xref: /openbsd/gnu/usr.bin/perl/regen/embed.pl (revision 097a140d) 
1#!/usr/bin/perl -w
2#
3# Regenerate (overwriting only if changed):
4#
5#    embed.h
6#    embedvar.h
7#    perlapi.c
8#    perlapi.h
9#    proto.h
10#
11# from information stored in
12#
13#    embed.fnc
14#    intrpvar.h
15#    perlvars.h
16#    regen/opcodes
17#
18# Accepts the standard regen_lib -q and -v args.
19#
20# This script is normally invoked from regen.pl.
21
22require 5.004;	# keep this compatible, an old perl is all we may have before
23                # we build the new one
24
25use strict;
26
27BEGIN {
28    # Get function prototypes
29    require './regen/regen_lib.pl';
30    require './regen/embed_lib.pl';
31}
32
33my $unflagged_pointers;
34
35#
36# See database of global and static function prototypes in embed.fnc
37# This is used to generate prototype headers under various configurations,
38# export symbols lists for different platforms, and macros to provide an
39# implicit interpreter context argument.
40#
41
42my $error_count = 0;
43sub die_at_end ($) { # Keeps going for now, but makes sure the regen doesn't
44                     # succeed.
45    warn shift;
46    $error_count++;
47}
48
49sub full_name ($$) { # Returns the function name with potentially the
50		     # prefixes 'S_' or 'Perl_'
51    my ($func, $flags) = @_;
52
53    return "Perl_$func" if $flags =~ /p/;
54    return "S_$func" if $flags =~ /[SIi]/;
55    return $func;
56}
57
58sub open_print_header {
59    my ($file, $quote) = @_;
60
61    return open_new($file, '>',
62		    { file => $file, style => '*', by => 'regen/embed.pl',
63		      from => ['data in embed.fnc', 'regen/embed.pl',
64			       'regen/opcodes', 'intrpvar.h', 'perlvars.h'],
65		      final => "\nEdit those files and run 'make regen_headers' to effect changes.\n",
66		      copyright => [1993 .. 2009], quote => $quote });
67}
68
69my ($embed, $core, $ext, $api) = setup_embed();
70
71# generate proto.h
72{
73    my $pr = open_print_header("proto.h");
74    print $pr "START_EXTERN_C\n";
75    my $ret;
76
77    foreach (@$embed) {
78	if (@$_ == 1) {
79	    print $pr "$_->[0]\n";
80	    next;
81	}
82
83	my ($flags,$retval,$plain_func,@args) = @$_;
84        if ($flags =~ / ( [^AabCDdEefFGhIiMmNnOoPpRrSsTUuWXx] ) /x) {
85	    die_at_end "flag $1 is not legal (for function $plain_func)";
86	}
87	my @nonnull;
88	my $args_assert_line = ( $flags !~ /G/ );
89        my $has_depth = ( $flags =~ /W/ );
90	my $has_context = ( $flags !~ /T/ );
91	my $never_returns = ( $flags =~ /r/ );
92	my $binarycompat = ( $flags =~ /b/ );
93	my $commented_out = ( $flags =~ /m/ );
94	my $is_malloc = ( $flags =~ /a/ );
95	my $can_ignore = ( $flags !~ /R/ ) && ( $flags !~ /P/ ) && !$is_malloc;
96	my @names_of_nn;
97	my $func;
98
99	if (! $can_ignore && $retval eq 'void') {
100	    warn "It is nonsensical to require the return value of a void function ($plain_func) to be checked";
101	}
102
103	die_at_end "$plain_func: S and p flags are mutually exclusive"
