perlintern

       Perl functions

DESCRIPTION
       This file is the autogenerated documentation of functions in the Perl
       interpreter that are documented using Perl's internal documentation
       format but are not marked as part of the Perl API. In other words, they
       are not for use in extensions!

Compile-time scope hooks
       BhkENTRY
               Return an entry from the BHK structure. which is a preprocessor
               token indicating which entry to return. If the appropriate flag
               is not set this will return NULL. The type of the return value
               depends on which entry you ask for.

               NOTE: this function is experimental and may change or be
               removed without notice.

                       void *  BhkENTRY(BHK *hk, which)

       BhkFLAGS
               Return the BHK's flags.

               NOTE: this function is experimental and may change or be
               removed without notice.

                       U32     BhkFLAGS(BHK *hk)

       CALL_BLOCK_HOOKS
               Call all the registered block hooks for type which. which is a
               preprocessing token; the type of arg depends on which.

               NOTE: this function is experimental and may change or be
               removed without notice.

                       void    CALL_BLOCK_HOOKS(which, arg)

CV reference counts and CvOUTSIDE
       CvWEAKOUTSIDE
               Each CV has a pointer, "CvOUTSIDE()", to its lexically
               enclosing CV (if any). Because pointers to anonymous sub
               prototypes are stored in "&" pad slots, it is a possible to get
               a circular reference, with the parent pointing to the child and
               vice-versa. To avoid the ensuing memory leak, we do not
               increment the reference count of the CV pointed to by
               "CvOUTSIDE" in the one specific instance that the parent has a
               "&" pad slot pointing back to us. In this case, we set the
               "CvWEAKOUTSIDE" flag in the child. This allows us to determine
               under what circumstances we should decrement the refcount of
               the parent when freeing the child.

               There is a further complication with non-closure anonymous subs
               (i.e. those that do not refer to any lexicals outside that
               sub). In this case, the anonymous prototype is shared rather

               To avoid this, whenever a CV and its associated pad is freed,
               any "&" entries in the pad are explicitly removed from the pad,
               and if the refcount of the pointed-to anon sub is still
               positive, then that child's "CvOUTSIDE" is set to point to its
               grandparent. This will only occur in the single specific case
               of a non-closure anon prototype having one or more active
               references (such as $a above).

               One other thing to consider is that a CV may be merely
               undefined rather than freed, eg "undef &foo". In this case, its
               refcount may not have reached zero, but we still delete its pad
               and its "CvROOT" etc.  Since various children may still have
               their "CvOUTSIDE" pointing at this undefined CV, we keep its
               own "CvOUTSIDE" for the time being, so that the chain of
               lexical scopes is unbroken. For example, the following should
               print 123:

                   my $x = 123;
                   sub tmp { sub { eval '$x' } }
                   my $a = tmp();
                   undef &tmp;
                   print  $a->();

                       bool    CvWEAKOUTSIDE(CV *cv)

Embedding Functions
       cv_clone
               Clone a CV: make a new CV which points to the same code etc,
               but which has a newly-created pad built by copying the
               prototype pad and capturing any outer lexicals.

                       CV*     cv_clone(CV* proto)

       cv_dump dump the contents of a CV

                       void    cv_dump(const CV *cv, const char *title)

       do_dump_pad
               Dump the contents of a padlist

                       void    do_dump_pad(I32 level, PerlIO *file, PADLIST *padlist, int full)

       intro_my
               "Introduce" my variables to visible status.

                       U32     intro_my()

       pad_add_anon
               Add an anon code entry to the current compiling pad

                       PADOFFSET       pad_add_anon(SV* sv, OPCODE op_type)

       pad_add_name

       pad_alloc
               Allocate a new my or tmp pad entry. For a my, simply push a
               null SV onto the end of PL_comppad, but for a tmp, scan the pad
               from PL_padix upwards for a slot which has no name and no
               active value.

                       PADOFFSET       pad_alloc(I32 optype, U32 tmptype)

       pad_block_start
               Update the pad compilation state variables on entry to a new
               block

                       void    pad_block_start(int full)

       pad_check_dup
               Check for duplicate declarations: report any of:
                    * a my in the current scope with the same name;
                    * an our (anywhere in the pad) with the same name and the
               same stash
                      as "ourstash" "is_our" indicates that the name to check
               is an 'our' declaration

                       void    pad_check_dup(SV *name, const U32 flags, const HV *ourstash)

       pad_findlex
               Find a named lexical anywhere in a chain of nested pads. Add
               fake entries in the inner pads if it's found in an outer one.

