--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/perl-5.22.2/doop.c	Sat May 14 14:54:38 2016 +0000
@@ -0,0 +1,1280 @@
+/*    doop.c
+ *
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ *    2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009 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.
+ *
+ */
+
+/*
+ *  'So that was the job I felt I had to do when I started,' thought Sam.
+ *
+ *     [p.934 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
+ */
+
+/* This file contains some common functions needed to carry out certain
+ * ops. For example, both pp_sprintf() and pp_prtf() call the function
+ * do_printf() found in this file.
+ */
+
+#include "EXTERN.h"
+#define PERL_IN_DOOP_C
+#include "perl.h"
+
+#ifndef PERL_MICRO
+#include <signal.h>
+#endif
+
+STATIC I32
+S_do_trans_simple(pTHX_ SV * const sv)
+{
+    I32 matches = 0;
+    STRLEN len;
+    U8 *s = (U8*)SvPV_nomg(sv,len);
+    U8 * const send = s+len;
+    const short * const tbl = (short*)cPVOP->op_pv;
+
+    PERL_ARGS_ASSERT_DO_TRANS_SIMPLE;
+
+    if (!tbl)
+	Perl_croak(aTHX_ "panic: do_trans_simple line %d",__LINE__);
+
+    /* First, take care of non-UTF-8 input strings, because they're easy */
+    if (!SvUTF8(sv)) {
+	while (s < send) {
+	    const I32 ch = tbl[*s];
+	    if (ch >= 0) {
+		matches++;
+		*s = (U8)ch;
+	    }
+	    s++;
+	}
+	SvSETMAGIC(sv);
+    }
+    else {
+	const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
+	U8 *d;
+	U8 *dstart;
+
+	/* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
+	if (grows)
+	    Newx(d, len*2+1, U8);
+	else
+	    d = s;
+	dstart = d;
+	while (s < send) {
+	    STRLEN ulen;
+	    I32 ch;
+
+	    /* Need to check this, otherwise 128..255 won't match */
+	    const UV c = utf8n_to_uvchr(s, send - s, &ulen, UTF8_ALLOW_DEFAULT);
+	    if (c < 0x100 && (ch = tbl[c]) >= 0) {
+		matches++;
+		d = uvchr_to_utf8(d, ch);
+		s += ulen;
+	    }
+	    else { /* No match -> copy */
+		Move(s, d, ulen, U8);
+		d += ulen;
+		s += ulen;
+	    }
+	}
+	if (grows) {
+	    sv_setpvn(sv, (char*)dstart, d - dstart);
+	    Safefree(dstart);
+	}
+	else {
+	    *d = '\0';
+	    SvCUR_set(sv, d - dstart);
+	}
+	SvUTF8_on(sv);
+	SvSETMAGIC(sv);
+    }
+    return matches;
+}
+
+STATIC I32
+S_do_trans_count(pTHX_ SV * const sv)
+{
+    STRLEN len;
+    const U8 *s = (const U8*)SvPV_nomg_const(sv, len);
+    const U8 * const send = s + len;
+    I32 matches = 0;
+    const short * const tbl = (short*)cPVOP->op_pv;
+
+    PERL_ARGS_ASSERT_DO_TRANS_COUNT;
+
+    if (!tbl)
+	Perl_croak(aTHX_ "panic: do_trans_count line %d",__LINE__);
+
+    if (!SvUTF8(sv)) {
+	while (s < send) {
+            if (tbl[*s++] >= 0)
+                matches++;
+	}
+    }
+    else {
+	const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
+	while (s < send) {
+	    STRLEN ulen;
+	    const UV c = utf8n_to_uvchr(s, send - s, &ulen, UTF8_ALLOW_DEFAULT);
+	    if (c < 0x100) {
+		if (tbl[c] >= 0)
+		    matches++;
+	    } else if (complement)
+		matches++;
+	    s += ulen;
+	}
+    }
+
+    return matches;
+}
+
+STATIC I32
+S_do_trans_complex(pTHX_ SV * const sv)
+{
+    STRLEN len;
+    U8 *s = (U8*)SvPV_nomg(sv, len);
+    U8 * const send = s+len;
+    I32 matches = 0;
+    const short * const tbl = (short*)cPVOP->op_pv;
+
+    PERL_ARGS_ASSERT_DO_TRANS_COMPLEX;
+
+    if (!tbl)
+	Perl_croak(aTHX_ "panic: do_trans_complex line %d",__LINE__);
+
+    if (!SvUTF8(sv)) {
+	U8 *d = s;
+	U8 * const dstart = d;
+
+	if (PL_op->op_private & OPpTRANS_SQUASH) {
+	    const U8* p = send;
+	    while (s < send) {
+		const I32 ch = tbl[*s];
+		if (ch >= 0) {
+		    *d = (U8)ch;
+		    matches++;
+		    if (p != d - 1 || *p != *d)
+			p = d++;
+		}
+		else if (ch == -1)	/* -1 is unmapped character */
+		    *d++ = *s;	
+		else if (ch == -2)	/* -2 is delete character */
+		    matches++;
+		s++;
+	    }
+	}
+	else {
+	    while (s < send) {
+		const I32 ch = tbl[*s];
+		if (ch >= 0) {
+		    matches++;
+		    *d++ = (U8)ch;
+		}
+		else if (ch == -1)	/* -1 is unmapped character */
+		    *d++ = *s;
+		else if (ch == -2)      /* -2 is delete character */
+		    matches++;
+		s++;
+	    }
+	}
+	*d = '\0';
+	SvCUR_set(sv, d - dstart);
+    }
+    else { /* is utf8 */
+	const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
+	const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
+	const I32 del = PL_op->op_private & OPpTRANS_DELETE;
+	U8 *d;
+	U8 *dstart;
+	STRLEN rlen = 0;
+
+	if (grows)
+	    Newx(d, len*2+1, U8);
+	else
+	    d = s;
+	dstart = d;
+	if (complement && !del)
+	    rlen = tbl[0x100];
+
+	if (PL_op->op_private & OPpTRANS_SQUASH) {
+	    UV pch = 0xfeedface;
+	    while (s < send) {
+		STRLEN len;
+		const UV comp = utf8n_to_uvchr(s, send - s, &len,
+					       UTF8_ALLOW_DEFAULT);
+		I32 ch;
+
+		if (comp > 0xff) {
+		    if (!complement) {
+			Move(s, d, len, U8);
+			d += len;
+		    }
+		    else {
+			matches++;
+			if (!del) {
+			    ch = (rlen == 0) ? (I32)comp :
+				(comp - 0x100 < rlen) ?
