X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=Magic.xs;h=afb7713c62a12504ae16fc13737905367938dd93;hb=69d59682d7e861e55be7a1b125c2e60e797a7d74;hp=35bc61c67b0df670439e2ee4bd4950624715c6b4;hpb=505df7ba40320da17bdda154554d76e372cfc56f;p=perl%2Fmodules%2FVariable-Magic.git

diff --git a/Magic.xs b/Magic.xs
index 35bc61c..afb7713 100644
--- a/Magic.xs
+++ b/Magic.xs
@@ -12,6 +12,13 @@
 
 #define __PACKAGE__ "Variable::Magic"
 
+#undef VOID2
+#ifdef __cplusplus
+# define VOID2(T, P) static_cast<T>(P)
+#else
+# define VOID2(T, P) (P)
+#endif
+
 #ifndef VMG_PERL_PATCHLEVEL
 # ifdef PERL_PATCHNUM
 #  define VMG_PERL_PATCHLEVEL PERL_PATCHNUM
@@ -79,13 +86,25 @@
 
 STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 #define vmg_clone(P, O) vmg_clone(aTHX_ (P), (O))
+ SV *dupsv;
+
+#if VMG_HAS_PERL(5, 13, 2)
+ CLONE_PARAMS *param = Perl_clone_params_new(owner, aTHX);
+
+ dupsv = sv_dup(sv, param);
+
+ Perl_clone_params_del(param);
+#else
  CLONE_PARAMS param;
 
  param.stashes    = NULL; /* don't need it unless sv is a PVHV */
  param.flags      = 0;
  param.proto_perl = owner;
 
- return SvREFCNT_inc(sv_dup(sv, &param));
+ dupsv = sv_dup(sv, &param);
+#endif
+
+ return SvREFCNT_inc(dupsv);
 }
 
 #endif /* VMG_THREADSAFE */
@@ -100,12 +119,16 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 # define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
 #endif
 
-#ifndef mPUSHu
-# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
+#ifndef SvRV_const
+# define SvRV_const(sv) SvRV((SV *) sv)
+#endif
+
+#ifndef SvREFCNT_inc_simple_void
+# define SvREFCNT_inc_simple_void(sv) ((void) SvREFCNT_inc(sv))
 #endif
 
-#ifndef SvPV_const
-# define SvPV_const SvPV
+#ifndef mPUSHu
+# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
 #endif
 
 #ifndef PERL_MAGIC_ext
@@ -132,18 +155,8 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 # define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling)
 #endif
 
-#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser)
-# ifndef PL_error_count
-#  define PL_error_count PL_parser->error_count
-# endif
-#else
-# ifndef PL_error_count
-#  define PL_error_count PL_Ierror_count
-# endif
-#endif
-
-/* uvar magic and Hash::Util::FieldHash were commited with 28419, but only
- * enable it on 5.10 */
+/* uvar magic and Hash::Util::FieldHash were commited with 28419, but we only
+ * enable them on 5.10 */
 #if VMG_HAS_PERL(5, 10, 0)
 # define VMG_UVAR 1
 #else
@@ -154,9 +167,11 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
  * reverted to dev-5.11 as 9cdcb38b */
 #if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0)
 # ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
-/* This branch should only apply for perls before the official 5.11.0 release.
- * Makefile.PL takes care of the higher ones. */
-#  define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+#  if VMG_HAS_PERL(5, 11, 0)
+#   define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+#  else
+#   define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+#  endif
 # endif
 # ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID
 #  define VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID 1
@@ -171,7 +186,7 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 #endif
 
 /* Applied to dev-5.11 as 34908 */
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908)
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908) || VMG_HAS_PERL(5, 12, 0)
 # define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 1
 #else
 # define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 0
@@ -184,35 +199,119 @@ STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) {
 # define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
 #endif
 
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969)
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969) || VMG_HAS_PERL(5, 12, 0)
 # define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
 #else
 # define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
 #endif
 
-#if VMG_UVAR
+#if VMG_HAS_PERL(5, 13, 2)
+# define VMG_COMPAT_GLOB_GET 1
+#else
+# define VMG_COMPAT_GLOB_GET 0
+#endif
+
+/* ... Bug-free mg_magical ................................................. */
+
+/* See the discussion at http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html */
 