               Returns the offset in the bottom pad of the lex or the fake
               lex.  cv is the CV in which to start the search, and seq is the
               current cop_seq to match against. If warn is true, print
               appropriate warnings.  The out_* vars return values, and so are
               pointers to where the returned values should be stored.
               out_capture, if non-null, requests that the innermost instance
               of the lexical is captured; out_name_sv is set to the innermost
               matched namesv or fake namesv; out_flags returns the flags
               normally associated with the IVX field of a fake namesv.

               Note that pad_findlex() is recursive; it recurses up the chain
               of CVs, then comes back down, adding fake entries as it goes.
               It has to be this way because fake namesvs in anon protoypes
               have to store in xlow the index into the parent pad.

                       PADOFFSET       pad_findlex(const char *name, const CV* cv, U32 seq, int warn, SV** out_capture, SV** out_name_sv, int *out_flags)

       pad_fixup_inner_anons
               For any anon CVs in the pad, change CvOUTSIDE of that CV from
               old_cv to new_cv if necessary. Needed when a newly-compiled CV
               has to be moved to a pre-existing CV struct.

                       void    pad_fixup_inner_anons(PADLIST *padlist, CV *old_cv, CV *new_cv)

       pad_free
               Push a new pad frame onto the padlist, unless there's already a
               pad at this depth, in which case don't bother creating a new
               one.  Then give the new pad an @_ in slot zero.

                       void    pad_push(PADLIST *padlist, int depth)

       pad_reset
               Mark all the current temporaries for reuse

                       void    pad_reset()

       pad_setsv
               Set the entry at offset po in the current pad to sv.  Use the
               macro PAD_SETSV() rather than calling this function directly.

                       void    pad_setsv(PADOFFSET po, SV* sv)

       pad_swipe
               Abandon the tmp in the current pad at offset po and replace
               with a new one.

                       void    pad_swipe(PADOFFSET po, bool refadjust)

       pad_tidy
               Tidy up a pad after we've finished compiling it:
                   * remove most stuff from the pads of anonsub prototypes;
                   * give it a @_;
                   * mark tmps as such.

                       void    pad_tidy(padtidy_type type)

Functions in file pad.h
       CX_CURPAD_SAVE
               Save the current pad in the given context block structure.

                       void    CX_CURPAD_SAVE(struct context)

       CX_CURPAD_SV
               Access the SV at offset po in the saved current pad in the
               given context block structure (can be used as an lvalue).

                       SV *    CX_CURPAD_SV(struct context, PADOFFSET po)

       PAD_BASE_SV
               Get the value from slot "po" in the base (DEPTH=1) pad of a
               padlist

                       SV *    PAD_BASE_SV(PADLIST padlist, PADOFFSET po)

       PAD_CLONE_VARS
               Clone the state variables associated with running and compiling
               pads.

                       void    PAD_CLONE_VARS(PerlInterpreter *proto_perl, CLONE_PARAMS* param)
                       STRLEN  PAD_COMPNAME_GEN(PADOFFSET po)

       PAD_COMPNAME_GEN_set
               Sets the generation number of the name at offset "po" in the
               current ling pad (lvalue) to "gen".  Note that "SvUV_set" is
               hijacked for this purpose.

                       STRLEN  PAD_COMPNAME_GEN_set(PADOFFSET po, int gen)

       PAD_COMPNAME_OURSTASH
               Return the stash associated with an "our" variable.  Assumes
               the slot entry is a valid "our" lexical.

                       HV *    PAD_COMPNAME_OURSTASH(PADOFFSET po)

       PAD_COMPNAME_PV
               Return the name of the current compiling pad name at offset
               "po". Assumes a valid slot entry.

                       char *  PAD_COMPNAME_PV(PADOFFSET po)

       PAD_COMPNAME_TYPE
               Return the type (stash) of the current compiling pad name at
               offset "po". Must be a valid name. Returns null if not typed.

