1#!./perl 2 3BEGIN { 4 unshift @INC, 't'; 5 require Config; 6 if (($Config::Config{'extensions'} !~ /\bB\b/) ){ 7 print "1..0 # Skip -- Perl configured without B module\n"; 8 exit 0; 9 } 10} 11 12$| = 1; 13use warnings; 14use strict; 15use Test::More; 16 17BEGIN { use_ok( 'B' ); } 18 19 20package Testing::Symtable; 21use vars qw($This @That %wibble $moo %moo); 22my $not_a_sym = 'moo'; 23 24sub moo { 42 } 25sub car { 23 } 26 27 28package Testing::Symtable::Foo; 29sub yarrow { "Hock" } 30 31package Testing::Symtable::Bar; 32sub hock { "yarrow" } 33 34package main; 35use vars qw(%Subs); 36local %Subs = (); 37B::walksymtable(\%Testing::Symtable::, 'find_syms', sub { $_[0] =~ /Foo/ }, 38 'Testing::Symtable::'); 39 40sub B::GV::find_syms { 41 my($symbol) = @_; 42 43 $main::Subs{$symbol->STASH->NAME . '::' . $symbol->NAME}++; 44} 45 46my @syms = map { 'Testing::Symtable::'.$_ } qw(This That wibble moo car 47 BEGIN); 48push @syms, "Testing::Symtable::Foo::yarrow"; 49 50# Make sure we hit all the expected symbols. 51ok( join('', sort @syms) eq join('', sort keys %Subs), 'all symbols found' ); 52 53# Make sure we only hit them each once. 54ok( (!grep $_ != 1, values %Subs), '...and found once' ); 55 56# Tests for MAGIC / MOREMAGIC 57ok( B::svref_2object(\$.)->MAGIC->TYPE eq "\0", '$. has \0 magic' ); 58{ 59 my $e = ''; 60 local $SIG{__DIE__} = sub { $e = $_[0] }; 61 # Used to dump core, bug #16828 62 eval { B::svref_2object(\$.)->MAGIC->MOREMAGIC->TYPE; }; 63 like( $e, qr/Can't call method "TYPE" on an undefined value/, 64 '$. has no more magic' ); 65} 66 67{ 68 my $pie = 'Good'; 69 # This needs to be a package variable, as vars in the pad have some flags. 70 my $r = B::svref_2object(\$::data2); 71 is($r->FLAGS(), 0, "uninitialised package variable has flags of 0"); 72 is($r->SvTYPE(), 0, "uninitialised package variable has type 0"); 73 is($r->POK(), 0, "POK false"); 74 is($r->ROK(), 0, "ROK false"); 75 is($r->MAGICAL(), 0, "MAGICAL false"); 76 $::data2 = $pie; 77 isnt($r->FLAGS(), 0, "initialised package variable has nonzero flags"); 78 isnt($r->SvTYPE(), 0, "initialised package variable has nonzero type"); 79 isnt($r->POK(), 0, "POK true"); 80 is($r->ROK(), 0, "ROK false"); 81 is($r->MAGICAL(), 0, "MAGICAL false"); 82 83 $::data2 = substr $pie, 0, 1; 84 isnt($r->FLAGS(), 0, "initialised package variable has nonzero flags"); 85 isnt($r->SvTYPE(), 0, "initialised package variable has nonzero type"); 86 isnt($r->POK(), 0, "POK true"); 87 is($r->ROK(), 0, "ROK false"); 88 is($r->MAGICAL(), 0, "MAGICAL true"); 89 90 $::data2 = \$pie; 91 isnt($r->FLAGS(), 0, "initialised package variable has nonzero flags"); 92 isnt($r->SvTYPE(), 0, "initialised package variable has nonzero type"); 93 