Eliminate some newSV(0)s by merging the SV allocation with first modification.

diff --git a/op.c b/op.c
index da0ad2c..f667164 100644 (file)
--- a/op.c
+++ b/op.c
@@ -5920,15 +5920,14 @@ Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block)
 
     if (has_name) {
        if (PERLDB_SUBLINE && PL_curstash != PL_debstash) {
-           SV * const sv = newSV(0);
            SV * const tmpstr = sv_newmortal();
            GV * const db_postponed = gv_fetchpvs("DB::postponed",
                                                  GV_ADDMULTI, SVt_PVHV);
            HV *hv;
-
-           Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld",
-                          CopFILE(PL_curcop),
-                          (long)PL_subline, (long)CopLINE(PL_curcop));
+           SV * const sv = Perl_newSVpvf(aTHX_ "%s:%ld-%ld",
+                                         CopFILE(PL_curcop),
+                                         (long)PL_subline,
+                                         (long)CopLINE(PL_curcop));
            gv_efullname3(tmpstr, gv, NULL);
            (void)hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr),
                    SvCUR(tmpstr), sv, 0);

diff --git a/toke.c b/toke.c
index a5d5429..8a4af48 100644 (file)
--- a/toke.c
+++ b/toke.c
@@ -13083,13 +13083,12 @@ Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp)
                Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number");
            }
 
-           sv = newSV(0);
            if (overflowed) {
                if (n > 4294967295.0)
                    Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE),
                                   "%s number > %s non-portable",
                                   Base, max);
-               sv_setnv(sv, n);
+               sv = newSVnv(n);
            }
            else {
 #if UVSIZE > 4
@@ -13098,7 +13097,7 @@ Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp)
                                   "%s number > %s non-portable",
                                   Base, max);
 #endif
-               sv_setuv(sv, u);
+               sv = newSVuv(u);
            }
            if (just_zero && (PL_hints & HINT_NEW_INTEGER))
                sv = new_constant(start, s - start, "integer",
@@ -13229,9 +13228,6 @@ Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp)
        }
 
 
-       /* make an sv from the string */
-       sv = newSV(0);
-
        /*
            We try to do an integer conversion first if no characters
            indicating "float" have been found.
@@ -13243,12 +13239,12 @@ Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp)
 
             if (flags == IS_NUMBER_IN_UV) {
               if (uv <= IV_MAX)
-               sv_setiv(sv, uv); /* Prefer IVs over UVs. */
+               sv = newSViv(uv); /* Prefer IVs over UVs. */
               else
-               sv_setuv(sv, uv);
+               sv = newSVuv(uv);
             } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) {
               if (uv <= (UV) IV_MIN)
-                sv_setiv(sv, -(IV)uv);
+                sv = newSViv(-(IV)uv);
               else
                floatit = TRUE;
             } else
@@ -13258,7 +13254,7 @@ Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp)
            /* terminate the string */
            *d = '\0';
            nv = Atof(PL_tokenbuf);
-           sv_setnv(sv, nv);
+           sv = newSVnv(nv);
        }
 
        if ( floatit