                       HV *    PAD_COMPNAME_TYPE(PADOFFSET po)

       PAD_DUP Clone a padlist.

                       void    PAD_DUP(PADLIST dstpad, PADLIST srcpad, CLONE_PARAMS* param)

       PAD_RESTORE_LOCAL
               Restore the old pad saved into the local variable opad by
               PAD_SAVE_LOCAL()

                       void    PAD_RESTORE_LOCAL(PAD *opad)

       PAD_SAVE_LOCAL
               Save the current pad to the local variable opad, then make the
               current pad equal to npad

                       void    PAD_SAVE_LOCAL(PAD *opad, PAD *npad)

       PAD_SAVE_SETNULLPAD
               Save the current pad then set it to null.

                       void    PAD_SAVE_SETNULLPAD()

       PAD_SETSV
               Set the slot at offset "po" in the current pad to "sv"

                       SV *    PAD_SETSV(PADOFFSET po, SV* sv)

       PAD_SET_CUR
               like PAD_SET_CUR, but without the save

                       void    PAD_SET_CUR_NOSAVE(PADLIST padlist, I32 n)

       PAD_SV  Get the value at offset "po" in the current pad

                       void    PAD_SV(PADOFFSET po)

       PAD_SVl Lightweight and lvalue version of "PAD_SV".  Get or set the
               value at offset "po" in the current pad.  Unlike "PAD_SV", does
               not print diagnostics with -DX.  For internal use only.

                       SV *    PAD_SVl(PADOFFSET po)

       SAVECLEARSV
               Clear the pointed to pad value on scope exit. (i.e. the runtime
               action of 'my')

                       void    SAVECLEARSV(SV **svp)

       SAVECOMPPAD
               save PL_comppad and PL_curpad

                       void    SAVECOMPPAD()

       SAVEPADSV
               Save a pad slot (used to restore after an iteration)

               XXX DAPM it would make more sense to make the arg a PADOFFSET
                    void SAVEPADSV(PADOFFSET po)

Functions in file pp_ctl.c
       docatch Check for the cases 0 or 3 of cur_env.je_ret, only used inside
               an eval context.

               0 is used as continue inside eval,

               3 is used for a die caught by an inner eval - continue inner
               loop

               See cop.h: je_mustcatch, when set at any runlevel to TRUE,
               means eval ops must establish a local jmpenv to handle
               exception traps.

                       OP*     docatch(OP *o)

GV Functions
       gv_try_downgrade
               If the typeglob "gv" can be expressed more succinctly, by
               having something other than a real GV in its place in the
               stash, replace it with the optimised form.  Basic requirements
               for this are that "gv" is a real typeglob, is sufficiently
               ordinary, and is only referenced from its package.  This
               function is meant to be used when a GV has been looked up in
               removed without notice.

                       void    gv_try_downgrade(GV* gv)

       is_gv_magical_sv
               Returns "TRUE" if given the name of a magical GV.

               Currently only useful internally when determining if a GV
               should be created even in rvalue contexts.

               "flags" is not used at present but available for future
               extension to allow selecting particular classes of magical
               variable.

               Currently assumes that "name" is NUL terminated (as well as len
               being valid).  This assumption is met by all callers within the
               perl core, which all pass pointers returned by SvPV.

                       bool    is_gv_magical_sv(SV *const name_sv, U32 flags)

Hash Manipulation Functions
       hv_ename_add
               Adds a name to a stash's internal list of effective names. See
               "hv_ename_delete".

               This is called when a stash is assigned to a new location in
               the symbol table.

                       void    hv_ename_add(HV *hv, const char *name, U32 len, U32 flags)

       hv_ename_delete
               Removes a name from a stash's internal list of effective names.
               If this is the name returned by "HvENAME", then another name in
               the list will take its place ("HvENAME" will use it).

               This is called when a stash is deleted from the symbol table.

                       void    hv_ename_delete(HV *hv, const char *name, U32 len, U32 flags)

       refcounted_he_chain_2hv
               Generates and returns a "HV *" representing the content of a
               "refcounted_he" chain.  flags is currently unused and must be
               zero.

                       HV *    refcounted_he_chain_2hv(const struct refcounted_he *c, U32 flags)

       refcounted_he_fetch_pv
               Like "refcounted_he_fetch_pvn", but takes a nul-terminated
               string instead of a string/length pair.

                       SV *    refcounted_he_fetch_pv(const struct refcounted_he *chain, const char *key, U32 hash, U32 flags)

       refcounted_he_fetch_pvn
               Search along a "refcounted_he" chain for an entry with the key
               Like "refcounted_he_fetch_pvn", but takes a literal string
               instead of a string/length pair, and no precomputed hash.

                       SV *    refcounted_he_fetch_pvs(const struct refcounted_he *chain, const char *key, U32 flags)

       refcounted_he_fetch_sv
               Like "refcounted_he_fetch_pvn", but takes a Perl scalar instead
               of a string/length pair.

