Use UTF8SKIP(), from Simon Cozens.

[perl5.git] / mg.c

diff --git a/mg.c b/mg.c
index b1049c5..bec0a82 100644 (file)
--- a/mg.c
+++ b/mg.c
@@ -292,7 +292,8 @@ Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
     for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
        if (isUPPER(mg->mg_type)) {
            sv_magic(nsv,
-                    mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
+                    mg->mg_type == 'P' ? SvTIED_obj(sv, mg) :
+                    (mg->mg_type == 'D' && mg->mg_obj) ? sv : mg->mg_obj,
                     toLOWER(mg->mg_type), key, klen);
            count++;
        }
@@ -379,6 +380,15 @@ Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
     return 0;
 }
 
+int
+Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
+{
+    dTHR;
+    Perl_croak(aTHX_ PL_no_modify);
+    /* NOT REACHED */
+    return 0;
+}
+
 U32
 Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
 {
@@ -565,9 +575,7 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
            if (PL_lex_state != LEX_NOTPARSING)
                (void)SvOK_off(sv);
            else if (PL_in_eval)
-               sv_setiv(sv, 1);
-           else
-               sv_setiv(sv, 0);
+               sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE));
        }
        break;
     case '\024':               /* ^T */
@@ -614,6 +622,9 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
            {
                i = t1 - s1;
                s = rx->subbeg + s1;
+               if (!rx->subbeg)
+                   break;
+
              getrx:
                if (i >= 0) {
                    bool was_tainted;
@@ -903,7 +914,7 @@ Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
 int
 Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
 {
-#if defined(VMS)
+#if defined(VMS) || defined(EPOC)
     Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
 #else
 #   ifdef PERL_IMPLICIT_SYS
@@ -1274,8 +1285,6 @@ Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
                     atoi(MgPV(mg,n_a)), FALSE);
     if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp))))
        o->op_private = i;
-    else if (ckWARN_d(WARN_INTERNAL))
-       Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n");
     return 0;
 }
 
@@ -1416,6 +1425,8 @@ Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
     if (rem + offs > len)
        rem = len - offs;
     sv_setpvn(sv, tmps + offs, (STRLEN)rem);
+    if (DO_UTF8(lsv))
+        SvUTF8_on(sv);
     return 0;
 }
 
@@ -1737,18 +1748,21 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
                    PL_compiling.cop_warnings = pWARN_NONE;
                    break;
                }
-                if (isWARN_on(sv, WARN_ALL) && !isWARNf_on(sv, WARN_ALL)) {
-                   PL_compiling.cop_warnings = pWARN_ALL;
-                   PL_dowarn |= G_WARN_ONCE ;
-               }       
-               else {
+               {
                    STRLEN len, i;
                    int accumulate = 0 ;
+                   int any_fatals = 0 ;
                    char * ptr = (char*)SvPV(sv, len) ;
-                   for (i = 0 ; i < len ; ++i) 
-                       accumulate += ptr[i] ;
+                   for (i = 0 ; i < len ; ++i) {
+                       accumulate |= ptr[i] ;
+                       any_fatals |= (ptr[i] & 0xAA) ;
+                   }
                    if (!accumulate)
                        PL_compiling.cop_warnings = pWARN_NONE;
+                   else if (isWARN_on(sv, WARN_ALL) && !any_fatals) {
+                       PL_compiling.cop_warnings = pWARN_ALL;
+                       PL_dowarn |= G_WARN_ONCE ;
+                   }   
                     else {
                        if (specialWARN(PL_compiling.cop_warnings))
                            PL_compiling.cop_warnings = newSVsv(sv) ;
@@ -1757,6 +1771,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
                        if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
                            PL_dowarn |= G_WARN_ONCE ;
                    }
+
                }
            }
        }
@@ -1996,6 +2011,30 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
        break;
 #ifndef MACOS_TRADITIONAL
     case '0':
+#ifdef HAS_SETPROCTITLE
+       /* The BSDs don't show the argv[] in ps(1) output, they
+        * show a string from the process struct and provide
+        * the setproctitle() routine to manipulate that. */
+       {
+           s = SvPV(sv, len);
+#   if __FreeBSD_version >= 410001
+           /* The leading "-" removes the "perl: " prefix,
+            * but not the "(perl) suffix from the ps(1)
+            * output, because that's what ps(1) shows if the
+            * argv[] is modified. */
+           setproctitle("-%s", s, len + 1);
+#   else       /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
+           /* This doesn't really work if you assume that
+            * $0 = 'foobar'; will wipe out 'perl' from the $0
+            * because in ps(1) output the result will be like
+            * sprintf("perl: %s (perl)", s)
+            * I guess this is a security feature:
+            * one (a user process) cannot get rid of the original name.
+            * --jhi */
+           setproctitle("%s", s);
+#   endif
+       }
+#endif
        if (!PL_origalen) {
            s = PL_origargv[0];
            s += strlen(s);