+				tbl[comp+1] : tbl[0x100+rlen];
+			    if ((UV)ch != pch) {
+				d = uvchr_to_utf8(d, ch);
+				pch = (UV)ch;
+			    }
+			    s += len;
+			    continue;
+			}
+		    }
+		}
+		else if ((ch = tbl[comp]) >= 0) {
+		    matches++;
+		    if ((UV)ch != pch) {
+		        d = uvchr_to_utf8(d, ch);
+		        pch = (UV)ch;
+		    }
+		    s += len;
+		    continue;
+		}
+		else if (ch == -1) {	/* -1 is unmapped character */
+		    Move(s, d, len, U8);
+		    d += len;
+		}
+		else if (ch == -2)      /* -2 is delete character */
+		    matches++;
+		s += len;
+		pch = 0xfeedface;
+	    }
+	}
+	else {
+	    while (s < send) {
+		STRLEN len;
+		const UV comp = utf8n_to_uvchr(s, send - s, &len,
+					       UTF8_ALLOW_DEFAULT);
+		I32 ch;
+		if (comp > 0xff) {
+		    if (!complement) {
+			Move(s, d, len, U8);
+			d += len;
+		    }
+		    else {
+			matches++;
+			if (!del) {
+			    if (comp - 0x100 < rlen)
+				d = uvchr_to_utf8(d, tbl[comp+1]);
+			    else
+				d = uvchr_to_utf8(d, tbl[0x100+rlen]);
+			}
+		    }
+		}
+		else if ((ch = tbl[comp]) >= 0) {
+		    d = uvchr_to_utf8(d, ch);
+		    matches++;
+		}
+		else if (ch == -1) {	/* -1 is unmapped character */
+		    Move(s, d, len, U8);
+		    d += len;
+		}
+		else if (ch == -2)      /* -2 is delete character */
+		    matches++;
+		s += len;
+	    }
+	}
+	if (grows) {
+	    sv_setpvn(sv, (char*)dstart, d - dstart);
+	    Safefree(dstart);
+	}
+	else {
+	    *d = '\0';
+	    SvCUR_set(sv, d - dstart);
+	}
+	SvUTF8_on(sv);
+    }
+    SvSETMAGIC(sv);
+    return matches;
+}
+
+STATIC I32
+S_do_trans_simple_utf8(pTHX_ SV * const sv)
+{
+    U8 *s;
+    U8 *send;
+    U8 *d;
+    U8 *start;
+    U8 *dstart, *dend;
+    I32 matches = 0;
+    const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
+    STRLEN len;
+    SV* const  rv =
+#ifdef USE_ITHREADS
+		    PAD_SVl(cPADOP->op_padix);
+#else
+		    MUTABLE_SV(cSVOP->op_sv);
+#endif
+    HV* const  hv = MUTABLE_HV(SvRV(rv));
+    SV* const * svp = hv_fetchs(hv, "NONE", FALSE);
+    const UV none = svp ? SvUV(*svp) : 0x7fffffff;
+    const UV extra = none + 1;
+    UV final = 0;
+    U8 hibit = 0;
+
+    PERL_ARGS_ASSERT_DO_TRANS_SIMPLE_UTF8;
+
+    s = (U8*)SvPV_nomg(sv, len);
+    if (!SvUTF8(sv)) {
+	const U8 *t = s;
+	const U8 * const e = s + len;
+	while (t < e) {
+	    const U8 ch = *t++;
+	    hibit = !NATIVE_BYTE_IS_INVARIANT(ch);
+	    if (hibit) {
+		s = bytes_to_utf8(s, &len);
+		break;
+	    }
+	}
+    }
+    send = s + len;
+    start = s;
+
+    svp = hv_fetchs(hv, "FINAL", FALSE);
+    if (svp)
+	final = SvUV(*svp);
+
+    if (grows) {
+	/* d needs to be bigger than s, in case e.g. upgrading is required */
+	Newx(d, len * 3 + UTF8_MAXBYTES, U8);
+	dend = d + len * 3;
+	dstart = d;
+    }
+    else {
+	dstart = d = s;
+	dend = d + len;
+    }
+
+    while (s < send) {
+	const UV uv = swash_fetch(rv, s, TRUE);
+	if (uv < none) {
+	    s += UTF8SKIP(s);
+	    matches++;
+	    d = uvchr_to_utf8(d, uv);
+	}
+	else if (uv == none) {
+	    const int i = UTF8SKIP(s);
+	    Move(s, d, i, U8);
+	    d += i;
+	    s += i;
+	}
+	else if (uv == extra) {
+	    s += UTF8SKIP(s);
+	    matches++;
+	    d = uvchr_to_utf8(d, final);
+	}
+	else
+	    s += UTF8SKIP(s);
+
+	if (d > dend) {
+	    const STRLEN clen = d - dstart;
+	    const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
+	    if (!grows)
+		Perl_croak(aTHX_ "panic: do_trans_simple_utf8 line %d",__LINE__);
+	    Renew(dstart, nlen + UTF8_MAXBYTES, U8);
+	    d = dstart + clen;
+	    dend = dstart + nlen;
+	}
+    }
+    if (grows || hibit) {
+	sv_setpvn(sv, (char*)dstart, d - dstart);
+	Safefree(dstart);
+	if (grows && hibit)
+	    Safefree(start);
+    }
+    else {
+	*d = '\0';
+	SvCUR_set(sv, d - dstart);
+    }
+    SvSETMAGIC(sv);
+    SvUTF8_on(sv);
+
+    return matches;
+}
+
+STATIC I32
+S_do_trans_count_utf8(pTHX_ SV * const sv)
+{
+    const U8 *s;
+    const U8 *start = NULL;
+    const U8 *send;
+    I32 matches = 0;
+    STRLEN len;
+    SV* const  rv =
+#ifdef USE_ITHREADS
+		    PAD_SVl(cPADOP->op_padix);
+#else
+		    MUTABLE_SV(cSVOP->op_sv);
+#endif
+    HV* const hv = MUTABLE_HV(SvRV(rv));
+    SV* const * const svp = hv_fetchs(hv, "NONE", FALSE);
+    const UV none = svp ? SvUV(*svp) : 0x7fffffff;
+    const UV extra = none + 1;
+    U8 hibit = 0;
+
+    PERL_ARGS_ASSERT_DO_TRANS_COUNT_UTF8;
+
+    s = (const U8*)SvPV_nomg_const(sv, len);
+    if (!SvUTF8(sv)) {
+	const U8 *t = s;
+	const U8 * const e = s + len;
+	while (t < e) {
+	    const U8 ch = *t++;
+	    hibit = !NATIVE_BYTE_IS_INVARIANT(ch);
+	    if (hibit) {
+		start = s = bytes_to_utf8(s, &len);
