X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/a6e20a404b42cad25eb97280fa2bcacffda64cd6..e4769da7e4ba2947901539be526b741c6157838a:/doop.c

diff --git a/doop.c b/doop.c
index 8d23a31..c23093c 100644
--- a/doop.c
+++ b/doop.c
@@ -36,7 +36,7 @@ S_do_trans_simple(pTHX_ SV *sv)
     const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
     STRLEN len;
 
-    const short *tbl = (short*)cPVOP->op_pv;
+    const short * const tbl = (short*)cPVOP->op_pv;
     if (!tbl)
 	Perl_croak(aTHX_ "panic: do_trans_simple line %d",__LINE__);
 
@@ -49,10 +49,9 @@ S_do_trans_simple(pTHX_ SV *sv)
 	    const I32 ch = tbl[*s];
 	    if (ch >= 0) {
 		matches++;
-		*s++ = (U8)ch;
+		*s = (U8)ch;
 	    }
-	    else
-		s++;
+	    s++;
 	}
 	SvSETMAGIC(sv);
         return matches;
@@ -60,7 +59,7 @@ S_do_trans_simple(pTHX_ SV *sv)
 
     /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
     if (grows)
-	New(0, d, len*2+1, U8);
+	Newx(d, len*2+1, U8);
     else
 	d = s;
     dstart = d;
@@ -190,7 +189,7 @@ S_do_trans_complex(pTHX_ SV *sv)
     }
     else { /* isutf8 */
 	if (grows)
-	    New(0, d, len*2+1, U8);
+	    Newx(d, len*2+1, U8);
 	else
 	    d = s;
 	dstart = d;
@@ -306,20 +305,20 @@ S_do_trans_simple_utf8(pTHX_ SV *sv)
     const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
     STRLEN len;
 
-    SV* rv = (SV*)cSVOP->op_sv;
-    HV* hv = (HV*)SvRV(rv);
-    SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
+    SV* const  rv = (SV*)cSVOP->op_sv;
+    HV* const  hv = (HV*)SvRV(rv);
+    SV* const * svp = hv_fetch(hv, "NONE", 4, FALSE);
     const UV none = svp ? SvUV(*svp) : 0x7fffffff;
     const UV extra = none + 1;
     UV final = 0;
-    UV uv;
     I32 isutf8;
     U8 hibit = 0;
 
     s = (U8*)SvPV(sv, len);
     isutf8 = SvUTF8(sv);
     if (!isutf8) {
-	const U8 *t = s, *e = s + len;
+	const U8 *t = s;
+	const U8 * const e = s + len;
 	while (t < e) {
 	    const U8 ch = *t++;
 	    if ((hibit = !NATIVE_IS_INVARIANT(ch)))
@@ -337,7 +336,7 @@ S_do_trans_simple_utf8(pTHX_ SV *sv)
 
     if (grows) {
 	/* d needs to be bigger than s, in case e.g. upgrading is required */
-	New(0, d, len * 3 + UTF8_MAXBYTES, U8);
+	Newx(d, len * 3 + UTF8_MAXBYTES, U8);
 	dend = d + len * 3;
 	dstart = d;
     }
@@ -347,7 +346,8 @@ S_do_trans_simple_utf8(pTHX_ SV *sv)
     }
 
     while (s < send) {
-	if ((uv = swash_fetch(rv, s, TRUE)) < none) {
+	const UV uv = swash_fetch(rv, s, TRUE);
+	if (uv < none) {
 	    s += UTF8SKIP(s);
 	    matches++;
 	    d = uvuni_to_utf8(d, uv);
@@ -400,9 +400,9 @@ S_do_trans_count_utf8(pTHX_ SV *sv)
     I32 matches = 0;
     STRLEN len;
 
