make ~$x give warning is $x isn't initialised.

[perl5.git] / sv.c

diff --git a/sv.c b/sv.c
index dd15758..f4b3696 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -1,7 +1,7 @@
 /*    sv.c
  *
  *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- *    2000, 2001, 2002, 2003, by Larry Wall and others
+ *    2000, 2001, 2002, 2003, 2004, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -3566,6 +3566,12 @@ void
 Perl_sv_utf8_encode(pTHX_ register SV *sv)
 {
     (void) sv_utf8_upgrade(sv);
+    if (SvIsCOW(sv)) {
+        sv_force_normal_flags(sv, 0);
+    }
+    if (SvREADONLY(sv)) {
+       Perl_croak(aTHX_ PL_no_modify);
+    }
     SvUTF8_off(sv);
 }
 
@@ -4227,7 +4233,7 @@ Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr)
     }
     else
        new_SV(dstr);
-    SvUPGRADE (dstr, SVt_PVIV);
+    (void)SvUPGRADE (dstr, SVt_PVIV);
 
     assert (SvPOK(sstr));
     assert (SvPOKp(sstr));
@@ -4250,7 +4256,7 @@ Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr)
        SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr));
     } else {
        assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS);
-       SvUPGRADE (sstr, SVt_PVIV);
+       (void)SvUPGRADE (sstr, SVt_PVIV);
        SvREADONLY_on(sstr);
        SvFAKE_on(sstr);
        DEBUG_C(PerlIO_printf(Perl_debug_log,
@@ -9709,7 +9715,7 @@ Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param)
     New(0, ret->offsets, 2*len+1, U32);
     Copy(r->offsets, ret->offsets, 2*len+1, U32);
 
-    ret->precomp        = SAVEPV(r->precomp);
+    ret->precomp        = SAVEPVN(r->precomp, r->prelen);
     ret->refcnt         = r->refcnt;
     ret->minlen         = r->minlen;
     ret->prelen         = r->prelen;
@@ -9721,7 +9727,7 @@ Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param)
     ret->sublen         = r->sublen;
 
     if (RX_MATCH_COPIED(ret))
-       ret->subbeg  = SAVEPV(r->subbeg);
+       ret->subbeg  = SAVEPVN(r->subbeg, r->sublen);
     else
        ret->subbeg = Nullch;
 #ifdef PERL_COPY_ON_WRITE