is($r->POK(), 0, "POK false"); 94 isnt($r->ROK(), 0, "ROK true"); 95 is($r->MAGICAL(), 0, "MAGICAL false"); 96 97 is($r->REFCNT(), 1, "Reference count is 1"); 98 { 99 my $ref = \$::data2; 100 is($r->REFCNT(), 2, "Second reference"); 101 } 102 is($r->REFCNT(), 1, "Reference count is 1"); 103 104} 105 106my $r = qr/foo/; 107my $obj = B::svref_2object($r); 108my $regexp = ($] < 5.011) ? $obj->MAGIC : $obj; 109ok($regexp->precomp() eq 'foo', 'Get string from qr//'); 110like($regexp->REGEX(), qr/\d+/, "REGEX() returns numeric value"); 111my $iv = 1; 112my $iv_ref = B::svref_2object(\$iv); 113is(ref $iv_ref, "B::IV", "Test B:IV return from svref_2object"); 114is($iv_ref->REFCNT, 1, "Test B::IV->REFCNT"); 115# Flag tests are needed still 116#diag $iv_ref->FLAGS(); 117my $iv_ret = $iv_ref->object_2svref(); 118is(ref $iv_ret, "SCALAR", "Test object_2svref() return is SCALAR"); 119is($$iv_ret, $iv, "Test object_2svref()"); 120is($iv_ref->int_value, $iv, "Test int_value()"); 121is($iv_ref->IV, $iv, "Test IV()"); 122is($iv_ref->IVX(), $iv, "Test IVX()"); 123is($iv_ref->UVX(), $iv, "Test UVX()"); 124is(eval { $iv_ref->RV() }, undef, 'Test RV() on IV'); 125like($@, qr/argument is not SvROK/, 'Test RV() IV'); 126$iv = \"Pie"; 127my $val = eval { $iv_ref->RV() }; 128is(ref $val, 'B::PV', 'Test RV() on a reference'); 129is($val->PV(), 'Pie', 'Value expected'); 130is($@, '', "Test RV()"); 131 132my $pv = "Foo"; 133my $pv_ref = B::svref_2object(\$pv); 134is(ref $pv_ref, "B::PV", "Test B::PV return from svref_2object"); 135is($pv_ref->REFCNT, 1, "Test B::PV->REFCNT"); 136# Flag tests are needed still 137#diag $pv_ref->FLAGS(); 138my $pv_ret = $pv_ref->object_2svref(); 139is(ref $pv_ret, "SCALAR", "Test object_2svref() return is SCALAR"); 140is($$pv_ret, $pv, "Test object_2svref()"); 141is($pv_ref->PV(), $pv, "Test PV()"); 142is(eval { $pv_ref->RV() }, undef, 'Test RV() on PV'); 143like($@, qr/argument is not SvROK/, 'Test RV() on PV'); 144is($pv_ref->PVX(), $pv, "Test PVX()"); 145$pv = \"Pie"; 146$val = eval { $pv_ref->RV() }; 147is(ref $val, 'B::PV', 'Test RV() on a reference'); 148is($val->PV(), 'Pie', 'Value expected'); 149is($@, '', "Test RV()"); 150 151my $nv = 1.1; 152my $nv_ref = B::svref_2object(\$nv); 153is(ref $nv_ref, "B::NV", "Test B::NV return from svref_2object"); 154is($nv_ref->REFCNT, 1, "Test B::NV->REFCNT"); 155# Flag tests are needed still 156#diag $nv_ref->FLAGS(); 157my $nv_ret = $nv_ref->object_2svref(); 158is(ref $nv_ret, "SCALAR", "Test object_2svref() return is SCALAR"); 159is($$nv_ret, $nv, "Test object_2svref()"); 160is($nv_ref->NV, $nv, "Test NV()"); 161is($nv_ref->NVX(), $nv, "Test NVX()"); 162is(eval { $nv_ref->RV() }, undef, 'Test RV() on NV'); 163like($@, qr/Can't locate