-/* 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. */
+#if VMG_HAS_PERL(5, 11, 3)
+
+#define vmg_mg_magical(S) mg_magical(S)
+
+#else
+
+STATIC void vmg_mg_magical(SV *sv) {
+ const MAGIC *mg;
+
+ SvMAGICAL_off(sv);
  if ((mg = SvMAGIC(sv))) {
-  SvRMAGICAL_off(sv);
   do {
    const MGVTBL* const vtbl = mg->mg_virtual;
    if (vtbl) {
-    if (vtbl->svt_clear) {
+    if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
+     SvGMAGICAL_on(sv);
+    if (vtbl->svt_set)
+     SvSMAGICAL_on(sv);
+    if (vtbl->svt_clear)
      SvRMAGICAL_on(sv);
-     break;
-    }
    }
   } while ((mg = mg->mg_moremagic));
+  if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)))
+   SvRMAGICAL_on(sv);
  }
 }
 
-#endif /* VMG_UVAR */
+#endif
+
+/* ... Safe version of call_sv() ........................................... */
+
+#define VMG_SAVE_LAST_CX (!VMG_HAS_PERL(5, 8, 4) || VMG_HAS_PERL(5, 9, 5))
+
+STATIC I32 vmg_call_sv(pTHX_ SV *sv, I32 flags, I32 destructor) {
+#define vmg_call_sv(S, F, D) vmg_call_sv(aTHX_ (S), (F), (D))
+ I32 ret, cxix = 0, in_eval = 0;
+#if VMG_SAVE_LAST_CX
+ PERL_CONTEXT saved_cx;
+#endif
+ SV *old_err = NULL;
+
+ if (SvTRUE(ERRSV)) {
+  old_err = ERRSV;
+  ERRSV   = newSV(0);
+ }
+
+ if (cxstack_ix < cxstack_max) {
+  cxix = cxstack_ix + 1;
+  if (destructor && CxTYPE(cxstack + cxix) == CXt_EVAL)
+   in_eval = 1;
+ }
+
+#if VMG_SAVE_LAST_CX
+ /* The last popped context will be reused by call_sv(), but our callers may
+  * still need its previous value. Back it up so that it isn't clobbered. */
+ saved_cx = cxstack[cxix];
+#endif
+
+ ret = call_sv(sv, flags | G_EVAL);
+
+#if VMG_SAVE_LAST_CX
+ cxstack[cxix] = saved_cx;
+#endif
+
+ if (SvTRUE(ERRSV)) {
+  if (old_err) {
+   sv_setsv(old_err, ERRSV);
+   SvREFCNT_dec(ERRSV);
+   ERRSV = old_err;
+  }
+  if (IN_PERL_COMPILETIME) {
+   if (!PL_in_eval) {
+    if (PL_errors)
+     sv_catsv(PL_errors, ERRSV);
+    else
+     Perl_warn(aTHX_ "%s", SvPV_nolen(ERRSV));
+    SvCUR_set(ERRSV, 0);
+   }
+#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser)
+   if (PL_parser)
+    ++PL_parser->error_count;
+#elif defined(PL_error_count)
+   ++PL_error_count;
+#else
+   ++PL_Ierror_count;
+#endif
+   } else if (!in_eval)
+    croak(NULL);
+ } else {
+  if (old_err) {
+   SvREFCNT_dec(ERRSV);
+   ERRSV = old_err;
+  }
+ }
+
+ return ret;
+}
 
 /* --- Stolen chunk of B --------------------------------------------------- */
 
@@ -260,9 +359,11 @@ STATIC opclass vmg_opclass(const OP *o) {
   return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);
 
  if (o->op_type == OP_AELEMFAST) {
+#if PERL_VERSION <= 14
   if (o->op_flags & OPf_SPECIAL)
    return OPc_BASEOP;
   else
+#endif
 #ifdef USE_ITHREADS
    return OPc_PADOP;
 #else
@@ -335,8 +436,8 @@ STATIC const char vmg_argstorefailed[] = "Error while storing arguments";
 typedef struct {
  MGVTBL *vtbl;
 
- U8 uvar;
  U8 opinfo;
+ U8 uvar;
 
  SV *cb_data;
  SV *cb_get, *cb_set, *cb_len, *cb_clear, *cb_free;
@@ -363,26 +464,35 @@ STATIC void vmg_mgwiz_free(pTHX_ MGWIZ *w) {
  if (!w)
   return;
 