-    SV* rv = (SV*)cSVOP->op_sv;
-    HV* hv = (HV*)SvRV(rv);
-    SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
+    SV* const rv = (SV*)cSVOP->op_sv;
+    HV* const hv = (HV*)SvRV(rv);
+    SV* const * const svp = hv_fetch(hv, "NONE", 4, FALSE);
     const UV none = svp ? SvUV(*svp) : 0x7fffffff;
     const UV extra = none + 1;
     U8 hibit = 0;
@@ -410,7 +410,7 @@ S_do_trans_count_utf8(pTHX_ SV *sv)
     s = (const U8*)SvPV_const(sv, len);
     if (!SvUTF8(sv)) {
 	const U8 *t = s;
-	const U8 *e = s + len;
+	const U8 * const e = s + len;
 	while (t < e) {
 	    const U8 ch = *t++;
 	    if ((hibit = !NATIVE_IS_INVARIANT(ch)))
@@ -422,8 +422,8 @@ S_do_trans_count_utf8(pTHX_ SV *sv)
     send = s + len;
 
     while (s < send) {
-	UV uv;
-	if ((uv = swash_fetch(rv, s, TRUE)) < none || uv == extra)
+	const UV uv = swash_fetch(rv, s, TRUE);
+	if (uv < none || uv == extra)
 	    matches++;
 	s += UTF8SKIP(s);
     }
@@ -442,9 +442,9 @@ S_do_trans_complex_utf8(pTHX_ SV *sv)
     const I32 squash   = PL_op->op_private & OPpTRANS_SQUASH;
     const I32 del      = PL_op->op_private & OPpTRANS_DELETE;
     const I32 grows    = PL_op->op_private & OPpTRANS_GROWS;
-    SV* rv = (SV*)cSVOP->op_sv;
-    HV* hv = (HV*)SvRV(rv);
-    SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
+    SV * const rv = (SV*)cSVOP->op_sv;
+    HV * const hv = (HV*)SvRV(rv);
+    SV * const *svp = hv_fetch(hv, "NONE", 4, FALSE);
     const UV none = svp ? SvUV(*svp) : 0x7fffffff;
     const UV extra = none + 1;
     UV final = 0;
@@ -456,7 +456,8 @@ S_do_trans_complex_utf8(pTHX_ SV *sv)
     U8 *s = (U8*)SvPV(sv, len);
     const I32 isutf8 = SvUTF8(sv);
     if (!isutf8) {
-	const U8 *t = s, *e = s + len;
+	const U8 *t = s;
+	const U8 * const e = s + len;
 	while (t < e) {
 	    const U8 ch = *t++;
 	    if ((hibit = !NATIVE_IS_INVARIANT(ch)))
@@ -476,7 +477,7 @@ S_do_trans_complex_utf8(pTHX_ SV *sv)
 
     if (grows) {
 	/* d needs to be bigger than s, in case e.g. upgrading is required */
-	New(0, d, len * 3 + UTF8_MAXBYTES, U8);
+	Newx(d, len * 3 + UTF8_MAXBYTES, U8);
 	dend = d + len * 3;
 	dstart = d;
     }
@@ -643,7 +644,7 @@ Perl_do_trans(pTHX_ SV *sv)
 void
 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
 {
-    SV **oldmark = mark;
+    SV ** const oldmark = mark;
     register I32 items = sp - mark;
     register STRLEN len;
     STRLEN delimlen;
@@ -700,7 +701,7 @@ void
 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
 {
     STRLEN patlen;
-    const char *pat = SvPV_const(*sarg, patlen);
+    const char * const pat = SvPV_const(*sarg, patlen);
     bool do_taint = FALSE;
 
     SvUTF8_off(sv);
@@ -854,7 +855,6 @@ Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
 void
 Perl_do_vecset(pTHX_ SV *sv)
 {
-    SV *targ = LvTARG(sv);
     register I32 offset;
     register I32 size;
     register unsigned char *s;
@@ -862,6 +862,7 @@ Perl_do_vecset(pTHX_ SV *sv)
     I32 mask;
     STRLEN targlen;
     STRLEN len;
+    SV * const targ = LvTARG(sv);
 
     if (!targ)
 	return;
@@ -940,7 +941,7 @@ Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
 
     if (SvTYPE(sv) == SVt_PVAV) {
 	register I32 i;
-	AV* av = (AV*)sv;
+	AV* const av = (AV*)sv;
 	const I32 max = AvFILL(av);
 
