Eliminate some uses of sv_setpv() where we already know the length.

Donate the prototype buffer to the CV in Perl_gv_init(), rather than
setting a copy, and immediately free()ing the original.

p4raw-id: //depot/perl@32136

2 files changed, 15 insertions, 13 deletions

diff --git a/gv.c b/gv.c
index d34d04328c..24dabf64e5 100644
--- a/gv.c
+++ b/gv.c
@@ -214,6 +214,7 @@ Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi)
     const U32 old_type = SvTYPE(gv);
     const bool doproto = old_type > SVt_NULL;
     const char * const proto = (doproto && SvPOK(gv)) ? SvPVX_const(gv) : NULL;
+    const STRLEN protolen = proto ? SvCUR(gv) : 0;
     SV *const has_constant = doproto && SvROK(gv) ? SvRV(gv) : NULL;
     const U32 exported_constant = has_constant ? SvPCS_IMPORTED(gv) : 0;
 
@@ -280,8 +281,8 @@ Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi)
 	CvFILE_set_from_cop(GvCV(gv), PL_curcop);
 	CvSTASH(GvCV(gv)) = PL_curstash;
 	if (proto) {
-	    sv_setpv((SV*)GvCV(gv), proto);
-	    Safefree(proto);
+	    sv_usepvn_flags((SV*)GvCV(gv), proto, protolen,
+			    SV_HAS_TRAILING_NUL);
 	}
     }
 }
diff --git a/toke.c b/toke.c
index f8d207c292..848739702b 100644
--- a/toke.c
+++ b/toke.c
@@ -3694,10 +3694,10 @@ Perl_yylex(pTHX)
 		    if (PL_madskills)
 			PL_faketokens = 1;
 #endif
-		    sv_setpv(PL_linestr,
-			     (const char *)
-			     (PL_minus_p
-			      ? ";}continue{print;}" : ";}"));
+		    if (PL_minus_p)
+			sv_setpvs(PL_linestr, ";}continue{print;}");
+		    else
+			sv_setpvs(PL_linestr, ";}");
 		    PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr);
 		    PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
 		    PL_last_lop = PL_last_uni = NULL;
@@ -5534,10 +5534,10 @@ Perl_yylex(pTHX)
 			while (*proto == ';')
 			    proto++;
 			if (*proto == '&' && *s == '{') {
-			    sv_setpv(PL_subname,
-				     (const char *)
-				     (PL_curstash ?
-				      "__ANON__" : "__ANON__::__ANON__"));
+			    if (PL_curstash)
+				sv_setpvs(PL_subname, "__ANON__");
+			    else
+				sv_setpvs(PL_subname, "__ANON__::__ANON__");
 			    PREBLOCK(LSTOPSUB);
 			}
 		    }
@@ -6758,9 +6758,10 @@ Perl_yylex(pTHX)
 		}
 #endif
 		if (!have_name) {
-		    sv_setpv(PL_subname,
-			     (const char *)
-			     (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"));
+		    if (PL_curstash)
+			sv_setpvs(PL_subname, "__ANON__");
+		    else
+			sv_setpvs(PL_subname, "__ANON__::__ANON__");
 		    TOKEN(ANONSUB);
 		}
 #ifndef PERL_MAD