                       SV *    refcounted_he_fetch_sv(const struct refcounted_he *chain, SV *key, U32 hash, U32 flags)

       refcounted_he_free
               Decrements the reference count of a "refcounted_he" by one.  If
               the reference count reaches zero the structure's memory is
               freed, which (recursively) causes a reduction of its parent
               "refcounted_he"'s reference count.  It is safe to pass a null
               pointer to this function: no action occurs in this case.

                       void    refcounted_he_free(struct refcounted_he *he)

       refcounted_he_inc
               Increment the reference count of a "refcounted_he".  The
               pointer to the "refcounted_he" is also returned.  It is safe to
               pass a null pointer to this function: no action occurs and a
               null pointer is returned.

                       struct refcounted_he *  refcounted_he_inc(struct refcounted_he *he)

       refcounted_he_new_pv
               Like "refcounted_he_new_pvn", but takes a nul-terminated string
               instead of a string/length pair.

                       struct refcounted_he *  refcounted_he_new_pv(struct refcounted_he *parent, const char *key, U32 hash, SV *value, U32 flags)

       refcounted_he_new_pvn
               Creates a new "refcounted_he".  This consists of a single
               key/value pair and a reference to an existing "refcounted_he"
               chain (which may be empty), and thus forms a longer chain.
               When using the longer chain, the new key/value pair takes
               precedence over any entry for the same key further along the
               chain.

               The new key is specified by keypv and keylen.  If flags has the
               "REFCOUNTED_HE_KEY_UTF8" bit set, the key octets are
               interpreted as UTF-8, otherwise they are interpreted as
               Latin-1.  hash is a precomputed hash of the key string, or zero
               if it has not been precomputed.

               value is the scalar value to store for this key.  value is
               copied by this function, which thus does not take ownership of
               any reference to it, and later changes to the scalar will not
               be reflected in the value visible in the "refcounted_he".
               Complex types of scalar will not be stored with referential
               integrity, but will be coerced to strings.  value may be either

       refcounted_he_new_pvs
               Like "refcounted_he_new_pvn", but takes a literal string
               instead of a string/length pair, and no precomputed hash.

                       struct refcounted_he *  refcounted_he_new_pvs(struct refcounted_he *parent, const char *key, SV *value, U32 flags)

       refcounted_he_new_sv
               Like "refcounted_he_new_pvn", but takes a Perl scalar instead
               of a string/length pair.

                       struct refcounted_he *  refcounted_he_new_sv(struct refcounted_he *parent, SV *key, U32 hash, SV *value, U32 flags)

IO Functions
       start_glob
               Function called by "do_readline" to spawn a glob (or do the
               glob inside perl on VMS). This code used to be inline, but now
               perl uses "File::Glob" this glob starter is only used by
               miniperl during the build process.  Moving it away shrinks
               pp_hot.c; shrinking pp_hot.c helps speed perl up.

               NOTE: this function is experimental and may change or be
               removed without notice.

                       PerlIO* start_glob(SV *tmpglob, IO *io)

Magical Functions
       magic_clearhint
               Triggered by a delete from %^H, records the key to
               "PL_compiling.cop_hints_hash".

                       int     magic_clearhint(SV* sv, MAGIC* mg)

       magic_clearhints
               Triggered by clearing %^H, resets
               "PL_compiling.cop_hints_hash".

                       int     magic_clearhints(SV* sv, MAGIC* mg)

       magic_methcall
               Invoke a magic method (like FETCH).

               * sv and mg are the tied thingy and the tie magic; * meth is
               the name of the method to call; * argc is the number of args
               (in addition to $self) to pass to the method;
                      the args themselves are any values following the argc
               argument.  * flags:
                   G_DISCARD:     invoke method with G_DISCARD flag and don't
               return a value
                   G_UNDEF_FILL:  fill the stack with argc pointers to
               PL_sv_undef.

               Returns the SV (if any) returned by the method, or NULL on
               failure.

               version of that SV. Container magic (eg %ENV, $1, tie) gets
               copied, value magic doesn't (eg taint, pos).

               If setmagic is false then no set magic will be called on the
               new (empty) SV.  This typically means that assignment will soon
               follow (e.g. 'local $x = $y'), and that will handle the magic.

                       void    mg_localize(SV* sv, SV* nsv, bool setmagic)

MRO Functions
       mro_get_linear_isa_dfs
               Returns the Depth-First Search linearization of @ISA the given
               stash.  The return value is a read-only AV*.  "level" should be
               0 (it is used internally in this function's recursion).

               You are responsible for "SvREFCNT_inc()" on the return value if
               you plan to store it anywhere semi-permanently (otherwise it
               might be deleted out from under you the next time the cache is
               invalidated).