104					    if $flags =~ /S/ && $flags =~ /p/;
105	die_at_end "$plain_func: m and $1 flags are mutually exclusive"
106					if $flags =~ /m/ && $flags =~ /([pS])/;
107
108	die_at_end "$plain_func: u flag only usable with m" if $flags =~ /u/
109							    && $flags !~ /m/;
110
111	my $static_inline = 0;
112	if ($flags =~ /([SIi])/) {
113	    my $type;
114	    if ($never_returns) {
115		$type = {
116		    'S' => 'PERL_STATIC_NO_RET',
117		    'i' => 'PERL_STATIC_INLINE_NO_RET',
118		    'I' => 'PERL_STATIC_FORCE_INLINE_NO_RET'
119		}->{$1};
120	    }
121	    else {
122		$type = {
123		    'S' => 'STATIC',
124		    'i' => 'PERL_STATIC_INLINE',
125		    'I' => 'PERL_STATIC_FORCE_INLINE'
126		}->{$1};
127	    }
128	    $retval = "$type $retval";
129	    die_at_end "Don't declare static function '$plain_func' pure" if $flags =~ /P/;
130	    $static_inline = $type =~ /^PERL_STATIC(?:_FORCE)?_INLINE/;
131	}
132	else {
133	    if ($never_returns) {
134		$retval = "PERL_CALLCONV_NO_RET $retval";
135	    }
136	    else {
137		$retval = "PERL_CALLCONV $retval";
138	    }
139	}
140
141	die_at_end "For '$plain_func', M flag requires p flag"
142					    if $flags =~ /M/ && $flags !~ /p/;
143	die_at_end "For '$plain_func', C flag requires one of [pIimb] flags"
144					    if $flags =~ /C/ && $flags !~ /[Iibmp]/;
145	die_at_end "For '$plain_func', X flag requires one of [Iip] flags"
146					    if $flags =~ /X/ && $flags !~ /[Iip]/;
147	die_at_end "For '$plain_func', X and m flags are mutually exclusive"
148					    if $flags =~ /X/ && $flags =~ /m/;
149	die_at_end "For '$plain_func', [Ii] with [ACX] requires p flag"
150			if $flags =~ /[Ii]/ && $flags =~ /[ACX]/ && $flags !~ /p/;
151	die_at_end "For '$plain_func', b and m flags are mutually exclusive"
152	         . " (try M flag)" if $flags =~ /b/ && $flags =~ /m/;
153	die_at_end "For '$plain_func', b flag without M flag requires D flag"
154			    if $flags =~ /b/ && $flags !~ /M/ && $flags !~ /D/;
155	die_at_end "For '$plain_func', I and i flags are mutually exclusive"
156					    if $flags =~ /I/ && $flags =~ /i/;
157
158	$func = full_name($plain_func, $flags);
159	$ret = "";
160	$ret .= "$retval\t$func(";
161	if ( $has_context ) {
162	    $ret .= @args ? "pTHX_ " : "pTHX";
163	}
164	if (@args) {
165	    die_at_end "n flag is contradicted by having arguments"
166								if $flags =~ /n/;
167	    my $n;
168	    for my $arg ( @args ) {
169		++$n;
170		if ( $arg =~ /\*/ && $arg !~ /\b(NN|NULLOK)\b/ ) {
171		    warn "$func: $arg needs NN or NULLOK\n";
172		    ++$unflagged_pointers;
173		}
174		my $nn = ( $arg =~ s/\s*\bNN\b\s+// );
175		push( @nonnull, $n ) if $nn;
176
177		my $nullok = ( $arg =~ s/\s*\bNULLOK\b\s+// ); # strip NULLOK with no effect
178
179		# Make sure each arg has at least a type and a var name.
180		# An arg of "int" is valid C, but want it to be "int foo".
181		my $temp_arg = $arg;
182		$temp_arg =~ s/\*//g;
183		$temp_arg =~ s/\s*\bstruct\b\s*/ /g;
184		if ( ($temp_arg ne "...")
