Test 'delete' uvar magic and introduce VMG_COMPAT_HASH_DELETE_NOUVAR_VOID

[perl/modules/Variable-Magic.git] / Magic.xs

diff --git a/Magic.xs b/Magic.xs
index 1e6a77c823a99a7ddcdf3e3ffeece4b86dd630f4..0c99f2c6e2694ce1b62b3fce6d44d526c99942cd 100644 (file)
--- a/Magic.xs
+++ b/Magic.xs
@@ -133,6 +133,12 @@
 # define VMG_UVAR 0
 #endif
 
+#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
+
 /* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160, partially
  * 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)
@@ -169,10 +175,10 @@
 # define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
 #endif
 
-#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969) || VMG_HAS_PERL(5, 12, 0)
-# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
+#if VMG_HAS_PERL(5, 11, 0)
+# define VMG_COMPAT_HASH_DELETE_NOUVAR_VOID 1
 #else
-# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
+# define VMG_COMPAT_HASH_DELETE_NOUVAR_VOID 0
 #endif
 
 #if VMG_HAS_PERL(5, 13, 2)
@@ -1257,9 +1263,9 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
  if (uf[1].uf_set)
   uf[1].uf_set(aTHX_ action, sv);
 
- action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE;
  for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
   const vmg_wizard *w;
+
   switch (mg->mg_type) {
    case PERL_MAGIC_ext:
     break;
@@ -1269,8 +1275,11 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
    default:
     continue;
   }
+
   w = vmg_wizard_from_mg(mg);
-  if (!w) continue;
+  if (!w)
+   continue;
+
   switch (w->uvar) {
    case 0:
     continue;
@@ -1278,7 +1287,9 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
     if (!newkey)
      newkey = key = umg->mg_obj = sv_mortalcopy(umg->mg_obj);
   }
-  switch (action) {
+
+  switch (action
+             & (HV_FETCH_ISSTORE|HV_FETCH_ISEXISTS|HV_FETCH_LVALUE|HV_DELETE)) {
    case 0:
     if (w->cb_fetch)
      vmg_cb_call2(w->cb_fetch, w->opinfo, sv, mg->mg_obj, key);
@@ -1300,21 +1311,21 @@ STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) {
   }
  }
 
- if (SvRMAGICAL(sv) && !tied) {
+ if (SvRMAGICAL(sv) && !tied && !(action & (HV_FETCH_ISSTORE|HV_DELETE))) {
   /* Temporarily hide the RMAGICAL flag of the hash so it isn't wrongly
    * mistaken for a tied hash by the rest of hv_common. It will be reset by
    * the op_ppaddr of a new fake op injected between the current and the next
    * one. */
-  OP *o = PL_op;
-  if (!o->op_next || o->op_next->op_ppaddr != vmg_pp_resetuvar) {
+  OP *nop = PL_op->op_next;
+  if (!nop || nop->op_ppaddr != vmg_pp_resetuvar) {
    SVOP *svop;
    NewOp(1101, svop, 1, SVOP);
    svop->op_type   = OP_STUB;
    svop->op_ppaddr = vmg_pp_resetuvar;
-   svop->op_next   = o->op_next;
+   svop->op_next   = nop;
    svop->op_flags  = 0;
    svop->op_sv     = sv;
-   o->op_next      = (OP *) svop;
+   PL_op->op_next  = (OP *) svop;
   }
   SvRMAGICAL_off(sv);
  }
@@ -1361,6 +1372,8 @@ 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_SCALAR_LENGTH_NOLEN",
+                    newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN));
  newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN",
                     newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN));
  newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID",
@@ -1369,8 +1382,8 @@ BOOT:
                     newSVuv(VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID));
  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_COMPAT_HASH_DELETE_NOUVAR_VOID",
+                    newSVuv(VMG_COMPAT_HASH_DELETE_NOUVAR_VOID));
  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));