- if (w->cb_data)   SvREFCNT_dec(w->cb_data);
- if (w->cb_get)    SvREFCNT_dec(w->cb_get);
- if (w->cb_set)    SvREFCNT_dec(w->cb_set);
- if (w->cb_len)    SvREFCNT_dec(w->cb_len);
- if (w->cb_clear)  SvREFCNT_dec(w->cb_clear);
- if (w->cb_free)   SvREFCNT_dec(w->cb_free);
+ /* We reach this point in dirty state when ptable_free() is called from the
+  * atexit cleanup callback, and that the global table still holds a live
+  * wizard. This happens before all the SV bodies are freed, so all the wizard
+  * callbacks are still alive (as they are referenced by the undead wizard).
+  * Hence it is safe to decrement their refcount. Later on, the wizard free
+  * callback itself will trigger when the wizard body is reaped, but it will
+  * be skipped as it guards against dirty state - which is good since nothing
+  * has to be done anymore at that point. */
+
+ SvREFCNT_dec(w->cb_data);
+ SvREFCNT_dec(w->cb_get);
+ SvREFCNT_dec(w->cb_set);
+ SvREFCNT_dec(w->cb_len);
+ SvREFCNT_dec(w->cb_clear);
+ SvREFCNT_dec(w->cb_free);
 #if MGf_COPY
- if (w->cb_copy)   SvREFCNT_dec(w->cb_copy);
+ SvREFCNT_dec(w->cb_copy);
 #endif /* MGf_COPY */
 #if 0 /* MGf_DUP */
- if (w->cb_dup)    SvREFCNT_dec(w->cb_dup);
+ SvREFCNT_dec(w->cb_dup);
 #endif /* MGf_DUP */
 #if MGf_LOCAL
- if (w->cb_local)  SvREFCNT_dec(w->cb_local);
+ SvREFCNT_dec(w->cb_local);
 #endif /* MGf_LOCAL */
 #if VMG_UVAR
- if (w->cb_fetch)  SvREFCNT_dec(w->cb_fetch);
- if (w->cb_store)  SvREFCNT_dec(w->cb_store);
- if (w->cb_exists) SvREFCNT_dec(w->cb_exists);
- if (w->cb_delete) SvREFCNT_dec(w->cb_delete);
+ SvREFCNT_dec(w->cb_fetch);
+ SvREFCNT_dec(w->cb_store);
+ SvREFCNT_dec(w->cb_exists);
+ SvREFCNT_dec(w->cb_delete);
 #endif /* VMG_UVAR */
 
  Safefree(w->vtbl);
@@ -448,7 +558,7 @@ STATIC MGWIZ *vmg_mgwiz_clone(pTHX_ const MGWIZ *w) {
 #if VMG_THREADSAFE
 
 #define PTABLE_NAME        ptable
-#define PTABLE_VAL_FREE(V) vmg_mgwiz_free(V)
+#define PTABLE_VAL_FREE(V) vmg_mgwiz_free(VOID2(MGWIZ *, (V)))
 
 #define pPTBL  pTHX
 #define pPTBL_ pTHX_
@@ -478,13 +588,13 @@ START_MY_CXT
 #if VMG_THREADSAFE
 
 STATIC void vmg_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) {
- my_cxt_t *ud = ud_;
+ my_cxt_t *ud = VOID2(my_cxt_t *, ud_);
  MGWIZ *w;
 
  if (ud->owner == aTHX)
   return;
 
- w = vmg_mgwiz_clone(ent->val);
+ w = vmg_mgwiz_clone(VOID2(MGWIZ *, ent->val));
  if (w)
   ptable_store(ud->wizards, ent->key, w);
 }
@@ -530,12 +640,14 @@ STATIC SV *vmg_wizard_new(pTHX_ const MGWIZ *w) {
 STATIC const SV *vmg_wizard_validate(pTHX_ const SV *wiz) {
 #define vmg_wizard_validate(W) vmg_wizard_validate(aTHX_ (W))
  if (SvROK(wiz)) {
-  wiz = SvRV(wiz);
+  wiz = SvRV_const(wiz);
   if (SvIOK(wiz))
    return wiz;
  }
 
  croak(vmg_invalid_wiz);
+ /* Not reached */
+ return NULL;
 }
 
 #define vmg_wizard_id(W)         SvIVX((const SV *) (W))
@@ -575,7 +687,7 @@ STATIC const MGWIZ *vmg_wizard_mgwiz(pTHX_ const SV *wiz) {
 