+		break;
+	    }
+	}
+    }
+    send = s + len;
+
+    while (s < send) {
+	const UV uv = swash_fetch(rv, s, TRUE);
+	if (uv < none || uv == extra)
+	    matches++;
+	s += UTF8SKIP(s);
+    }
+    if (hibit)
+        Safefree(start);
+
+    return matches;
+}
+
+STATIC I32
+S_do_trans_complex_utf8(pTHX_ SV * const sv)
+{
+    U8 *start, *send;
+    U8 *d;
+    I32 matches = 0;
+    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* const  rv =
+#ifdef USE_ITHREADS
+		    PAD_SVl(cPADOP->op_padix);
+#else
+		    MUTABLE_SV(cSVOP->op_sv);
+#endif
+    HV * const hv = MUTABLE_HV(SvRV(rv));
+    SV * const *svp = hv_fetchs(hv, "NONE", FALSE);
+    const UV none = svp ? SvUV(*svp) : 0x7fffffff;
+    const UV extra = none + 1;
+    UV final = 0;
+    bool havefinal = FALSE;
+    STRLEN len;
+    U8 *dstart, *dend;
+    U8 hibit = 0;
+    U8 *s = (U8*)SvPV_nomg(sv, len);
+
+    PERL_ARGS_ASSERT_DO_TRANS_COMPLEX_UTF8;
+
+    if (!SvUTF8(sv)) {
+	const U8 *t = s;
+	const U8 * const e = s + len;
+	while (t < e) {
+	    const U8 ch = *t++;
+	    hibit = !NATIVE_BYTE_IS_INVARIANT(ch);
+	    if (hibit) {
+		s = bytes_to_utf8(s, &len);
+		break;
+	    }
+	}
+    }
+    send = s + len;
+    start = s;
+
+    svp = hv_fetchs(hv, "FINAL", FALSE);
+    if (svp) {
+	final = SvUV(*svp);
+	havefinal = TRUE;
+    }
+
+    if (grows) {
+	/* d needs to be bigger than s, in case e.g. upgrading is required */
+	Newx(d, len * 3 + UTF8_MAXBYTES, U8);
+	dend = d + len * 3;
+	dstart = d;
+    }
+    else {
+	dstart = d = s;
+	dend = d + len;
+    }
+
+    if (squash) {
+	UV puv = 0xfeedface;
+	while (s < send) {
+	    UV uv = swash_fetch(rv, s, TRUE);
+	
+	    if (d > dend) {
+		const STRLEN clen = d - dstart;
+		const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
+		if (!grows)
+		    Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
+		Renew(dstart, nlen + UTF8_MAXBYTES, U8);
+		d = dstart + clen;
+		dend = dstart + nlen;
+	    }
+	    if (uv < none) {
+		matches++;
+		s += UTF8SKIP(s);
+		if (uv != puv) {
+		    d = uvchr_to_utf8(d, uv);
+		    puv = uv;
+		}
+		continue;
+	    }
+	    else if (uv == none) {	/* "none" is unmapped character */
+		const int i = UTF8SKIP(s);
+		Move(s, d, i, U8);
+		d += i;
+		s += i;
+		puv = 0xfeedface;
+		continue;
+	    }
+	    else if (uv == extra && !del) {
+		matches++;
+		if (havefinal) {
+		    s += UTF8SKIP(s);
+		    if (puv != final) {
+			d = uvchr_to_utf8(d, final);
+			puv = final;
+		    }
+		}
+		else {
+		    STRLEN len;
+		    uv = utf8n_to_uvchr(s, send - s, &len, UTF8_ALLOW_DEFAULT);
+		    if (uv != puv) {
+			Move(s, d, len, U8);
+			d += len;
+			puv = uv;
+		    }
+		    s += len;
+		}
+		continue;
+	    }
+	    matches++;			/* "none+1" is delete character */
+	    s += UTF8SKIP(s);
+	}
+    }
+    else {
+	while (s < send) {
+	    const UV uv = swash_fetch(rv, s, TRUE);
+	    if (d > dend) {
+	        const STRLEN clen = d - dstart;
+		const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
+		if (!grows)
+		    Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
+		Renew(dstart, nlen + UTF8_MAXBYTES, U8);
+		d = dstart + clen;
+		dend = dstart + nlen;
+	    }
+	    if (uv < none) {
+		matches++;
+		s += UTF8SKIP(s);
+		d = uvchr_to_utf8(d, uv);
+		continue;
+	    }
+	    else if (uv == none) {	/* "none" is unmapped character */
+		const int i = UTF8SKIP(s);
+		Move(s, d, i, U8);
+		d += i;
+		s += i;
+		continue;
+	    }
+	    else if (uv == extra && !del) {
+		matches++;
+		s += UTF8SKIP(s);
+		d = uvchr_to_utf8(d, final);
+		continue;
+	    }
+	    matches++;			/* "none+1" is delete character */
+	    s += UTF8SKIP(s);
+	}
+    }
+    if (grows || hibit) {
+	sv_setpvn(sv, (char*)dstart, d - dstart);
+	Safefree(dstart);
+	if (grows && hibit)
+	    Safefree(start);
+    }
+    else {
+	*d = '\0';
+	SvCUR_set(sv, d - dstart);
+    }
+    SvUTF8_on(sv);
+    SvSETMAGIC(sv);
+
+    return matches;
+}
+
+I32
+Perl_do_trans(pTHX_ SV *sv)
+{
+    STRLEN len;
+    const I32 flags = PL_op->op_private;
+    const I32 hasutf = flags & (OPpTRANS_FROM_UTF | OPpTRANS_TO_UTF);
+
+    PERL_ARGS_ASSERT_DO_TRANS;
+
+    if (SvREADONLY(sv) && !(flags & OPpTRANS_IDENTICAL)) {
+        Perl_croak_no_modify();
+    }
+    (void)SvPV_const(sv, len);
+    if (!len)
+	return 0;
+    if (!(flags & OPpTRANS_IDENTICAL)) {
+	if (!SvPOKp(sv) || SvTHINKFIRST(sv))
+	    (void)SvPV_force_nomg(sv, len);
+	(void)SvPOK_only_UTF8(sv);
+    }
+
+    DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
+
+    /* If we use only OPpTRANS_IDENTICAL to bypass the READONLY check,
+     * we must also rely on it to choose the readonly strategy.