185		     && ($temp_arg !~ /\w+\s+(\w+)(?:\[\d+\])?\s*$/) ) {
186		    die_at_end "$func: $arg ($n) doesn't have a name\n";
187		}
188		if (defined $1 && $nn && !($commented_out && !$binarycompat)) {
189		    push @names_of_nn, $1;
190		}
191	    }
192	    $ret .= join ", ", @args;
193	}
194	else {
195	    $ret .= "void" if !$has_context;
196	}
197        $ret .= " _pDEPTH" if $has_depth;
198	$ret .= ")";
199	my @attrs;
200	if ( $flags =~ /r/ ) {
201	    push @attrs, "__attribute__noreturn__";
202	}
203	if ( $flags =~ /D/ ) {
204	    push @attrs, "__attribute__deprecated__";
205	}
206	if ( $is_malloc ) {
207	    push @attrs, "__attribute__malloc__";
208	}
209	if ( !$can_ignore ) {
210	    push @attrs, "__attribute__warn_unused_result__";
211	}
212	if ( $flags =~ /P/ ) {
213	    push @attrs, "__attribute__pure__";
214	}
215	if ( $flags =~ /I/ ) {
216	    push @attrs, "__attribute__always_inline__";
217	}
218	if( $flags =~ /f/ ) {
219	    my $prefix	= $has_context ? 'pTHX_' : '';
220	    my ($args, $pat);
221	    if ($args[-1] eq '...') {
222		$args	= scalar @args;
223		$pat	= $args - 1;
224		$args	= $prefix . $args;
225	    }
226	    else {
227		# don't check args, and guess which arg is the pattern
228		# (one of 'fmt', 'pat', 'f'),
229		$args = 0;
230		my @fmts = grep $args[$_] =~ /\b(f|pat|fmt)$/, 0..$#args;
231		if (@fmts != 1) {
232		    die "embed.pl: '$plain_func': can't determine pattern arg\n";
233		}
234		$pat = $fmts[0] + 1;
235	    }
236	    my $macro	= grep($_ == $pat, @nonnull)
237				? '__attribute__format__'
238				: '__attribute__format__null_ok__';
239	    if ($plain_func =~ /strftime/) {
240		push @attrs, sprintf "%s(__strftime__,%s1,0)", $macro, $prefix;
241	    }
242	    else {
243		push @attrs, sprintf "%s(__printf__,%s%d,%s)", $macro,
244				    $prefix, $pat, $args;
245	    }
246	}
247	elsif ((grep { $_ eq '...' } @args) && $flags !~ /F/) {
248	    die_at_end "$plain_func: Function with '...' arguments must have"
249	             . " f or F flag";
250	}
251	if ( @attrs ) {
252	    $ret .= "\n";
253	    $ret .= join( "\n", map { "\t\t\t$_" } @attrs );
254	}
255	$ret .= ";";
256	$ret = "/* $ret */" if $commented_out;
257
258	$ret .= "\n#define PERL_ARGS_ASSERT_\U$plain_func\E"
259					    if $args_assert_line || @names_of_nn;
260	$ret .= "\t\\\n\t" . join '; ', map "assert($_)", @names_of_nn
261								if @names_of_nn;
262
263	$ret = "#ifndef PERL_NO_INLINE_FUNCTIONS\n$ret\n#endif" if $static_inline;
264	$ret = "#ifndef NO_MATHOMS\n$ret\n#endif" if $binarycompat;
265	$ret .= @attrs ? "\n\n" : "\n";
266
267	print $pr $ret;
268    }
269
270    print $pr <<'EOF';
271#ifdef PERL_CORE
272#  include "pp_proto.h"
273#endif
274END_EXTERN_C
275EOF
276
277    read_only_bottom_close_and_rename($pr) if ! $error_count;
278}
279
280die_at_end "$unflagged_pointers pointer arguments to clean up\n" if $unflagged_pointers;
281
282sub readvars {
283    my ($file, $pre) = @_;
284    local (*FILE, $_);
285    my %seen;
286    open(FILE, '<', $file)
287	or die "embed.pl: Can't open $file: $!\n";
288    while (<FILE>) {
289	s/[ \t]*#.*//;		# Delete comments.
290	if (/PERLVARA?I?C?\($pre,\s*(\w+)/) {
291	    die_at_end "duplicate symbol $1 while processing $file line $.\n"
292		if $seen{$1}++;
293	}
294    }
295    close(FILE);
296    return sort keys %seen;
297}
298
299my @intrp = readvars 'intrpvar.h','I';
300my @globvar = readvars 'perlvars.h','G';
301
302sub hide {
303    my ($from, $to, $indent) = @_;
304    $indent = '' unless defined $indent;
305    my $t = int(length("$indent$from") / 8);
306    "#${indent}define $from" . "\t" x ($t < 3 ? 3 - $t : 1) . "$to\n";
307}
308
309sub multon ($$$) {
310    my ($sym,$pre,$ptr) = @_;
311    hide("PL_$sym", "($ptr$pre$sym)");
312}
313
314my $em = open_print_header('embed.h');
315
316print $em <<'END';
317/* (Doing namespace management portably in C is really gross.) */
318
319/* By defining PERL_NO_SHORT_NAMES (not done by default) the short forms
320 * (like warn instead of Perl_warn) for the API are not defined.
