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diff --git a/contrib/perl5/op.h b/contrib/perl5/op.h
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+/* op.h
+ *
+ * Copyright (c) 1991-1997, Larry Wall
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
+ *
+ */
+
+/*
+ * The fields of BASEOP are:
+ * op_next Pointer to next ppcode to execute after this one.
+ * (Top level pre-grafted op points to first op,
+ * but this is replaced when op is grafted in, when
+ * this op will point to the real next op, and the new
+ * parent takes over role of remembering starting op.)
+ * op_ppaddr Pointer to current ppcode's function.
+ * op_type The type of the operation.
+ * op_flags Flags common to all operations. See OPf_* below.
+ * op_private Flags peculiar to a particular operation (BUT,
+ * by default, set to the number of children until
+ * the operation is privatized by a check routine,
+ * which may or may not check number of children).
+ */
+
+typedef U32 PADOFFSET;
+#define NOT_IN_PAD ((PADOFFSET) -1)
+
+#ifdef DEBUGGING_OPS
+#define OPCODE opcode
+#else
+#define OPCODE U16
+#endif
+
+#ifdef BASEOP_DEFINITION
+#define BASEOP BASEOP_DEFINITION
+#else
+#define BASEOP \
+ OP* op_next; \
+ OP* op_sibling; \
+ OP* (CPERLscope(*op_ppaddr))_((ARGSproto)); \
+ PADOFFSET op_targ; \
+ OPCODE op_type; \
+ U16 op_seq; \
+ U8 op_flags; \
+ U8 op_private;
+#endif
+
+#define OP_GIMME(op,dfl) \
+ (((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \
+ ((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \
+ ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \
+ dfl)
+
+#define GIMME_V OP_GIMME(PL_op, block_gimme())
+
+/* Public flags */
+
+#define OPf_WANT 3 /* Mask for "want" bits: */
+#define OPf_WANT_VOID 1 /* Want nothing */
+#define OPf_WANT_SCALAR 2 /* Want single value */
+#define OPf_WANT_LIST 3 /* Want list of any length */
+#define OPf_KIDS 4 /* There is a firstborn child. */
+#define OPf_PARENS 8 /* This operator was parenthesized. */
+ /* (Or block needs explicit scope entry.) */
+#define OPf_REF 16 /* Certified reference. */
+ /* (Return container, not containee). */
+#define OPf_MOD 32 /* Will modify (lvalue). */
+#define OPf_STACKED 64 /* Some arg is arriving on the stack. */
+#define OPf_SPECIAL 128 /* Do something weird for this op: */
+ /* On local LVAL, don't init local value. */
+ /* On OP_SORT, subroutine is inlined. */
+ /* On OP_NOT, inversion was implicit. */
+ /* On OP_LEAVE, don't restore curpm. */
+ /* On truncate, we truncate filehandle */
+ /* On control verbs, we saw no label */
+ /* On flipflop, we saw ... instead of .. */
+ /* On UNOPs, saw bare parens, e.g. eof(). */
+ /* On OP_ENTERSUB || OP_NULL, saw a "do". */
+ /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
+ /* On OP_ENTERITER, loop var is per-thread */
+
+/* old names; don't use in new code, but don't break them, either */
+#define OPf_LIST OPf_WANT_LIST
+#define OPf_KNOW OPf_WANT
+#define GIMME \
+ (PL_op->op_flags & OPf_WANT \
+ ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
+ ? G_ARRAY \
+ : G_SCALAR) \
+ : dowantarray())
+
+/* Private for lvalues */
+#define OPpLVAL_INTRO 128 /* Lvalue must be localized */
+
+/* Private for OP_AASSIGN */
+#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
+
+/* Private for OP_SASSIGN */
+#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
+
+/* Private for OP_MATCH and OP_SUBST{,CONST} */
+#define OPpRUNTIME 64 /* Pattern coming in on the stack */
+
+/* Private for OP_TRANS */
+#define OPpTRANS_COUNTONLY 8
+#define OPpTRANS_SQUASH 16
+#define OPpTRANS_DELETE 32
+#define OPpTRANS_COMPLEMENT 64
+
+/* Private for OP_REPEAT */
+#define OPpREPEAT_DOLIST 64 /* List replication. */
+
+/* Private for OP_ENTERSUB, OP_RV2?V, OP_?ELEM */
+#define OPpDEREF (32|64) /* Want ref to something: */
+#define OPpDEREF_AV 32 /* Want ref to AV. */
+#define OPpDEREF_HV 64 /* Want ref to HV. */
+#define OPpDEREF_SV (32|64) /* Want ref to SV. */
+ /* OP_ENTERSUB only */
+#define OPpENTERSUB_DB 16 /* Debug subroutine. */
+#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
+ /* OP_?ELEM only */
+#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
+ /* for OP_RV2?V, lower bits carry hints */
+
+/* Private for OP_CONST */
+#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
+#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
+#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
+
+/* Private for OP_FLIP/FLOP */
+#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
+
+/* Private for OP_LIST */