+     */
+    if (flags & OPpTRANS_IDENTICAL) {
+        return hasutf ? do_trans_count_utf8(sv) : do_trans_count(sv);
+    } else if (flags & (OPpTRANS_SQUASH|OPpTRANS_DELETE|OPpTRANS_COMPLEMENT)) {
+        return hasutf ? do_trans_complex_utf8(sv) : do_trans_complex(sv);
+    } else {
+        return hasutf ? do_trans_simple_utf8(sv) : do_trans_simple(sv);
+    }
+}
+
+void
+Perl_do_join(pTHX_ SV *sv, SV *delim, SV **mark, SV **sp)
+{
+    SV ** const oldmark = mark;
+    I32 items = sp - mark;
+    STRLEN len;
+    STRLEN delimlen;
+    const char * const delims = SvPV_const(delim, delimlen);
+
+    PERL_ARGS_ASSERT_DO_JOIN;
+
+    mark++;
+    len = (items > 0 ? (delimlen * (items - 1) ) : 0);
+    SvUPGRADE(sv, SVt_PV);
+    if (SvLEN(sv) < len + items) {	/* current length is way too short */
+	while (items-- > 0) {
+	    if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
+		STRLEN tmplen;
+		SvPV_const(*mark, tmplen);
+		len += tmplen;
+	    }
+	    mark++;
+	}
+	SvGROW(sv, len + 1);		/* so try to pre-extend */
+
+	mark = oldmark;
+	items = sp - mark;
+	++mark;
+    }
+
+    sv_setpvs(sv, "");
+    /* sv_setpv retains old UTF8ness [perl #24846] */
+    SvUTF8_off(sv);
+
+    if (TAINTING_get && SvMAGICAL(sv))
+	SvTAINTED_off(sv);
+
+    if (items-- > 0) {
+	if (*mark)
+	    sv_catsv(sv, *mark);
+	mark++;
+    }
+
+    if (delimlen) {
+	const U32 delimflag = DO_UTF8(delim) ? SV_CATUTF8 : SV_CATBYTES;
+	for (; items > 0; items--,mark++) {
+	    STRLEN len;
+	    const char *s;
+	    sv_catpvn_flags(sv,delims,delimlen,delimflag);
+	    s = SvPV_const(*mark,len);
+	    sv_catpvn_flags(sv,s,len,
+			    DO_UTF8(*mark) ? SV_CATUTF8 : SV_CATBYTES);
+	}
+    }
+    else {
+	for (; items > 0; items--,mark++)
+	{
+	    STRLEN len;
+	    const char *s = SvPV_const(*mark,len);
+	    sv_catpvn_flags(sv,s,len,
+			    DO_UTF8(*mark) ? SV_CATUTF8 : SV_CATBYTES);
+	}
+    }
+    SvSETMAGIC(sv);
+}
+
+void
+Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
+{
+    STRLEN patlen;
+    const char * const pat = SvPV_const(*sarg, patlen);
+    bool do_taint = FALSE;
+
+    PERL_ARGS_ASSERT_DO_SPRINTF;
+
+    if (SvTAINTED(*sarg))
+	TAINT_PROPER(
+		(PL_op && PL_op->op_type < OP_max)
+		    ? (PL_op->op_type == OP_PRTF)
+			? "printf"
+			: PL_op_name[PL_op->op_type]
+		    : "(unknown)"
+	);
+    SvUTF8_off(sv);
+    if (DO_UTF8(*sarg))
+        SvUTF8_on(sv);
+    sv_vsetpvfn(sv, pat, patlen, NULL, sarg + 1, len - 1, &do_taint);
+    SvSETMAGIC(sv);
+    if (do_taint)
+	SvTAINTED_on(sv);
+}
+
+/* currently converts input to bytes if possible, but doesn't sweat failure */
+UV
+Perl_do_vecget(pTHX_ SV *sv, SSize_t offset, int size)
+{
+    STRLEN srclen, len, uoffset, bitoffs = 0;
+    const I32 svpv_flags = ((PL_op->op_flags & OPf_MOD || LVRET)
+                                          ? SV_UNDEF_RETURNS_NULL : 0);
+    unsigned char *s = (unsigned char *)
+                            SvPV_flags(sv, srclen, (svpv_flags|SV_GMAGIC));
+    UV retnum = 0;
+
+    if (!s) {
+      s = (unsigned char *)"";
+    }
+    
+    PERL_ARGS_ASSERT_DO_VECGET;
+
+    if (offset < 0)
+	return 0;
+    if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
+	Perl_croak(aTHX_ "Illegal number of bits in vec");
+
+    if (SvUTF8(sv)) {
+	(void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
+        /* PVX may have changed */
+        s = (unsigned char *) SvPV_flags(sv, srclen, svpv_flags);