                       AV*     mro_get_linear_isa_dfs(HV* stash, U32 level)

       mro_isa_changed_in
               Takes the necessary steps (cache invalidations, mostly) when
               the @ISA of the given package has changed.  Invoked by the
               "setisa" magic, should not need to invoke directly.

                       void    mro_isa_changed_in(HV* stash)

       mro_package_moved
               Call this function to signal to a stash that it has been
               assigned to another spot in the stash hierarchy. "stash" is the
               stash that has been assigned. "oldstash" is the stash it
               replaces, if any. "gv" is the glob that is actually being
               assigned to.

               This can also be called with a null first argument to indicate
               that "oldstash" has been deleted.

               This function invalidates isa caches on the old stash, on all
               subpackages nested inside it, and on the subclasses of all
               those, including non-existent packages that have corresponding
               entries in "stash".

               It also sets the effective names ("HvENAME") on all the stashes
               as appropriate.

               If the "gv" is present and is not in the symbol table, then
               this function simply returns. This checked will be skipped if
               "flags & 1".

                       void    mro_package_moved(HV * const stash, HV * const oldstash, const GV * const gv, U32 flags)

Pad Data Structures
               The CvPADLIST AV has does not have AvREAL set, so REFCNT of
               component items is managed "manual" (mostly in pad.c) rather
               than normal av.c rules.  The items in the AV are not SVs as for
               a normal AV, but other AVs:

               0'th Entry of the CvPADLIST is an AV which represents the
               "names" or rather the "static type information" for lexicals.

               The CvDEPTH'th entry of CvPADLIST AV is an AV which is the
               stack frame at that depth of recursion into the CV.  The 0'th
               slot of a frame AV is an AV which is @_.  other entries are
               storage for variables and op targets.

               During compilation: "PL_comppad_name" is set to the names AV.
               "PL_comppad" is set to the frame AV for the frame CvDEPTH == 1.
               "PL_curpad" is set to the body of the frame AV (i.e.
               AvARRAY(PL_comppad)).

               During execution, "PL_comppad" and "PL_curpad" refer to the
               live frame of the currently executing sub.

               Iterating over the names AV iterates over all possible pad
               items. Pad slots that are SVs_PADTMP (targets/GVs/constants)
               end up having &PL_sv_undef "names" (see pad_alloc()).

               Only my/our variable (SVs_PADMY/SVs_PADOUR) slots get valid
               names.  The rest are op targets/GVs/constants which are
               statically allocated or resolved at compile time.  These don't
               have names by which they can be looked up from Perl code at run
               time through eval"" like my/our variables can be.  Since they
               can't be looked up by "name" but only by their index allocated
               at compile time (which is usually in PL_op->op_targ), wasting a
               name SV for them doesn't make sense.

               The SVs in the names AV have their PV being the name of the
               variable.  xlow+1..xhigh inclusive in the NV union is a range
               of cop_seq numbers for which the name is valid (accessed
               through the macros COP_SEQ_RANGE_LOW and _HIGH).  During
               compilation, these fields may hold the special value
               PERL_PADSEQ_INTRO to indicate various stages:

                  COP_SEQ_RANGE_LOW        _HIGH
                  -----------------        -----
                  PERL_PADSEQ_INTRO            0   variable not yet introduced:   { my ($x
                  valid-seq#   PERL_PADSEQ_INTRO   variable in scope:             { my ($x)
                  valid-seq#          valid-seq#   compilation of scope complete: { my ($x) }

               For typed lexicals name SV is SVt_PVMG and SvSTASH points at
               the type.  For "our" lexicals, the type is also SVt_PVMG, with
               the SvOURSTASH slot pointing at the stash of the associated
               global (so that duplicate "our" declarations in the same
               package can be detected).  SvUVX is sometimes hijacked to store
               the generation number during compilation.

               not a meaningful combination currently but could become so if
               "my sub foo {}" is implemented.)

               Note that formats are treated as anon subs, and are cloned each
               time write is called (if necessary).

               The flag SVs_PADSTALE is cleared on lexicals each time the my()
               is executed, and set on scope exit. This allows the 'Variable
               $x is not available' warning to be generated in evals, such as

                   { my $x = 1; sub f { eval '$x'} } f();

               For state vars, SVs_PADSTALE is overloaded to mean 'not yet
               initialised'

                       AV *    CvPADLIST(CV *cv)

       pad_new Create a new compiling padlist, saving and updating the various
               global vars at the same time as creating the pad itself. The
               following flags can be OR'ed together:

                   padnew_CLONE        this pad is for a cloned CV
                   padnew_SAVE         save old globals
                   padnew_SAVESUB      also save extra stuff for start of sub

                       PADLIST*        pad_new(int flags)

Per-Interpreter Variables
       PL_DBsingle
               When Perl is run in debugging mode, with the -d switch, this SV
               is a boolean which indicates whether subs are being single-
               stepped.  Single-stepping is automatically turned on after
               every step.  This is the C variable which corresponds to Perl's
               $DB::single variable.  See "PL_DBsub".