 	for (i = 0; i <= max; i++) {
@@ -951,7 +952,7 @@ Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
         return;
     }
     else if (SvTYPE(sv) == SVt_PVHV) {
-        HV* hv = (HV*)sv;
+	HV* const hv = (HV*)sv;
 	HE* entry;
         (void)hv_iterinit(hv);
         while ((entry = hv_iternext(hv)))
@@ -971,12 +972,12 @@ Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
 	s = SvPV_force(sv, len);
     if (DO_UTF8(sv)) {
 	if (s && len) {
-	    char *send = s + len;
-	    char *start = s;
+	    char * const send = s + len;
+	    char * const start = s;
 	    s = send - 1;
 	    while (s > start && UTF8_IS_CONTINUATION(*s))
 		s--;
-	    if (utf8_to_uvchr((U8*)s, 0)) {
+	    if (is_utf8_string((U8*)s, send - s)) {
 		sv_setpvn(astr, s, send - s);
 		*s = '\0';
 		SvCUR_set(sv, s - start);
@@ -1016,7 +1017,7 @@ Perl_do_chomp(pTHX_ register SV *sv)
     count = 0;
     if (SvTYPE(sv) == SVt_PVAV) {
 	register I32 i;
-	AV* av = (AV*)sv;
+	AV* const av = (AV*)sv;
 	const I32 max = AvFILL(av);
 
 	for (i = 0; i <= max; i++) {
@@ -1027,7 +1028,7 @@ Perl_do_chomp(pTHX_ register SV *sv)
         return count;
     }
     else if (SvTYPE(sv) == SVt_PVHV) {
-        HV* hv = (HV*)sv;
+	HV* const hv = (HV*)sv;
 	HE* entry;
         (void)hv_iterinit(hv);
         while ((entry = hv_iternext(hv)))
@@ -1169,12 +1170,11 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
     lensave = len;
     if ((left_utf || right_utf) && (sv == left || sv == right)) {
 	needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
-	Newz(801, dc, needlen + 1, char);
+	Newxz(dc, needlen + 1, char);
     }
     else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
-	STRLEN n_a;
-	dc = SvPV_force_nomg(sv, n_a);
-	if (SvCUR(sv) < (STRLEN)len) {
+	dc = SvPV_force_nomg_nolen(sv);
+	if (SvLEN(sv) < (STRLEN)(len + 1)) {
 	    dc = SvGROW(sv, (STRLEN)(len + 1));
 	    (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
 	}
@@ -1184,7 +1184,7 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
     else {
 	needlen = ((optype == OP_BIT_AND)
 		    ? len : (leftlen > rightlen ? leftlen : rightlen));
-	Newz(801, dc, needlen + 1, char);
+	Newxz(dc, needlen + 1, char);
 	(void)sv_usepvn(sv, dc, needlen);
 	dc = SvPVX(sv);		/* sv_usepvn() calls Renew() */
     }
@@ -1192,7 +1192,7 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
     (void)SvPOK_only(sv);
     if (left_utf || right_utf) {
 	UV duc, luc, ruc;
-	char *dcsave = dc;
+	char * const dcsave = dc;
 	STRLEN lulen = leftlen;
 	STRLEN rulen = rightlen;
 	STRLEN ulen;
@@ -1303,6 +1303,7 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
 	case OP_BIT_AND:
 	    while (len--)
 		*dc++ = *lc++ & *rc++;
+	    *dc = '\0';
 	    break;
 	case OP_BIT_XOR:
 	    while (len--)
@@ -1330,7 +1331,7 @@ OP *
 Perl_do_kv(pTHX)
 {
     dSP;
-    HV *hv = (HV*)POPs;
+    HV * const hv = (HV*)POPs;
     HV *keys;
     register HE *entry;
     const I32 gimme = GIMME_V;
@@ -1389,7 +1390,7 @@ Perl_do_kv(pTHX)
     while ((entry = hv_iternext(keys))) {
 	SPAGAIN;
 	if (dokeys) {
-	    SV* sv = hv_iterkeysv(entry);
+	    SV* const sv = hv_iterkeysv(entry);
 	    XPUSHs(sv);	/* won't clobber stack_sp */
 	}
 	if (dovalues) {
@@ -1398,7 +1399,7 @@ Perl_do_kv(pTHX)
 	    tmpstr = hv_iterval(hv,entry);
 	    DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
 			    (unsigned long)HeHASH(entry),
-			    HvMAX(keys)+1,
+			    (int)HvMAX(keys)+1,
 			    (unsigned long)(HeHASH(entry) & HvMAX(keys))));
 	    SPAGAIN;
 	    XPUSHs(tmpstr);