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

diff --git a/gv.c b/gv.c
index e4951a0..da50eac 100644 (file)
--- a/gv.c
+++ b/gv.c
@@ -128,13 +128,13 @@ Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi)
        CvGV(GvCV(gv)) = gv;
        CvFILE_set_from_cop(GvCV(gv), PL_curcop);
        CvSTASH(GvCV(gv)) = PL_curstash;
-#ifdef USE_THREADS
+#ifdef USE_5005THREADS
        CvOWNER(GvCV(gv)) = 0;
        if (!CvMUTEXP(GvCV(gv))) {
            New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex);
            MUTEX_INIT(CvMUTEXP(GvCV(gv)));
        }
-#endif /* USE_THREADS */
+#endif /* USE_5005THREADS */
        if (proto) {
            sv_setpv((SV*)GvCV(gv), proto);
            Safefree(proto);
@@ -439,7 +439,7 @@ Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method)
          "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
             HvNAME(stash), (int)len, name);
 
-#ifndef USE_THREADS
+#ifndef USE_5005THREADS
     if (CvXSUB(cv)) {
         /* rather than lookup/init $AUTOLOAD here
          * only to have the XSUB do another lookup for $AUTOLOAD
@@ -463,14 +463,14 @@ Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method)
     vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
     ENTER;
 
-#ifdef USE_THREADS
+#ifdef USE_5005THREADS
     sv_lock((SV *)varstash);
 #endif
     if (!isGV(vargv))
        gv_init(vargv, varstash, autoload, autolen, FALSE);
     LEAVE;
     varsv = GvSV(vargv);
-#ifdef USE_THREADS
+#ifdef USE_5005THREADS
     sv_lock(varsv);
 #endif
     sv_setpv(varsv, HvNAME(stash));
@@ -656,7 +656,7 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
                  strEQ(name, "ARGVOUT")))
                    global = TRUE;
            }
-           else if (*name == '_' && !name[1])
+           else if (*name == '_' && (!name[1] || strEQ(name,"__ANON__")))
                global = TRUE;
 
            if (global)
@@ -814,20 +814,16 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
        break;
 
     case '&':
-       if (len > 1)
-           break;
-       PL_sawampersand = TRUE;
-       goto ro_magicalize;
-
     case '`':
-       if (len > 1)
-           break;
-       PL_sawampersand = TRUE;
-       goto ro_magicalize;
-
     case '\'':
-       if (len > 1)
-           break;
+       if (
+           len > 1 ||
+           sv_type == SVt_PVAV ||
+           sv_type == SVt_PVHV ||
+           sv_type == SVt_PVCV ||
+           sv_type == SVt_PVFM ||
+           sv_type == SVt_PVIO
+       ) { break; }
        PL_sawampersand = TRUE;
        goto ro_magicalize;
 
@@ -897,7 +893,6 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
     case '\011':       /* $^I, NOT \t in EBCDIC */
     case '\016':        /* $^N */
     case '\020':       /* $^P */
-    case '\024':       /* $^T */
        if (len > 1)
            break;
        goto magicalize;
@@ -914,6 +909,13 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
        if (len > 1)
            break;
        goto ro_magicalize;
+    case '\024':       /* $^T, ${^TAINT} */
+        if (len == 1)
+            goto magicalize;
+        else if (strEQ(name, "\024AINT"))
+            goto ro_magicalize;
+        else
+            break;
     case '\027':       /* $^W & $^WARNING_BITS */
        if (len > 1 && strNE(name, "\027ARNING_BITS")
            && strNE(name, "\027IDE_SYSTEM_CALLS"))
@@ -938,6 +940,17 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type)
     case '7':
     case '8':
     case '9':
+       /* ensures variable is only digits */
+       /* ${"1foo"} fails this test (and is thus writeable) */
+       /* added by japhy, but borrowed from is_gv_magical */
+
+       if (len > 1) {
+           const char *end = name + len;
+           while (--end > name) {
+               if (!isDIGIT(*end)) return gv;
+           }
+       }
+
       ro_magicalize:
        SvREADONLY_on(GvSV(gv));
       magicalize:
@@ -1777,11 +1790,14 @@ Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags)
     case '\016':   /* $^N */
     case '\020':   /* $^P */
     case '\023':   /* $^S */
-    case '\024':   /* $^T */
     case '\026':   /* $^V */
        if (len == 1)
            goto yes;
        break;
+    case '\024':   /* $^T, ${^TAINT} */
+        if (len == 1 || strEQ(name, "\024AINT"))
+            goto yes;
+        break;
     case '1':
     case '2':
     case '3':