  {
   dMY_CXT;
-  return ptable_fetch(MY_CXT.wizards, w);
+  return VOID2(const MGWIZ *, ptable_fetch(MY_CXT.wizards, w));
  }
 }
 
@@ -589,7 +701,7 @@ STATIC const MGWIZ *vmg_wizard_mgwiz(pTHX_ const SV *wiz) {
 
 STATIC const MAGIC *vmg_find(const SV *sv, const SV *wiz) {
  const MAGIC *mg, *moremagic;
- UV wid;
+ IV wid;
 
  if (SvTYPE(sv) < SVt_PVMG)
   return NULL;
@@ -598,7 +710,7 @@ STATIC const MAGIC *vmg_find(const SV *sv, const SV *wiz) {
  for (mg = SvMAGIC(sv); mg; mg = moremagic) {
   moremagic = mg->mg_moremagic;
   if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
-   UV zid = vmg_wizard_id(mg->mg_ptr);
+   IV zid = vmg_wizard_id(mg->mg_ptr);
    if (zid == wid)
     return mg;
   }
@@ -609,10 +721,10 @@ STATIC const MAGIC *vmg_find(const SV *sv, const SV *wiz) {
 
 /* ... Construct private data .............................................. */
 
-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))
+STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, SV **args, I32 items) {
+#define vmg_data_new(C, S, A, I) vmg_data_new(aTHX_ (C), (S), (A), (I))
+ I32 i;
  SV *nsv;
- I32 i, alen = (args == NULL) ? 0 : av_len(args);
 
  dSP;
 
@@ -620,20 +732,20 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) {
  SAVETMPS;
 
  PUSHMARK(SP);
- EXTEND(SP, alen + 1);
+ EXTEND(SP, items + 1);
  PUSHs(sv_2mortal(newRV_inc(sv)));
- for (i = 0; i < alen; ++i)
-  PUSHs(*av_fetch(args, i, 0));
+ for (i = 0; i < items; ++i)
+  PUSHs(args[i]);
  PUTBACK;
 
- call_sv(ctor, G_SCALAR);
+ vmg_call_sv(ctor, G_SCALAR, 0);
 
  SPAGAIN;
  nsv = POPs;
 #if VMG_HAS_PERL(5, 8, 3)
- SvREFCNT_inc(nsv);    /* Or it will be destroyed in FREETMPS */
+ SvREFCNT_inc_simple_void(nsv); /* Or it will be destroyed in FREETMPS */
 #else
- nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */
+ nsv = sv_newref(nsv);          /* Workaround some bug in SvREFCNT_inc() */
 #endif
  PUTBACK;
 
@@ -647,7 +759,7 @@ STATIC SV *vmg_data_get(pTHX_ SV *sv, const SV *wiz) {
 #define vmg_data_get(S, W) vmg_data_get(aTHX_ (S), (W))
  const MAGIC *mg = vmg_find(sv, wiz);
  return mg ? mg->mg_obj : NULL;
-} 
+}
 
 /* ... Magic cast/dispell .................................................. */
 
@@ -666,9 +778,9 @@ STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic)
 }
 #endif /* VMG_UVAR */
 
-STATIC UV vmg_cast(pTHX_ SV *sv, const SV *wiz, AV *args) {
-#define vmg_cast(S, W, A) vmg_cast(aTHX_ (S), (W), (A))
- MAGIC       *mg, *moremagic = NULL;
+STATIC UV vmg_cast(pTHX_ SV *sv, const SV *wiz, SV **args, I32 items) {
+#define vmg_cast(S, W, A, I) vmg_cast(aTHX_ (S), (W), (A), (I))
+ MAGIC       *mg;
  SV          *data;
  const MGWIZ *w;
  U32          oldgmg;
@@ -679,8 +791,11 @@ STATIC UV vmg_cast(pTHX_ SV *sv, const SV *wiz, AV *args) {
  w = vmg_wizard_mgwiz(wiz);
  oldgmg = SvGMAGICAL(sv);
 
- 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);
+ data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args, items) : NULL;
+ /* sv_magicext() calls mg_magical and increments data's refcount */
+ mg   = sv_magicext(sv, data, PERL_MAGIC_ext, w->vtbl,
+                              (const char *) wiz, HEf_SVKEY);
+ SvREFCNT_dec(data);
  mg->mg_private = SIG_WIZ;
 #if MGf_COPY
  if (w->cb_copy)
@@ -709,7 +824,7 @@ STATIC UV vmg_cast(pTHX_ SV *sv, const SV *wiz, AV *args) {
 