+#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
+
+/* Private for OP_DELETE */
+#define OPpSLICE 64 /* Operating on a list of keys */
+
+/* Private for OP_SORT, OP_PRTF, OP_SPRINTF, string cmp'n, and case changers */
+#define OPpLOCALE 64 /* Use locale */
+
+/* Private for OP_THREADSV */
+#define OPpDONE_SVREF 64 /* Been through newSVREF once */
+
+struct op {
+ BASEOP
+};
+
+struct unop {
+ BASEOP
+ OP * op_first;
+};
+
+struct binop {
+ BASEOP
+ OP * op_first;
+ OP * op_last;
+};
+
+struct logop {
+ BASEOP
+ OP * op_first;
+ OP * op_other;
+};
+
+struct condop {
+ BASEOP
+ OP * op_first;
+ OP * op_true;
+ OP * op_false;
+};
+
+struct listop {
+ BASEOP
+ OP * op_first;
+ OP * op_last;
+ U32 op_children;
+};
+
+struct pmop {
+ BASEOP
+ OP * op_first;
+ OP * op_last;
+ U32 op_children;
+ OP * op_pmreplroot;
+ OP * op_pmreplstart;
+ PMOP * op_pmnext; /* list of all scanpats */
+ REGEXP * op_pmregexp; /* compiled expression */
+ U16 op_pmflags;
+ U16 op_pmpermflags;
+ U8 op_pmdynflags;
+};
+
+#define PMdf_USED 0x01 /* pm has been used once already */
+#define PMdf_TAINTED 0x02 /* pm compiled from tainted pattern */
+
+#define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
+#define PMf_ONCE 0x0002 /* use pattern only once per reset */
+#define PMf_REVERSED 0x0004 /* Should be matched right->left */
+#define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */
+#define PMf_SKIPWHITE 0x0010 /* skip leading whitespace for split */
+#define PMf_WHITE 0x0020 /* pattern is \s+ */
+#define PMf_CONST 0x0040 /* subst replacement is constant */
+#define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
+#define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
+#define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
+#define PMf_EVAL 0x0400 /* evaluating replacement as expr */
+#define PMf_LOCALE 0x0800 /* use locale for character types */
+#define PMf_MULTILINE 0x1000 /* assume multiple lines */
+#define PMf_SINGLELINE 0x2000 /* assume single line */
+#define PMf_FOLD 0x4000 /* case insensitivity */
+#define PMf_EXTENDED 0x8000 /* chuck embedded whitespace */
+
+/* mask of bits stored in regexp->reganch */
+#define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED)
+
+struct svop {
+ BASEOP
+ SV * op_sv;
+};
+
+struct gvop {
+ BASEOP
+ GV * op_gv;
+};
+
+struct pvop {
+ BASEOP
+ char * op_pv;
+};
+
+struct loop {
+ BASEOP
+ OP * op_first;
+ OP * op_last;
+ U32 op_children;
+ OP * op_redoop;
+ OP * op_nextop;
+ OP * op_lastop;
+};
+
+#define cUNOP ((UNOP*)PL_op)
+#define cBINOP ((BINOP*)PL_op)
+#define cLISTOP ((LISTOP*)PL_op)
+#define cLOGOP ((LOGOP*)PL_op)
+#define cCONDOP ((CONDOP*)PL_op)
+#define cPMOP ((PMOP*)PL_op)
+#define cSVOP ((SVOP*)PL_op)
+#define cGVOP ((GVOP*)PL_op)
+#define cPVOP ((PVOP*)PL_op)
+#define cCOP ((COP*)PL_op)
+#define cLOOP ((LOOP*)PL_op)
+
+#define cUNOPo ((UNOP*)o)
+#define cBINOPo ((BINOP*)o)
+#define cLISTOPo ((LISTOP*)o)
+#define cLOGOPo ((LOGOP*)o)
+#define cCONDOPo ((CONDOP*)o)
+#define cPMOPo ((PMOP*)o)
+#define cSVOPo ((SVOP*)o)
+#define cGVOPo ((GVOP*)o)
+#define cPVOPo ((PVOP*)o)
+#define cCVOPo ((CVOP*)o)
+#define cCOPo ((COP*)o)
+#define cLOOPo ((LOOP*)o)
+
+#define kUNOP ((UNOP*)kid)
+#define kBINOP ((BINOP*)kid)
+#define kLISTOP ((LISTOP*)kid)
+#define kLOGOP ((LOGOP*)kid)
+#define kCONDOP ((CONDOP*)kid)
+#define kPMOP ((PMOP*)kid)
+#define kSVOP ((SVOP*)kid)
+#define kGVOP ((GVOP*)kid)
+#define kPVOP ((PVOP*)kid)
+#define kCOP ((COP*)kid)
+#define kLOOP ((LOOP*)kid)
+
+#define Nullop Null(OP*)
+
+/* Lowest byte of opargs */
+#define OA_MARK 1
+#define OA_FOLDCONST 2
+#define OA_RETSCALAR 4
+#define OA_TARGET 8
+#define OA_RETINTEGER 16
+#define OA_OTHERINT 32
+#define OA_DANGEROUS 64
+#define OA_DEFGV 128
+
+/* The next 4 bits encode op class information */
+#define OA_CLASS_MASK (15 << 8)
+
+#define OA_BASEOP (0 << 8)
+#define OA_UNOP (1 << 8)
+#define OA_BINOP (2 << 8)
+#define OA_LOGOP (3 << 8)
+#define OA_CONDOP (4 << 8)
+#define OA_LISTOP (5 << 8)
+#define OA_PMOP (6 << 8)
+#define OA_SVOP (7 << 8)
+#define OA_GVOP (8 << 8)
+#define OA_PVOP (9 << 8)
+#define OA_LOOP (10 << 8)
+#define OA_COP (11 << 8)
+#define OA_BASEOP_OR_UNOP (12 << 8)
+#define OA_FILESTATOP (13 << 8)
+#define OA_LOOPEXOP (14 << 8)
+
+#define OASHIFT 12
+
+/* Remaining nybbles of opargs */
+#define OA_SCALAR 1
+#define OA_LIST 2
+#define OA_AVREF 3
+#define OA_HVREF 4
+#define OA_CVREF 5
+#define OA_FILEREF 6
+#define OA_SCALARREF 7
+#define OA_OPTIONAL 8
+
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