+    }
+
+    if (size < 8) {
+	bitoffs = ((offset%8)*size)%8;
+	uoffset = offset/(8/size);
+    }
+    else if (size > 8)
+	uoffset = offset*(size/8);
+    else
+	uoffset = offset;
+
+    len = uoffset + (bitoffs + size + 7)/8;	/* required number of bytes */
+    if (len > srclen) {
+	if (size <= 8)
+	    retnum = 0;
+	else {
+	    if (size == 16) {
+		if (uoffset >= srclen)
+		    retnum = 0;
+		else
+		    retnum = (UV) s[uoffset] <<  8;
+	    }
+	    else if (size == 32) {
+		if (uoffset >= srclen)
+		    retnum = 0;
+		else if (uoffset + 1 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 24);
+		else if (uoffset + 2 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 24) +
+			((UV) s[uoffset + 1] << 16);
+		else
+		    retnum =
+			((UV) s[uoffset    ] << 24) +
+			((UV) s[uoffset + 1] << 16) +
+			(     s[uoffset + 2] <<  8);
+	    }
+#ifdef UV_IS_QUAD
+	    else if (size == 64) {
+		Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE),
+			       "Bit vector size > 32 non-portable");
+		if (uoffset >= srclen)
+		    retnum = 0;
+		else if (uoffset + 1 >= srclen)
+		    retnum =
+			(UV) s[uoffset     ] << 56;
+		else if (uoffset + 2 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 56) +
+			((UV) s[uoffset + 1] << 48);
+		else if (uoffset + 3 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 56) +
+			((UV) s[uoffset + 1] << 48) +
+			((UV) s[uoffset + 2] << 40);
+		else if (uoffset + 4 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 56) +
+			((UV) s[uoffset + 1] << 48) +
+			((UV) s[uoffset + 2] << 40) +
+			((UV) s[uoffset + 3] << 32);
+		else if (uoffset + 5 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 56) +
+			((UV) s[uoffset + 1] << 48) +
+			((UV) s[uoffset + 2] << 40) +
+			((UV) s[uoffset + 3] << 32) +
+			((UV) s[uoffset + 4] << 24);
+		else if (uoffset + 6 >= srclen)
+		    retnum =
+			((UV) s[uoffset    ] << 56) +
+			((UV) s[uoffset + 1] << 48) +
+			((UV) s[uoffset + 2] << 40) +
+			((UV) s[uoffset + 3] << 32) +
+			((UV) s[uoffset + 4] << 24) +
+			((UV) s[uoffset + 5] << 16);
+		else
+		    retnum =
+			((UV) s[uoffset    ] << 56) +
+			((UV) s[uoffset + 1] << 48) +
+			((UV) s[uoffset + 2] << 40) +
+			((UV) s[uoffset + 3] << 32) +
+			((UV) s[uoffset + 4] << 24) +
+			((UV) s[uoffset + 5] << 16) +
+			((UV) s[uoffset + 6] <<  8);
+	    }
+#endif
+	}
+    }
+    else if (size < 8)
+	retnum = (s[uoffset] >> bitoffs) & ((1 << size) - 1);
+    else {
+	if (size == 8)
+	    retnum = s[uoffset];
+	else if (size == 16)
+	    retnum =
+		((UV) s[uoffset] <<      8) +
+		      s[uoffset + 1];
+	else if (size == 32)
+	    retnum =
+		((UV) s[uoffset    ] << 24) +
+		((UV) s[uoffset + 1] << 16) +
+		(     s[uoffset + 2] <<  8) +
+		      s[uoffset + 3];
+#ifdef UV_IS_QUAD
+	else if (size == 64) {
+	    Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE),
+			   "Bit vector size > 32 non-portable");
+	    retnum =
+		((UV) s[uoffset    ] << 56) +
+		((UV) s[uoffset + 1] << 48) +
+		((UV) s[uoffset + 2] << 40) +
+		((UV) s[uoffset + 3] << 32) +
+		((UV) s[uoffset + 4] << 24) +
+		((UV) s[uoffset + 5] << 16) +
+		(     s[uoffset + 6] <<  8) +
+		      s[uoffset + 7];
+	}
+#endif
+    }
+
+    return retnum;
+}
+
+/* currently converts input to bytes if possible but doesn't sweat failures,
+ * although it does ensure that the string it clobbers is not marked as
+ * utf8-valid any more
+ */
+void
+Perl_do_vecset(pTHX_ SV *sv)