 #if VMG_UVAR
  if (w->uvar) {
-  MAGIC *prevmagic;
+  MAGIC *prevmagic, *moremagic = NULL;
   struct ufuncs uf[2];
 
   uf[0].uf_val   = vmg_svt_val;
@@ -738,7 +853,8 @@ STATIC UV vmg_cast(pTHX_ SV *sv, const SV *wiz, AV *args) {
    }
   }
 
-  vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf));
+  sv_magic(sv, NULL, PERL_MAGIC_uvar, (const char *) &uf, sizeof(uf));
+  vmg_mg_magical(sv);
   /* Our hash now carries uvar magic. The uvar/clear shortcoming has to be
    * handled by our uvar callback. */
  }
@@ -754,7 +870,7 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, const SV *wiz) {
  U32 uvars = 0;
 #endif /* VMG_UVAR */
  MAGIC *mg, *prevmagic, *moremagic = NULL;
- UV wid = vmg_wizard_id(wiz);
+ IV wid = vmg_wizard_id(wiz);
 
  if (SvTYPE(sv) < SVt_PVMG)
   return 0;
@@ -762,8 +878,10 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, const SV *wiz) {
  for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) {
   moremagic = mg->mg_moremagic;
   if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) {
+#if VMG_UVAR
    const MGWIZ *z   = vmg_wizard_mgwiz(mg->mg_ptr);
-   UV           zid = vmg_wizard_id(mg->mg_ptr);
+#endif /* VMG_UVAR */
+   IV           zid = vmg_wizard_id(mg->mg_ptr);
    if (zid == wid) {
 #if VMG_UVAR
     /* If the current has no uvar, short-circuit uvar deletion. */
@@ -833,6 +951,8 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, const SV *wiz) {
  }
 #endif /* VMG_UVAR */
 
+ vmg_mg_magical(sv);
+
  return 1;
 }
 
@@ -868,9 +988,9 @@ STATIC void vmg_op_info_init(pTHX_ unsigned int opinfo) {
   case VMG_OP_INFO_OBJECT: {
    dMY_CXT;
    if (!MY_CXT.b__op_stashes[0]) {
-    opclass c;
+    int c;
     require_pv("B.pm");
-    for (c = 0; c < OPc_MAX; ++c)
+    for (c = OPc_NULL; c < OPc_MAX; ++c)
      MY_CXT.b__op_stashes[c] = gv_stashpv(vmg_opclassnames[c], 1);
    }
    break;
@@ -904,23 +1024,15 @@ STATIC SV *vmg_op_info(pTHX_ unsigned int opinfo) {
 
 /* ... svt callbacks ....................................................... */
 
-#define VMG_CB_CALL_SET_RET(D) \
- {            \
-  SV *svr;    \
-  SPAGAIN;    \
-  svr = POPs; \
-  ret = SvOK(svr) ? SvIV(svr) : (D); \
-  PUTBACK;    \
- }
-
 #define VMG_CB_CALL_ARGS_MASK  15
 #define VMG_CB_CALL_ARGS_SHIFT 4
 #define VMG_CB_CALL_OPINFO     (VMG_OP_INFO_NAME|VMG_OP_INFO_OBJECT)
 
 STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
  va_list ap;
- int ret;
+ int ret = 0;
  unsigned int i, args, opinfo;
+ SV *svr;
 
  dSP;
 
@@ -944,9 +1056,13 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
   XPUSHs(vmg_op_info(opinfo));
  PUTBACK;
 
- call_sv(cb, G_SCALAR);
+ vmg_call_sv(cb, G_SCALAR, 0);
 
- VMG_CB_CALL_SET_RET(0);
+ SPAGAIN;
+ svr = POPs;
+ if (SvOK(svr))
+  ret = (int) SvIV(svr);
+ PUTBACK;
 
  FREETMPS;
  LEAVE;
@@ -954,12 +1070,15 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) {
  return ret;
 }
 
