Add the verbatim perl code mentioned in the comments of

[p5sagit/p5-mst-13.2.git] / mg.c

diff --git a/mg.c b/mg.c
index 5cfcc46..dfe1fb7 100644 (file)
--- a/mg.c
+++ b/mg.c
@@ -123,16 +123,21 @@ Perl_mg_magical(pTHX_ SV *sv)
     const MAGIC* mg;
     PERL_ARGS_ASSERT_MG_MAGICAL;
     PERL_UNUSED_CONTEXT;
-    for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
-       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 (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear)
-               SvRMAGICAL_on(sv);
-       }
+    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)
+                   SvRMAGICAL_on(sv);
+           }
+       } while ((mg = mg->mg_moremagic));
+       if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)))
+           SvRMAGICAL_on(sv);
     }
 }
 
@@ -1555,7 +1560,8 @@ Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
         * tell whether HINT_STRICT_REFS is in force or not.
         */
        if (!strchr(s,':') && !strchr(s,'\''))
-           Perl_sv_insert(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"));
+           Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"),
+                                SV_GMAGIC);
        if (i)
            (void)rsignal(i, PL_csighandlerp);
        else
@@ -1601,7 +1607,8 @@ Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
             : (GV*)SvMAGIC(mg->mg_obj)->mg_obj
     );
 
-    mro_isa_changed_in(stash);
+    if (stash)
+       mro_isa_changed_in(stash);
 
     return 0;
 }
@@ -1626,7 +1633,8 @@ Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg)
             : (GV*)SvMAGIC(mg->mg_obj)->mg_obj
     );
 
-    mro_isa_changed_in(stash);
+    if (stash)
+       mro_isa_changed_in(stash);
 
     return 0;
 }
@@ -3135,7 +3143,7 @@ Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg)
 }
 
 /*
-=for apidoc magic_sethint
+=for apidoc magic_clearhint
 
 Triggered by a delete from %^H, records the key to
 C<PL_compiling.cop_hints_hash>.