+{
+    SSize_t offset, bitoffs = 0;
+    int size;
+    unsigned char *s;
+    UV lval;
+    I32 mask;
+    STRLEN targlen;
+    STRLEN len;
+    SV * const targ = LvTARG(sv);
+
+    PERL_ARGS_ASSERT_DO_VECSET;
+
+    if (!targ)
+	return;
+    s = (unsigned char*)SvPV_force_flags(targ, targlen,
+                                         SV_GMAGIC | SV_UNDEF_RETURNS_NULL);
+    if (SvUTF8(targ)) {
+	/* This is handled by the SvPOK_only below...
+	if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
+	    SvUTF8_off(targ);
+	 */
+	(void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
+    }
+
+    (void)SvPOK_only(targ);
+    lval = SvUV(sv);
+    offset = LvTARGOFF(sv);
+    if (offset < 0)
+	Perl_croak(aTHX_ "Negative offset to vec in lvalue context");
+    size = LvTARGLEN(sv);
+    if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
+	Perl_croak(aTHX_ "Illegal number of bits in vec");
+
+    if (size < 8) {
+	bitoffs = ((offset%8)*size)%8;
+	offset /= 8/size;
+    }
+    else if (size > 8)
+	offset *= size/8;
+
+    len = offset + (bitoffs + size + 7)/8;	/* required number of bytes */
+    if (len > targlen) {
+	s = (unsigned char*)SvGROW(targ, len + 1);
+	(void)memzero((char *)(s + targlen), len - targlen + 1);
+	SvCUR_set(targ, len);
+    }
+
+    if (size < 8) {
+	mask = (1 << size) - 1;
+	lval &= mask;
+	s[offset] &= ~(mask << bitoffs);
+	s[offset] |= lval << bitoffs;
+    }
+    else {
+	if (size == 8)
+	    s[offset  ] = (U8)( lval        & 0xff);
+	else if (size == 16) {
+	    s[offset  ] = (U8)((lval >>  8) & 0xff);
+	    s[offset+1] = (U8)( lval        & 0xff);
+	}
+	else if (size == 32) {
+	    s[offset  ] = (U8)((lval >> 24) & 0xff);
+	    s[offset+1] = (U8)((lval >> 16) & 0xff);
+	    s[offset+2] = (U8)((lval >>  8) & 0xff);
+	    s[offset+3] = (U8)( lval        & 0xff);
+	}
+#ifdef UV_IS_QUAD
+	else if (size == 64) {
+	    Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE),
+			   "Bit vector size > 32 non-portable");
+	    s[offset  ] = (U8)((lval >> 56) & 0xff);
+	    s[offset+1] = (U8)((lval >> 48) & 0xff);
+	    s[offset+2] = (U8)((lval >> 40) & 0xff);
+	    s[offset+3] = (U8)((lval >> 32) & 0xff);
+	    s[offset+4] = (U8)((lval >> 24) & 0xff);
+	    s[offset+5] = (U8)((lval >> 16) & 0xff);
+	    s[offset+6] = (U8)((lval >>  8) & 0xff);
+	    s[offset+7] = (U8)( lval        & 0xff);
+	}
+#endif
+    }
+    SvSETMAGIC(targ);
+}
+
+void
+Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
+{
+#ifdef LIBERAL
+    long *dl;
+    long *ll;
+    long *rl;
+#endif
+    char *dc;
+    STRLEN leftlen;
+    STRLEN rightlen;
+    const char *lc;
+    const char *rc;
+    STRLEN len;
+    STRLEN lensave;
+    const char *lsave;
+    const char *rsave;
+    bool left_utf;
+    bool right_utf;
+    STRLEN needlen = 0;
+
+    PERL_ARGS_ASSERT_DO_VOP;
+
+    if (sv != left || (optype != OP_BIT_AND && !SvOK(sv)))
+	sv_setpvs(sv, "");	/* avoid undef warning on |= and ^= */
+    if (sv == left) {
+	lsave = lc = SvPV_force_nomg(left, leftlen);
+    }
+    else {
+	lsave = lc = SvPV_nomg_const(left, leftlen);
+	SvPV_force_nomg_nolen(sv);
+    }
+    rsave = rc = SvPV_nomg_const(right, rightlen);
+
+    /* This need to come after SvPV to ensure that string overloading has
+       fired off.  */
+
+    left_utf = DO_UTF8(left);
+    right_utf = DO_UTF8(right);
+
+    if (left_utf && !right_utf) {
+	/* Avoid triggering overloading again by using temporaries.