                       SV *    PL_DBsingle

       PL_DBsub
               When Perl is run in debugging mode, with the -d switch, this GV
               contains the SV which holds the name of the sub being debugged.
               This is the C variable which corresponds to Perl's $DB::sub
               variable.  See "PL_DBsingle".

                       GV *    PL_DBsub

       PL_DBtrace
               Trace variable used when Perl is run in debugging mode, with
               the -d switch.  This is the C variable which corresponds to
               Perl's $DB::trace variable.  See "PL_DBsingle".

                       SV *    PL_DBtrace

       PL_dowarn
               The C variable which corresponds to Perl's $^W warning
               space.

                       GV*     PL_ofsgv

       PL_rs   The input record separator - $/ in Perl space.

                       SV*     PL_rs

Stack Manipulation Macros
       djSP    Declare Just "SP". This is actually identical to "dSP", and
               declares a local copy of perl's stack pointer, available via
               the "SP" macro.  See "SP".  (Available for backward source code
               compatibility with the old (Perl 5.005) thread model.)

                               djSP;

       LVRET   True if this op will be the return value of an lvalue
               subroutine

SV Manipulation Functions
       sv_add_arena
               Given a chunk of memory, link it to the head of the list of
               arenas, and split it into a list of free SVs.

                       void    sv_add_arena(char *const ptr, const U32 size, const U32 flags)

       sv_clean_all
               Decrement the refcnt of each remaining SV, possibly triggering
               a cleanup. This function may have to be called multiple times
               to free SVs which are in complex self-referential hierarchies.

                       I32     sv_clean_all()

       sv_clean_objs
               Attempt to destroy all objects not yet freed

                       void    sv_clean_objs()

       sv_free_arenas
               Deallocate the memory used by all arenas. Note that all the
               individual SV heads and bodies within the arenas must already
               have been freed.

                       void    sv_free_arenas()

SV-Body Allocation
       sv_2num Return an SV with the numeric value of the source SV, doing any
               necessary reference or overload conversion.  You must use the
               "SvNUM(sv)" macro to access this function.

               NOTE: this function is experimental and may change or be
               removed without notice.

                       SV*     sv_2num(SV *const sv)

               The name is returned as a mortal SV.

               Assumes that PL_op is the op that originally triggered the
               error, and that PL_comppad/PL_curpad points to the currently
               executing pad.

               NOTE: this function is experimental and may change or be
               removed without notice.

                       SV*     find_uninit_var(const OP *const obase, const SV *const uninit_sv, bool top)

       report_uninit
               Print appropriate "Use of uninitialized variable" warning

                       void    report_uninit(const SV *uninit_sv)

Undocumented functions
       The following functions have been flagged as part of the public API,
       but are currently undocumented. Use them at your own risk, as the
       interfaces are subject to change.

       If you use one of them, you may wish to consider creating and
       submitting documentation for it. If your patch is accepted, this will
       indicate that the interface is stable (unless it is explicitly marked
       otherwise).