321 * Not defining the short forms is a good thing for cleaner embedding. */
322
323#ifndef PERL_NO_SHORT_NAMES
324
325/* Hide global symbols */
326
327END
328
329my @az = ('a'..'z');
330
331sub embed_h {
332    my ($guard, $funcs) = @_;
333    print $em "$guard\n" if $guard;
334
335    my $lines;
336    foreach (@$funcs) {
337	if (@$_ == 1) {
338	    my $cond = $_->[0];
339	    # Indent the conditionals if we are wrapped in an #if/#endif pair.
340	    $cond =~ s/#(.*)/#  $1/ if $guard;
341	    $lines .= "$cond\n";
342	    next;
343	}
344	my $ret = "";
345	my ($flags,$retval,$func,@args) = @$_;
346	unless ($flags =~ /[omM]/) {
347	    my $args = scalar @args;
348	    if ($flags =~ /T/) {
349		my $full_name = full_name($func, $flags);
350		next if $full_name eq $func;	# Don't output a no-op.
351		$ret = hide($func, $full_name);
352	    }
353	    elsif ($args and $args[$args-1] =~ /\.\.\./) {
354		if ($flags =~ /p/) {
355		    # we're out of luck for varargs functions under CPP
356		    # So we can only do these macros for no implicit context:
357		    $ret = "#ifndef PERL_IMPLICIT_CONTEXT\n"
358			. hide($func, full_name($func, $flags)) . "#endif\n";
359		}
360	    }
361	    else {
362		my $alist = join(",", @az[0..$args-1]);
363		$ret = "#define $func($alist)";
364		my $t = int(length($ret) / 8);
365		$ret .=  "\t" x ($t < 4 ? 4 - $t : 1);
366		$ret .= full_name($func, $flags) . "(aTHX";
367		$ret .= "_ " if $alist;
368                $ret .= $alist;
369                if ($flags =~ /W/) {
370                    if ($alist) {
371                        $ret .= " _aDEPTH";
372                    } else {
373                        die "Can't use W without other args (currently)";
374                    }
375                }
376                $ret .= ")\n";
377	    }
378	    $ret = "#ifndef NO_MATHOMS\n$ret#endif\n" if $flags =~ /b/;
379	}
380	$lines .= $ret;
381    }
382    # Prune empty #if/#endif pairs.
383    while ($lines =~ s/#\s*if[^\n]+\n#\s*endif\n//) {
384    }
385    # Merge adjacent blocks.
386    while ($lines =~ s/(#ifndef PERL_IMPLICIT_CONTEXT
387[^\n]+
388)#endif
389#ifndef PERL_IMPLICIT_CONTEXT
390/$1/) {
391    }
392
393    print $em $lines;
394    print $em "#endif\n" if $guard;
395}
396
397embed_h('', $api);
398embed_h('#if defined(PERL_CORE) || defined(PERL_EXT)', $ext);
399embed_h('#ifdef PERL_CORE', $core);
400
401print $em <<'END';
402
403#endif	/* #ifndef PERL_NO_SHORT_NAMES */
404
405/* Compatibility stubs.  Compile extensions with -DPERL_NOCOMPAT to
406   disable them.
407 */
408
409#if !defined(PERL_CORE)
410#  define sv_setptrobj(rv,ptr,name)	sv_setref_iv(rv,name,PTR2IV(ptr))
411#  define sv_setptrref(rv,ptr)		sv_setref_iv(rv,NULL,PTR2IV(ptr))
412#endif
413
414#if !defined(PERL_CORE) && !defined(PERL_NOCOMPAT)
415
416/* Compatibility for various misnamed functions.  All functions
417   in the API that begin with "perl_" (not "Perl_") take an explicit
418   interpreter context pointer.
419   The following are not like that, but since they had a "perl_"
420   prefix in previous versions, we provide compatibility macros.
421 */
422#  define perl_atexit(a,b)		call_atexit(a,b)
423END
424
425foreach (@$embed) {
426    my ($flags, $retval, $func, @args) = @$_;
427    next unless $func;
428    next unless $flags =~ /O/;
429
430    my $alist = join ",", @az[0..$#args];
431    my $ret = "#  define perl_$func($alist)";
432    my $t = (length $ret) >> 3;
433    $ret .=  "\t" x ($t < 5 ? 5 - $t : 1);
434    print $em "$ret$func($alist)\n";
435}
436
437my @nocontext;
438{
439    my (%has_va, %has_nocontext);
440    foreach (@$embed) {
441	next unless @$_ > 1;
442	++$has_va{$_->[2]} if $_->[-1] =~ /\.\.\./;
443	++$has_nocontext{$1} if $_->[2] =~ /(.*)_nocontext/;
444    }
445
446    @nocontext = sort grep {
447	$has_nocontext{$_}
448	    && !/printf/ # Not clear to me why these are skipped but they are.