+	   Maybe there should be a variant of sv_utf8_upgrade that takes pvn
+	*/
+	right = newSVpvn_flags(rsave, rightlen, SVs_TEMP);
+	sv_utf8_upgrade(right);
+	rsave = rc = SvPV_nomg_const(right, rightlen);
+	right_utf = TRUE;
+    }
+    else if (!left_utf && right_utf) {
+	left = newSVpvn_flags(lsave, leftlen, SVs_TEMP);
+	sv_utf8_upgrade(left);
+	lsave = lc = SvPV_nomg_const(left, leftlen);
+	left_utf = TRUE;
+    }
+
+    len = leftlen < rightlen ? leftlen : rightlen;
+    lensave = len;
+    SvCUR_set(sv, len);
+    (void)SvPOK_only(sv);
+    if ((left_utf || right_utf) && (sv == left || sv == right)) {
+	needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
+	Newxz(dc, needlen + 1, char);
+    }
+    else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
+	dc = SvPV_force_nomg_nolen(sv);
+	if (SvLEN(sv) < len + 1) {
+	    dc = SvGROW(sv, len + 1);
+	    (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
+	}
+	if (optype != OP_BIT_AND && (left_utf || right_utf))
+	    dc = SvGROW(sv, leftlen + rightlen + 1);
+    }
+    else {
+	needlen = optype == OP_BIT_AND
+		    ? len : (leftlen > rightlen ? leftlen : rightlen);
+	Newxz(dc, needlen + 1, char);
+	sv_usepvn_flags(sv, dc, needlen, SV_HAS_TRAILING_NUL);
+	dc = SvPVX(sv);		/* sv_usepvn() calls Renew() */
+    }
+    if (left_utf || right_utf) {
+	UV duc, luc, ruc;
+	char *dcorig = dc;
+	char *dcsave = NULL;
+	STRLEN lulen = leftlen;
+	STRLEN rulen = rightlen;
+	STRLEN ulen;
+
+	switch (optype) {
+	case OP_BIT_AND:
+	    while (lulen && rulen) {
+		luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
+		lc += ulen;
+		lulen -= ulen;
+		ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
+		rc += ulen;
+		rulen -= ulen;
+		duc = luc & ruc;
+		dc = (char*)uvchr_to_utf8((U8*)dc, duc);
+	    }
+	    if (sv == left || sv == right)
+		(void)sv_usepvn(sv, dcorig, needlen);
+	    SvCUR_set(sv, dc - dcorig);
+	    break;
+	case OP_BIT_XOR:
+	    while (lulen && rulen) {
+		luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
+		lc += ulen;
+		lulen -= ulen;
+		ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
+		rc += ulen;
+		rulen -= ulen;
+		duc = luc ^ ruc;
+		dc = (char*)uvchr_to_utf8((U8*)dc, duc);
+	    }
+	    goto mop_up_utf;
+	case OP_BIT_OR:
+	    while (lulen && rulen) {
+		luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
+		lc += ulen;
+		lulen -= ulen;
+		ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
+		rc += ulen;
+		rulen -= ulen;
+		duc = luc | ruc;
+		dc = (char*)uvchr_to_utf8((U8*)dc, duc);
+	    }
+	  mop_up_utf:
+	    if (rulen)
+		dcsave = savepvn(rc, rulen);
+	    else if (lulen)
+		dcsave = savepvn(lc, lulen);
+	    if (sv == left || sv == right)
+		(void)sv_usepvn(sv, dcorig, needlen); /* uses Renew(); defaults to nomg */
+	    SvCUR_set(sv, dc - dcorig);
+	    if (rulen)
+		sv_catpvn_nomg(sv, dcsave, rulen);
+	    else if (lulen)
+		sv_catpvn_nomg(sv, dcsave, lulen);
+	    else
+		*SvEND(sv) = '\0';
+	    Safefree(dcsave);
+	    break;
+	default:
+	    if (sv == left || sv == right)
+		Safefree(dcorig);
+	    Perl_croak(aTHX_ "panic: do_vop called for op %u (%s)",
+			(unsigned)optype, PL_op_name[optype]);
+	}
+	SvUTF8_on(sv);
+	goto finish;
+    }
+    else