       F0convert
       Slab_to_rw
       _append_range_to_invlist
       _new_invlist
       _swash_inversion_hash
       _swash_to_invlist
       add_alternate
       add_cp_to_invlist
       add_data
       add_range_to_invlist
       add_utf16_textfilter
       addmad
       allocmy
       amagic_cmp
       amagic_cmp_locale
       amagic_i_ncmp
       amagic_ncmp
       anonymise_cv_maybe
       ao
       append_madprops
       apply
       apply_attrs
       apply_attrs_my
       assert_uft8_cache_coherent
       av_reify
       bad_type
       bind_match
       ckwarn_common
       cl_and
       cl_anything
       cl_init
       cl_is_anything
       cl_or
       clear_placeholders
       closest_cop
       convert
       cop_free
       cr_textfilter
       create_eval_scope
       curmad
       curse
       cv_ckproto_len
       cvgv_set
       cvstash_set
       deb_curcv
       deb_stack_all
       deb_stack_n
       debprof
       debug_start_match
       del_sv
       delete_eval_scope
       deprecate_commaless_var_list
       destroy_matcher
       die_unwind
       div128
       do_aexec
       do_aexec5
       do_chomp
       do_delete_local
       do_eof
       do_exec
       do_exec3
       do_execfree
       do_ipcctl
       do_ipcget
       do_msgrcv
       do_msgsnd
       do_oddball
       do_op_xmldump
       do_pmop_xmldump
       do_print
       do_readline
       do_seek
       do_semop
       do_shmio
       do_smartmatch
       do_sysseek
       do_tell
       do_trans
       do_trans_complex
       do_trans_complex_utf8
       doopen_pm
       doparseform
       dopoptoeval
       dopoptogiven
       dopoptolabel
       dopoptoloop
       dopoptosub_at
       dopoptowhen
       dump_all_perl
       dump_exec_pos
       dump_packsubs_perl
       dump_sub_perl
       dump_sv_child
       dump_trie
       dump_trie_interim_list
       dump_trie_interim_table
       dumpuntil
       dup_attrlist
       emulate_cop_io
       exec_failed
       expect_number
       feature_is_enabled
       filter_gets
       find_and_forget_pmops
       find_array_subscript
       find_beginning
       find_byclass
       find_hash_subscript
       find_in_my_stash
       find_script
       first_symbol
       fold_constants
       forbid_setid
       force_ident
       force_list
       force_next
       force_strict_version
       force_version
       force_word
       forget_pmop
       free_tied_hv_pool
       gen_constant_list
       get_aux_mg
       get_db_sub
       get_debug_opts
       get_hash_seed
       get_no_modify
       get_num
       get_opargs
       get_re_arg
       getenv_len
       glob_2number
       glob_assign_glob
       glob_assign_ref
       hv_delete_common
       hv_kill_backrefs
       hv_magic_check
       hv_notallowed
       hv_undef_flags
       incline
       incpush
       incpush_if_exists
       incpush_use_sep
       ingroup
       init_argv_symbols
       init_dbargs
       init_debugger
       init_ids
       init_interp
       init_main_stash
       init_perllib
       init_postdump_symbols
       init_predump_symbols
       intuit_method
       intuit_more
       invert
       invlist_array
       invlist_destroy
       invlist_extend
       invlist_intersection
       invlist_len
       invlist_max
       invlist_set_len
       invlist_set_max
       invlist_trim
       invlist_union
       invoke_exception_hook
       io_close
       is_an_int
       is_handle_constructor
       is_inplace_av
       is_list_assignment
       is_utf8_X_L
       is_utf8_X_LV
       is_utf8_X_LVT
       is_utf8_X_LV_LVT_V
       is_utf8_X_T
       is_utf8_X_V
       is_utf8_X_begin
       is_utf8_X_extend
       is_utf8_X_non_hangul
       is_utf8_X_prepend
       is_utf8_char_slow
       is_utf8_common
       isa_lookup
       jmaybe
       join_exact
       keyword
       magic_clearpack
       magic_clearsig
       magic_existspack
       magic_freearylen_p
       magic_freeovrld
       magic_get
       magic_getarylen
       magic_getdefelem
       magic_getnkeys
       magic_getpack
       magic_getpos
       magic_getsig
       magic_getsubstr
       magic_gettaint
       magic_getuvar
       magic_getvec
       magic_killbackrefs
       magic_len
       magic_methcall1
       magic_methpack
       magic_nextpack
       magic_regdata_cnt
       magic_regdatum_get
       magic_regdatum_set
       magic_scalarpack
       magic_set
       magic_set_all_env
       magic_setamagic
       magic_setarylen
       magic_setcollxfrm
       magic_setdbline
       magic_setdefelem
       magic_setenv
       magic_setisa
       magic_setmglob
       magic_setnkeys
       magic_setpack
       magic_setpos
       magic_setregexp
       magic_setsig
       magic_setsubstr
       magic_settaint
       magic_setutf8
       magic_setuvar
       magic_setvec
       magic_sizepack
       magic_wipepack
       make_matcher
       make_trie
       make_trie_failtable
       malloc_good_size