449    } keys %has_va;
450}
451
452print $em <<'END';
453
454/* varargs functions can't be handled with CPP macros. :-(
455   This provides a set of compatibility functions that don't take
456   an extra argument but grab the context pointer using the macro
457   dTHX.
458 */
459#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_NO_SHORT_NAMES)
460END
461
462foreach (@nocontext) {
463    print $em hide($_, "Perl_${_}_nocontext", "  ");
464}
465
466print $em <<'END';
467#endif
468
469#endif /* !defined(PERL_CORE) && !defined(PERL_NOCOMPAT) */
470
471#if !defined(PERL_IMPLICIT_CONTEXT)
472/* undefined symbols, point them back at the usual ones */
473END
474
475foreach (@nocontext) {
476    print $em hide("Perl_${_}_nocontext", "Perl_$_", "  ");
477}
478
479print $em <<'END';
480#endif
481END
482
483read_only_bottom_close_and_rename($em) if ! $error_count;
484
485$em = open_print_header('embedvar.h');
486
487print $em <<'END';
488/* (Doing namespace management portably in C is really gross.) */
489
490/*
491   The following combinations of MULTIPLICITY and PERL_IMPLICIT_CONTEXT
492   are supported:
493     1) none
494     2) MULTIPLICITY	# supported for compatibility
495     3) MULTIPLICITY && PERL_IMPLICIT_CONTEXT
496
497   All other combinations of these flags are errors.
498
499   only #3 is supported directly, while #2 is a special
500   case of #3 (supported by redefining vTHX appropriately).
501*/
502
503#if defined(MULTIPLICITY)
504/* cases 2 and 3 above */
505
506#  if defined(PERL_IMPLICIT_CONTEXT)
507#    define vTHX	aTHX
508#  else
509#    define vTHX	PERL_GET_INTERP
510#  endif
511
512END
513
514my $sym;
515
516for $sym (@intrp) {
517    if ($sym eq 'sawampersand') {
518	print $em "#ifndef PL_sawampersand\n";
519    }
520    print $em multon($sym,'I','vTHX->');
521    if ($sym eq 'sawampersand') {
522	print $em "#endif\n";
523    }
524}
525
526print $em <<'END';
527
528#endif	/* MULTIPLICITY */
529
530#if defined(PERL_GLOBAL_STRUCT)
531
532END
533
534for $sym (@globvar) {
535    print $em "#ifdef OS2\n" if $sym eq 'sh_path';
536    print $em "#ifdef __VMS\n" if $sym eq 'perllib_sep';
537    print $em multon($sym,   'G','my_vars->');
538    print $em multon("G$sym",'', 'my_vars->');
539    print $em "#endif\n" if $sym eq 'sh_path';
540    print $em "#endif\n" if $sym eq 'perllib_sep';
541}
542
543print $em <<'END';
544
545#endif /* PERL_GLOBAL_STRUCT */
546END
547
548read_only_bottom_close_and_rename($em) if ! $error_count;
549
550my $capih = open_print_header('perlapi.h');
551
552print $capih <<'EOT';
553/* declare accessor functions for Perl variables */
554#ifndef __perlapi_h__
555#define __perlapi_h__
556
557#if defined (MULTIPLICITY) && defined (PERL_GLOBAL_STRUCT)
558
559START_EXTERN_C
560
561#undef PERLVAR
562#undef PERLVARA
563#undef PERLVARI
564#undef PERLVARIC
565#define PERLVAR(p,v,t)	EXTERN_C t* Perl_##p##v##_ptr(pTHX);
566#define PERLVARA(p,v,n,t)	typedef t PL_##v##_t[n];		\
567			EXTERN_C PL_##v##_t* Perl_##p##v##_ptr(pTHX);
568#define PERLVARI(p,v,t,i)	PERLVAR(p,v,t)
569#define PERLVARIC(p,v,t,i) PERLVAR(p,v, const t)
570
571#include "perlvars.h"
572
573#undef PERLVAR
574#undef PERLVARA
575#undef PERLVARI
576#undef PERLVARIC
577
578END_EXTERN_C
579
580#if defined(PERL_CORE)
581
582/* accessor functions for Perl "global" variables */
