X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=doop.c;h=560dbe2dfc148a659fb14eaffb68317c7c8bac56;hb=396e383874c849ebbe1b4f03937ba654b9bfb11c;hp=2b504a1b696baeb65085f04af70aa2c164a2371d;hpb=14befaf4eaa6e79d87aacb106e0b701e925483ee;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/doop.c b/doop.c
index 2b504a1..560dbe2 100644
--- a/doop.c
+++ b/doop.c
@@ -141,7 +141,7 @@ S_do_trans_complex(pTHX_ SV *sv)/* SPC - NOT OK */
     I32 grows = PL_op->op_private & OPpTRANS_GROWS;
     I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
     I32 del = PL_op->op_private & OPpTRANS_DELETE;
-    STRLEN len, rlen;
+    STRLEN len, rlen = 0;
     short *tbl;
     I32 ch;
 
@@ -308,7 +308,7 @@ S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
     SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
     UV none = svp ? SvUV(*svp) : 0x7fffffff;
     UV extra = none + 1;
-    UV final;
+    UV final = 0;
     UV uv;
     I32 isutf8;
     U8 hibit = 0;
@@ -386,9 +386,6 @@ S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
     }
     SvSETMAGIC(sv);
     SvUTF8_on(sv);
-    /* Downgrading just 'cos it will is suspect - NI-S */
-    if (!isutf8 && !(PL_hints & HINT_UTF8))
-	sv_utf8_downgrade(sv, TRUE);
 
     return matches;
 }
@@ -397,7 +394,7 @@ STATIC I32
 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
 {
     U8 *s;
-    U8 *start, *send;
+    U8 *start = 0, *send;
     I32 matches = 0;
     STRLEN len;
 
@@ -448,7 +445,7 @@ S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
     SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
     UV none = svp ? SvUV(*svp) : 0x7fffffff;
     UV extra = none + 1;
-    UV final;
+    UV final = 0;
     bool havefinal = FALSE;
     UV uv;
     STRLEN len;
@@ -590,8 +587,6 @@ S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
 	SvCUR_set(sv, d - dstart);
     }
     SvUTF8_on(sv);
-    if (!isutf8 && !(PL_hints & HINT_UTF8))
-	sv_utf8_downgrade(sv, TRUE);
     SvSETMAGIC(sv);
 
     return matches;
@@ -646,9 +641,11 @@ Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **s
     register I32 items = sp - mark;
     register STRLEN len;
     STRLEN delimlen;
-    register char *delim = SvPV(del, delimlen);
     STRLEN tmplen;
 
+    (void) SvPV(del, delimlen); /* stringify and get the delimlen */
+    /* SvCUR assumes it's SvPOK() and woe betide you if it's not. */
+
     mark++;
     len = (items > 0 ? (delimlen * (items - 1) ) : 0);
     (void)SvUPGRADE(sv, SVt_PV);
@@ -667,14 +664,16 @@ Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **s
 	++mark;
     }
 
+    sv_setpv(sv, "");
+    if (PL_tainting && SvMAGICAL(sv))
+	SvTAINTED_off(sv);
+
     if (items-- > 0) {
-	sv_setpv(sv, "");
 	if (*mark)
 	    sv_catsv(sv, *mark);
 	mark++;
     }
-    else
-	sv_setpv(sv,"");
+
     if (delimlen) {
 	for (; items > 0; items--,mark++) {
 	    sv_catsv(sv,del);
@@ -1080,7 +1079,7 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
     char *rsave;
     bool left_utf = DO_UTF8(left);
     bool right_utf = DO_UTF8(right);
-    I32 needlen;
+    I32 needlen = 0;
 
     if (left_utf && !right_utf)
 	sv_utf8_upgrade(right);