object method "RV" via package "B::NV"/, 164 'Test RV() on NV'); 165 166my $null = undef; 167my $null_ref = B::svref_2object(\$null); 168is(ref $null_ref, "B::NULL", "Test B::NULL return from svref_2object"); 169is($null_ref->REFCNT, 1, "Test B::NULL->REFCNT"); 170# Flag tests are needed still 171#diag $null_ref->FLAGS(); 172my $null_ret = $nv_ref->object_2svref(); 173is(ref $null_ret, "SCALAR", "Test object_2svref() return is SCALAR"); 174is($$null_ret, $nv, "Test object_2svref()"); 175 176my $RV_class = $] >= 5.011 ? 'B::IV' : 'B::RV'; 177my $cv = sub{ 1; }; 178my $cv_ref = B::svref_2object(\$cv); 179is($cv_ref->REFCNT, 1, "Test $RV_class->REFCNT"); 180is(ref $cv_ref, "$RV_class", 181 "Test $RV_class return from svref_2object - code"); 182my $cv_ret = $cv_ref->object_2svref(); 183is(ref $cv_ret, "REF", "Test object_2svref() return is REF"); 184is($$cv_ret, $cv, "Test object_2svref()"); 185 186my $av = []; 187my $av_ref = B::svref_2object(\$av); 188is(ref $av_ref, "$RV_class", 189 "Test $RV_class return from svref_2object - array"); 190 191my $hv = []; 192my $hv_ref = B::svref_2object(\$hv); 193is(ref $hv_ref, "$RV_class", 194 "Test $RV_class return from svref_2object - hash"); 195 196local *gv = *STDOUT; 197my $gv_ref = B::svref_2object(\*gv); 198is(ref $gv_ref, "B::GV", "Test B::GV return from svref_2object"); 199ok(! $gv_ref->is_empty(), "Test is_empty()"); 200ok($gv_ref->isGV_with_GP(), "Test isGV_with_GP()"); 201is($gv_ref->NAME(), "gv", "Test NAME()"); 202is($gv_ref->SAFENAME(), "gv", "Test SAFENAME()"); 203like($gv_ref->FILE(), qr/b\.t$/, "Testing FILE()"); 204is($gv_ref->SvTYPE(), B::SVt_PVGV, "Test SvTYPE()"); 205is($gv_ref->FLAGS() & B::SVTYPEMASK, B::SVt_PVGV, "Test SVTYPEMASK"); 206 207# The following return B::SPECIALs. 208is(ref B::sv_yes(), "B::SPECIAL", "B::sv_yes()"); 209is(ref B::sv_no(), "B::SPECIAL", "B::sv_no()"); 210is(ref B::sv_undef(), "B::SPECIAL", "B::sv_undef()"); 211 212# More utility functions 213is(B::ppname(0), "pp_null", "Testing ppname (this might break if opnames.h is changed)"); 214is(B::opnumber("null"), 0, "Testing opnumber with opname (null)"); 215is(B::opnumber("pp_null"), 0, "Testing opnumber with opname (pp_null)"); 216{ 217 my $hash = B::hash("wibble"); 218 like($hash, qr/\A0x[0-9a-f]+\z/, "Testing B::hash(\"wibble\")"); 219 unlike($hash, qr/\A0x0+\z/, "Testing B::hash(\"wibble\")"); 220 221 SKIP: { 222 skip "Nulls don't hash to the same bucket regardless of length with this PERL_HASH implementation", 20 223 if B::hash("") ne B::hash("\0" x 19); 224 like(B::hash("\0" x $_), qr/\A0x0+\z/, "Testing B::hash(\"0\" x $_)") 225 for 0..19; 226 } 227 228 $hash = eval {B::hash(chr 256)}; 229 is($hash, undef, "B::hash() refuses non-octets"); 230 