583
584/* these need to be mentioned here, or most linkers won't put them in
585   the perl executable */
586
587#ifndef PERL_NO_FORCE_LINK
588
589START_EXTERN_C
590
591#ifndef DOINIT
592EXTCONST void * const PL_force_link_funcs[];
593#else
594EXTCONST void * const PL_force_link_funcs[] = {
595#undef PERLVAR
596#undef PERLVARA
597#undef PERLVARI
598#undef PERLVARIC
599#define PERLVAR(p,v,t)		(void*)Perl_##p##v##_ptr,
600#define PERLVARA(p,v,n,t)	PERLVAR(p,v,t)
601#define PERLVARI(p,v,t,i)	PERLVAR(p,v,t)
602#define PERLVARIC(p,v,t,i)	PERLVAR(p,v,t)
603
604/* In Tru64 (__DEC && __osf__) the cc option -std1 causes that one
605 * cannot cast between void pointers and function pointers without
606 * info level warnings.  The PL_force_link_funcs[] would cause a few
607 * hundred of those warnings.  In code one can circumnavigate this by using
608 * unions that overlay the different pointers, but in declarations one
609 * cannot use this trick.  Therefore we just disable the warning here
610 * for the duration of the PL_force_link_funcs[] declaration. */
611
612#if defined(__DECC) && defined(__osf__)
613#pragma message save
614#pragma message disable (nonstandcast)
615#endif
616
617#include "perlvars.h"
618
619#if defined(__DECC) && defined(__osf__)
620#pragma message restore
621#endif
622
623#undef PERLVAR
624#undef PERLVARA
625#undef PERLVARI
626#undef PERLVARIC
627};
628#endif	/* DOINIT */
629
630END_EXTERN_C
631
632#endif	/* PERL_NO_FORCE_LINK */
633
634#else	/* !PERL_CORE */
635
636EOT
637
638foreach $sym (@globvar) {
639    print $capih
640	"#undef  PL_$sym\n" . hide("PL_$sym", "(*Perl_G${sym}_ptr(NULL))");
641}
642
643print $capih <<'EOT';
644
645#endif /* !PERL_CORE */
646#endif /* MULTIPLICITY && PERL_GLOBAL_STRUCT */
647
648#endif /* __perlapi_h__ */
649EOT
650
651read_only_bottom_close_and_rename($capih) if ! $error_count;
652
653my $capi = open_print_header('perlapi.c', <<'EOQ');
654 *
655 *
656 * Up to the threshold of the door there mounted a flight of twenty-seven
657 * broad stairs, hewn by some unknown art of the same black stone.  This
658 * was the only entrance to the tower; ...
659 *
660 *     [p.577 of _The Lord of the Rings_, III/x: "The Voice of Saruman"]
661 *
662 */
663EOQ
664
665print $capi <<'EOT';
666#include "EXTERN.h"
667#include "perl.h"
668#include "perlapi.h"
669
670#if defined (MULTIPLICITY) && defined (PERL_GLOBAL_STRUCT)
671
672/* accessor functions for Perl "global" variables */
673START_EXTERN_C
674
675#undef PERLVARI
676#define PERLVARI(p,v,t,i) PERLVAR(p,v,t)
677
678#undef PERLVAR
679#undef PERLVARA
680#define PERLVAR(p,v,t)		t* Perl_##p##v##_ptr(pTHX)		\
681			{ dVAR; PERL_UNUSED_CONTEXT; return &(PL_##v); }
682#define PERLVARA(p,v,n,t)	PL_##v##_t* Perl_##p##v##_ptr(pTHX)	\
683			{ dVAR; PERL_UNUSED_CONTEXT; return &(PL_##v); }
684#undef PERLVARIC
685#define PERLVARIC(p,v,t,i)	\
686			const t* Perl_##p##v##_ptr(pTHX)		\
687			{ PERL_UNUSED_CONTEXT; return (const t *)&(PL_##v); }
688#include "perlvars.h"
689
690#undef PERLVAR
691#undef PERLVARA
692#undef PERLVARI
693#undef PERLVARIC
694
695END_EXTERN_C
696
697#endif /* MULTIPLICITY && PERL_GLOBAL_STRUCT */
698EOT
699
700read_only_bottom_close_and_rename($capi) if ! $error_count;
701
702die "$error_count errors found" if $error_count;
703
704# ex: set ts=8 sts=4 sw=4 noet:
705