(??{...}) didn't always restore PL_reg_re.

[perl5.git] / universal.c

diff --git a/universal.c b/universal.c
index 097247b..8802cb2 100644 (file)
--- a/universal.c
+++ b/universal.c
@@ -31,7 +31,7 @@
  * The main guts of traverse_isa was actually copied from gv_fetchmeth
  */
 
-STATIC SV *
+STATIC bool
 S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash,
              int len, int level)
 {
@@ -46,15 +46,15 @@ S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash,
     /* A stash/class can go by many names (ie. User == main::User), so 
        we compare the stash itself just in case */
     if (name_stash && (stash == name_stash))
-        return &PL_sv_yes;
+        return TRUE;
 
     hvname = HvNAME_get(stash);
 
     if (strEQ(hvname, name))
-       return &PL_sv_yes;
+       return TRUE;
 
     if (strEQ(name, "UNIVERSAL"))
-       return &PL_sv_yes;
+       return TRUE;
 
     if (level > 100)
        Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'",
@@ -71,7 +71,7 @@ S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash,
            if (svp && (sv = *svp) != (SV*)&PL_sv_undef) {
                DEBUG_o( Perl_deb(aTHX_ "Using cached ISA %s for package %s\n",
                                  name, hvname) );
-               return sv;
+               return (sv == &PL_sv_yes);
            }
        }
        else {
@@ -114,16 +114,15 @@ S_isa_lookup(pTHX_ HV *stash, const char *name, HV* name_stash,
                                    sv, hvname);
                    continue;
                }
-               if (&PL_sv_yes == isa_lookup(basestash, name, name_stash, 
-                                             len, level + 1)) {
+               if (isa_lookup(basestash, name, name_stash, len, level + 1)) {
                    (void)hv_store(hv,name,len,&PL_sv_yes,0);
-                   return &PL_sv_yes;
+                   return TRUE;
                }
            }
            (void)hv_store(hv,name,len,&PL_sv_no,0);
        }
     }
-    return &PL_sv_no;
+    return FALSE;
 }
 
 /*
@@ -160,7 +159,7 @@ Perl_sv_derived_from(pTHX_ SV *sv, const char *name)
 
     if (stash) {
        HV * const name_stash = gv_stashpv(name, FALSE);
-       return isa_lookup(stash, name, name_stash, strlen(name), 0) == &PL_sv_yes;
+       return isa_lookup(stash, name, name_stash, strlen(name), 0);
     }
     else
        return FALSE;
@@ -207,7 +206,7 @@ void
 Perl_boot_core_UNIVERSAL(pTHX)
 {
     dVAR;
-    const char file[] = __FILE__;
+    static const char file[] = __FILE__;
 
     newXS("UNIVERSAL::isa",             XS_UNIVERSAL_isa,         file);
     newXS("UNIVERSAL::can",             XS_UNIVERSAL_can,         file);
@@ -342,7 +341,7 @@ XS(XS_UNIVERSAL_VERSION)
         pkg = gv_stashsv(ST(0), FALSE);
     }
 
-    gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : Null(GV**);
+    gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
 
     if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
         SV * const nsv = sv_newmortal();
@@ -819,6 +818,7 @@ XS(XS_Internals_hv_clear_placehold)
 
 XS(XS_Regexp_DESTROY)
 {
+    PERL_UNUSED_CONTEXT;
     PERL_UNUSED_ARG(cv);
 }