       malloced_size
       matcher_matches_sv
       measure_struct
       mro_meta_dup
       mro_meta_init
       mul128
       mulexp10
       munge_qwlist_to_paren_list
       my_attrs
       my_betoh16
       my_betoh32
       my_betoh64
       my_betohi
       my_betohl
       my_betohs
       my_clearenv
       my_exit_jump
       my_htobe16
       my_htobe32
       my_htobe64
       my_htobei
       my_htobel
       my_htobes
       my_htole16
       my_htole32
       my_htole64
       my_htolei
       my_htolel
       my_htoles
       my_kid
       my_letoh16
       my_letoh32
       my_letoh64
       my_letohi
       my_letohl
       my_letohs
       my_lstat_flags
       my_stat_flags
       my_swabn
       my_unexec
       need_utf8
       newDEFSVOP
       newGIVWHENOP
       newGP
       newMADPROP
       newMADsv
       newTOKEN
       new_constant
       new_he
       new_logop
       new_warnings_bitfield
       next_symbol
       nextargv
       nextchar
       no_bareword_allowed
       no_fh_allowed
       no_op
       open_script
       opt_scalarhv
       pack_rec
       package
       package_version
       pad_add_name_sv
       pad_compname_type
       pad_peg
       padlist_dup
       parse_body
       parse_unicode_opts
       parser_free
       path_is_absolute
       peep
       pending_Slabs_to_ro
       pidgone
       pm_description
       pmop_xmldump
       pmruntime
       pmtrans
       populate_isa
       prepend_madprops
       printbuf
       process_special_blocks
       ptr_table_find
       put_byte
       qerror
       qsortsvu
       re_croak2
       readpipe_override
       ref_array_or_hash
       refcounted_he_value
       refkids
       refto
       reg
       reg_check_named_buff_matched
       reg_named_buff
       reg_named_buff_iter
       reg_namedseq
       reg_node
       reg_numbered_buff_fetch
       reg_numbered_buff_length
       reg_numbered_buff_store
       reg_qr_package
       reg_recode
       reg_scan_name
       reg_skipcomment
       reg_temp_copy
       reganode
       regatom
       regbranch
       regclass
       regcppop
       regcppush
       regtail
       regtail_study
       regtry
       reguni
       regwhite
       report_evil_fh
       report_wrongway_fh
       require_tie_mod
       restore_magic
       rpeep
       rsignal_restore
       rsignal_save
       run_body
       run_user_filter
       rxres_free
       rxres_restore
       rxres_save
       same_dirent
       save_hek_flags
       save_lines
       save_magic
       save_pushptri32ptr
       save_scalar_at
       sawparens
       scalar
       scalar_mod_type
       scalarboolean
       scalarkids
       scalarseq
       scalarvoid
       scan_commit
       scan_const
       scan_formline
       scan_heredoc
       scan_ident
       scan_inputsymbol
       scan_pat
       scan_str
       scan_subst
       scan_trans
       scan_word
       search_const
       sequence
       sequence_num
       sequence_tail
       set_regclass_bit
       set_regclass_bit_fold
       share_hek_flags
       sighandler
       simplify_sort
       skipspace
       skipspace0
       skipspace1
       skipspace2
       sublex_push
       sublex_start
       sv_2iuv_common
       sv_2iuv_non_preserve
       sv_add_backref
       sv_catxmlpv
       sv_catxmlpvn
       sv_catxmlsv
       sv_compile_2op_is_broken
       sv_del_backref
       sv_dup_common
       sv_dup_inc_multiple
       sv_exp_grow
       sv_free2
       sv_i_ncmp
       sv_kill_backrefs
       sv_ncmp
       sv_pos_b2u_midway
       sv_pos_u2b_cached
       sv_pos_u2b_forwards
       sv_pos_u2b_midway
       sv_release_COW
       sv_setsv_cow
       sv_unglob
       sv_xmlpeek
       swallow_bom
       swash_get
       tied_method
       to_byte_substr
       to_utf8_substr
       token_free
       token_getmad
       tokenize_use
       tokeq
       tokereport
       too_few_arguments
       too_many_arguments
       try_amagic_bin
       try_amagic_un
       uiv_2buf
       unpack_rec
       unreferenced_to_tmp_stack
       unshare_hek
       unshare_hek_or_pvn
       unwind_handler_stack
       update_debugger_info
       usage
       utf16_textfilter
       utf8_mg_len_cache_update
       utf8_mg_pos_cache_update
       utilize
       validate_suid
       varname
       visit
       xmldump_indent
       xmldump_packsubs
       xmldump_packsubs_perl
       xmldump_sub
       xmldump_sub_perl
       xmldump_vindent
       xs_apiversion_bootcheck
       xs_version_bootcheck
       yyerror
       yylex
       yyparse
       yyunlex
       yywarn

AUTHORS
       The autodocumentation system was originally added to the Perl core by
       Benjamin Stuhl. Documentation is by whoever was kind enough to document
       their functions.

SEE ALSO
       perlguts, perlapi



perl v5.14.2                      2016-03-01                     PERLINTERN(1)
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