-#define vmg_cb_call1(I, F, S, A1) \
-        vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 1), (S), (A1))
-#define vmg_cb_call2(I, F, S, A1, A2) \
-        vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 2), (S), (A1), (A2))
-#define vmg_cb_call3(I, F, S, A1, A2, A3) \
-        vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 3), (S), (A1), (A2), (A3))
+#define VMG_CB_FLAGS(OI, A) \
+        ((((unsigned int) (OI)) << VMG_CB_CALL_ARGS_SHIFT) | (A))
+
+#define vmg_cb_call1(I, OI, S, A1) \
+        vmg_cb_call(aTHX_ (I), VMG_CB_FLAGS((OI), 1), (S), (A1))
+#define vmg_cb_call2(I, OI, S, A1, A2) \
+        vmg_cb_call(aTHX_ (I), VMG_CB_FLAGS((OI), 2), (S), (A1), (A2))
+#define vmg_cb_call3(I, OI, S, A1, A2, A3) \
+        vmg_cb_call(aTHX_ (I), VMG_CB_FLAGS((OI), 3), (S), (A1), (A2), (A3))
 
 STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) {
  const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
@@ -975,6 +1094,7 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  const MGWIZ *w = vmg_wizard_mgwiz(mg->mg_ptr);
  unsigned int opinfo = w->opinfo;
  U32 len, ret;
+ SV *svr;
  svtype t = SvTYPE(sv);
 
  dSP;
@@ -988,7 +1108,11 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
  PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef);
  if (t < SVt_PVAV) {
   STRLEN l;
-  const U8 *s = (const U8 *) SvPV_const(sv, l);
+#if VMG_HAS_PERL(5, 9, 3)
+  const U8 *s = VOID2(const U8 *, VOID2(const void *, SvPV_const(sv, l)));
+#else
+  U8 *s = SvPV(sv, l);
+#endif
   if (DO_UTF8(sv))
    len = utf8_length(s, s + l);
   else
@@ -1005,14 +1129,19 @@ STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) {
   XPUSHs(vmg_op_info(opinfo));
  PUTBACK;
 
- call_sv(w->cb_len, G_SCALAR);
+ vmg_call_sv(w->cb_len, G_SCALAR, 0);
 
- VMG_CB_CALL_SET_RET(len);
+ SPAGAIN;
+ svr = POPs;
+ ret = SvOK(svr) ? (U32) SvUV(svr) : len;
+ if (t == SVt_PVAV)
+  --ret;
+ PUTBACK;
 
  FREETMPS;
  LEAVE;
 
- return t == SVt_PVAV ? ret - 1 : ret;
+ return ret;
 }
 
 STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
@@ -1022,12 +1151,8 @@ STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) {
 
 STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
  const MGWIZ *w;
-#if VMG_HAS_PERL(5, 9, 5)
- PERL_CONTEXT saved_cx;
- I32 cxix;
-#endif
- unsigned int had_err, has_err, flags = G_SCALAR | G_EVAL;
  int ret = 0;
+ SV *svr;
 
  dSP;
 
@@ -1039,9 +1164,9 @@ STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
  w = vmg_wizard_mgwiz(mg->mg_ptr);
 
  /* So that it survives the temp cleanup below */
- SvREFCNT_inc(sv);
+ SvREFCNT_inc_simple_void(sv);
 
-#if !VMG_HAS_PERL_MAINT(5, 11, 0, 32686)
+#if !(VMG_HAS_PERL_MAINT(5, 11, 0, 32686) || VMG_HAS_PERL(5, 12, 0))
  /* The previous magic tokens were freed but the magic chain wasn't updated, so
   * if you access the sv from the callback the old deleted magics will trigger
   * and cause memory misreads. Change 32686 solved it that way : */
@@ -1059,32 +1184,13 @@ STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
   XPUSHs(vmg_op_info(w->opinfo));
  PUTBACK;
 
- had_err = SvTRUE(ERRSV);
- if (had_err)
-  flags |= G_KEEPERR;
+ vmg_call_sv(w->cb_free, G_SCALAR, 1);
 
-#if VMG_HAS_PERL(5, 9, 5)
- /* This context should not be used anymore, but since we croak in places the
-  * core doesn't even dare to, some pointers to it may remain in the upper call
-  * stack. Make sure call_sv() doesn't clobber it. */
- if (cxstack_ix < cxstack_max)
-  cxix = cxstack_ix + 1;
- else
-  cxix = Perl_cxinc(aTHX);
- saved_cx = cxstack[cxix];
-#endif
-
- call_sv(w->cb_free, flags);
-
-#if VMG_HAS_PERL(5, 9, 5)
- cxstack[cxix] = saved_cx;
-#endif
-
- has_err = SvTRUE(ERRSV);
- if (IN_PERL_COMPILETIME && !had_err && has_err)
-  ++PL_error_count;
-
- VMG_CB_CALL_SET_RET(0);
+ SPAGAIN;
+ svr = POPs;
+ if (SvOK(svr))
+  ret = (int) SvIV(svr);
+ PUTBACK;
 