+#ifdef LIBERAL
+    if (len >= sizeof(long)*4 &&
+	!((unsigned long)dc % sizeof(long)) &&
+	!((unsigned long)lc % sizeof(long)) &&
+	!((unsigned long)rc % sizeof(long)))	/* It's almost always aligned... */
+    {
+	const STRLEN remainder = len % (sizeof(long)*4);
+	len /= (sizeof(long)*4);
+
+	dl = (long*)dc;
+	ll = (long*)lc;
+	rl = (long*)rc;
+
+	switch (optype) {
+	case OP_BIT_AND:
+	    while (len--) {
+		*dl++ = *ll++ & *rl++;
+		*dl++ = *ll++ & *rl++;
+		*dl++ = *ll++ & *rl++;
+		*dl++ = *ll++ & *rl++;
+	    }
+	    break;
+	case OP_BIT_XOR:
+	    while (len--) {
+		*dl++ = *ll++ ^ *rl++;
+		*dl++ = *ll++ ^ *rl++;
+		*dl++ = *ll++ ^ *rl++;
+		*dl++ = *ll++ ^ *rl++;
+	    }
+	    break;
+	case OP_BIT_OR:
+	    while (len--) {
+		*dl++ = *ll++ | *rl++;
+		*dl++ = *ll++ | *rl++;
+		*dl++ = *ll++ | *rl++;
+		*dl++ = *ll++ | *rl++;
+	    }
+	}
+
+	dc = (char*)dl;
+	lc = (char*)ll;
+	rc = (char*)rl;
+
+	len = remainder;
+    }
+#endif
+    {
+	switch (optype) {
+	case OP_BIT_AND:
+	    while (len--)
+		*dc++ = *lc++ & *rc++;
+	    *dc = '\0';
+	    break;
+	case OP_BIT_XOR:
+	    while (len--)
+		*dc++ = *lc++ ^ *rc++;
+	    goto mop_up;
+	case OP_BIT_OR:
+	    while (len--)
+		*dc++ = *lc++ | *rc++;
+	  mop_up:
+	    len = lensave;
+	    if (rightlen > len)
+		sv_catpvn_nomg(sv, rsave + len, rightlen - len);
+	    else if (leftlen > (STRLEN)len)
+		sv_catpvn_nomg(sv, lsave + len, leftlen - len);
+	    else
+		*SvEND(sv) = '\0';
+	    break;
+	}
+    }
+  finish:
+    SvTAINT(sv);
+}
+
+
+/* used for: pp_keys(), pp_values() */
+
+OP *
+Perl_do_kv(pTHX)
+{
+    dSP;
+    HV * const keys = MUTABLE_HV(POPs);
+    HE *entry;
+    const I32 gimme = GIMME_V;
+    const I32 dokv =     (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV);
+    /* op_type is OP_RKEYS/OP_RVALUES if pp_rkeys delegated to here */
+    const I32 dokeys =   dokv || (PL_op->op_type == OP_KEYS || PL_op->op_type == OP_RKEYS);
+    const I32 dovalues = dokv || (PL_op->op_type == OP_VALUES || PL_op->op_type == OP_RVALUES);
+
+    (void)hv_iterinit(keys);	/* always reset iterator regardless */
+
+    if (gimme == G_VOID)
+	RETURN;
+
+    if (gimme == G_SCALAR) {
+	if (PL_op->op_flags & OPf_MOD || LVRET) {	/* lvalue */
+	    SV * const ret = sv_2mortal(newSV_type(SVt_PVLV));  /* Not TARG RT#67838 */
+	    sv_magic(ret, NULL, PERL_MAGIC_nkeys, NULL, 0);
+	    LvTYPE(ret) = 'k';
+	    LvTARG(ret) = SvREFCNT_inc_simple(keys);
+	    PUSHs(ret);
+	}
+	else {
+	    IV i;
+	    dTARGET;
+
+	    if (! SvTIED_mg((const SV *)keys, PERL_MAGIC_tied) ) {
+		i = HvUSEDKEYS(keys);
+	    }
+	    else {
+		i = 0;
+		while (hv_iternext(keys)) i++;
+	    }
+	    PUSHi( i );
+	}
+	RETURN;
+    }
+
+    EXTEND(SP, HvUSEDKEYS(keys) * (dokeys + dovalues));
+
+    while ((entry = hv_iternext(keys))) {
+	if (dokeys) {
+	    SV* const sv = hv_iterkeysv(entry);
+	    XPUSHs(sv);
+	}
+	if (dovalues) {
+	    SV *tmpstr;
+	    tmpstr = hv_iterval(keys,entry);
+	    DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
+			    (unsigned long)HeHASH(entry),
+			    (int)HvMAX(keys)+1,
+			    (unsigned long)(HeHASH(entry) & HvMAX(keys))));
+	    XPUSHs(tmpstr);
+	}
+    }
+    RETURN;
+}
+
+/*
+ * ex: set ts=8 sts=4 sw=4 et:
+ */