODE:
   char buf[8];
   SV **old;
   U16 sig = vmg_sv2sig(wiz);
-  if (old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0)) {
+  if ((old = hv_fetch(MY_CXT.wizz, buf, sprintf(buf, "%u", sig), 0))) {
    wiz = *old;
   } else {
    XSRETURN_UNDEF;
@@ -818,7 +916,7 @@ CODE:
  }
  data = vmg_data_get(SvRV(sv), sig);
  if (!data) { XSRETURN_UNDEF; }
- ST(0) = newSVsv(data);
+ ST(0) = data;
  XSRETURN(1);
 
 SV *dispell(SV *sv, SV *wiz)