  FREETMPS;
  LEAVE;
@@ -1100,7 +1206,7 @@ STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) {
 
 #if MGf_COPY
 STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key,
-# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256)
+# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256) || VMG_HAS_PERL(5, 12, 0)
   I32 keylen
 # else
   int keylen
@@ -1290,6 +1396,7 @@ BOOT:
                     newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR));
  newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN",
                     newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
+ newCONSTSUB(stash, "VMG_COMPAT_GLOB_GET", newSVuv(VMG_COMPAT_GLOB_GET));
  newCONSTSUB(stash, "VMG_PERL_PATCHLEVEL", newSVuv(VMG_PERL_PATCHLEVEL));
  newCONSTSUB(stash, "VMG_THREADSAFE",      newSVuv(VMG_THREADSAFE));
  newCONSTSUB(stash, "VMG_FORKSAFE",        newSVuv(VMG_FORKSAFE));
@@ -1305,7 +1412,7 @@ PROTOTYPE: DISABLE
 PREINIT:
  ptable *t;
  U32     had_b__op_stash = 0;
- opclass c;
+ int     c;
 PPCODE:
  {
   my_cxt_t ud;
@@ -1315,7 +1422,7 @@ PPCODE:
   ud.owner   = MY_CXT.owner;
   ptable_walk(MY_CXT.wizards, vmg_ptable_clone, &ud);
 
-  for (c = 0; c < OPc_MAX; ++c) {
+  for (c = OPc_NULL; c < OPc_MAX; ++c) {
    if (MY_CXT.b__op_stashes[c])
     had_b__op_stash |= (((U32) 1) << c);
   }
@@ -1324,7 +1431,7 @@ PPCODE:
   MY_CXT_CLONE;
   MY_CXT.wizards = t;
   MY_CXT.owner   = aTHX;
-  for (c = 0; c < OPc_MAX; ++c) {
+  for (c = OPc_NULL; c < OPc_MAX; ++c) {
    MY_CXT.b__op_stashes[c] = (had_b__op_stash & (((U32) 1) << c))
                               ? gv_stashpv(vmg_opclassnames[c], 1) : NULL;
   }
@@ -1337,6 +1444,7 @@ SV *_wizard(...)
 PROTOTYPE: DISABLE
 PREINIT:
  I32 i = 0;
+ UV opinfo;
  MGWIZ *w;
  MGVTBL *t;
  SV *cb;
@@ -1362,10 +1470,13 @@ CODE:
  Newx(w, 1, MGWIZ);
 
  VMG_SET_CB(ST(i++), data);
+
  cb = ST(i++);
- w->opinfo = SvOK(cb) ? SvUV(cb) : 0;
+ opinfo = SvOK(cb) ? SvUV(cb) : 0;
+ w->opinfo = (U8) ((opinfo < 255) ? opinfo : 255);
  if (w->opinfo)
   vmg_op_info_init(w->opinfo);
+
  VMG_SET_SVT_CB(ST(i++), get);
  VMG_SET_SVT_CB(ST(i++), set);
  VMG_SET_SVT_CB(ST(i++), len);
@@ -1409,22 +1520,14 @@ OUTPUT:
 SV *cast(SV *sv, SV *wiz, ...)
 PROTOTYPE: \[$@%&*]$@
 PREINIT:
- AV *args = NULL;
- SV *ret;
+ SV **args = NULL;
+ I32 i = 0;
 CODE:
  if (items > 2) {
-  I32 i;
-  args = newAV();
-  av_fill(args, items - 2);
-  for (i = 2; i < items; ++i) {
-   SV *arg = ST(i);
-   SvREFCNT_inc(arg);
-   if (av_store(args, i - 2, arg) == NULL) croak(vmg_argstorefailed);
-  }
+  i = items - 2;
+  args = &ST(2);
  }
- ret = newSVuv(vmg_cast(SvRV(sv), vmg_wizard_validate(wiz), args));
- SvREFCNT_dec(args);
- RETVAL = ret;
+ RETVAL = newSVuv(vmg_cast(SvRV(sv), vmg_wizard_validate(wiz), args, i));
 OUTPUT:
  RETVAL