like($@, qr/^Wide character in subroutine entry/); 231 232 $hash = B::hash(chr 163); 233 my $str = chr(163) . chr 256; 234 chop $str; 235 is(B::hash($str), $hash, 'B::hash() with chr 128-256 is well-behaved'); 236} 237{ 238 is(B::cstring(undef), '0', "Testing B::cstring(undef)"); 239 is(B::perlstring(undef), '0', "Testing B::perlstring(undef)"); 240 241 my @common = map {eval $_, $_} 242 '"wibble"', '"\""', '"\'"', '"\\\\"', '"\\n\\r\\t\\b\\a\\f"', '"\000"', 243 '"\000\000"', '"\000Bing\000"', ord 'N' == 78 ? '"\\177"' : (); 244 245 my $oct = sprintf "\\%03o", ord '?'; 246 my @tests = (@common, '$_', '"$_"', '@_', '"@_"', '??N', qq{"$oct?N"}, 247 ord 'N' == 78 ? (chr 11, '"\v"'): ()); 248 while (my ($test, $expect) = splice @tests, 0, 2) { 249 is(B::cstring($test), $expect, "B::cstring($expect)"); 250 } 251 252 @tests = (@common, '$_', '"\$_"', '@_', '"\@_"', '??N', '"??N"', 253 chr 256, '"\x{100}"', chr 65536, '"\x{10000}"', 254 ord 'N' == 78 ? (chr 11, '"\013"'): ()); 255 while (my ($test, $expect) = splice @tests, 0, 2) { 256 is(B::perlstring($test), $expect, "B::perlstring($expect)"); 257 utf8::upgrade $test; 258 $expect =~ s/\\b/\\x\{8\}/g; 259 $expect =~ s/\\([0-7]{3})/sprintf "\\x\{%x\}", oct $1/eg; 260 is(B::perlstring($test), $expect, "B::perlstring($expect) (Unicode)"); 261 } 262} 263{ 264 my @tests = ((map {eval(qq{"$_"}), $_} '\\n', '\\r', '\\t', 265 '\\b', '\\a', '\\f', '\\000', '\\\'', '?'), '"', '"', 266 ord 'N' == 78 ? (chr 11, '\v', "\177", '\\177') : ()); 267 268 while (my ($test, $expect) = splice @tests, 0, 2) { 269 is(B::cchar($test), "'${expect}'", "B::cchar(qq{$expect})"); 270 } 271} 272 273is(B::class(bless {}, "Wibble::Bibble"), "Bibble", "Testing B::class()"); 274is(B::cast_I32(3.14), 3, "Testing B::cast_I32()"); 275is(B::opnumber("chop"), $] >= 5.015 ? 39 : 38, 276 "Testing opnumber with opname (chop)"); 277 278{ 279 no warnings 'once'; 280 my $sg = B::sub_generation(); 281 *UNIVERSAL::hand_waving = sub { }; 282 ok( $sg < B::sub_generation, "sub_generation increments" ); 283} 284 285like( B::amagic_generation, qr/^\d+\z/, "amagic_generation" ); 286 287is(B::svref_2object(sub {})->ROOT->ppaddr, 'PL_ppaddr[OP_LEAVESUB]', 288 'OP->ppaddr'); 289 290# This one crashes from perl 5.8.9 to B 1.24 (perl 5.13.6): 291B::svref_2object(sub{y/\x{100}//})->ROOT->first->first->sibling->sv; 292ok 1, 'B knows that UTF trans is a padop in 5.8.9, not an svop'; 293 294{ 295 format FOO = 296foo 297. 298 my $f = B::svref_2object(*FOO{FORMAT}); 299 isa_ok $f, 'B::FM'; 300 can_ok $f, 'LINES'; 301} 302 303my $sub1 = sub {die}; 304{ no warnings 'once'; no strict; *Peel:: = *{"Pe\0e\x{142}::"} } 305my $sub2 = eval 'package Peel; sub {die}'; 306my $cop = B::svref_2object($sub1)->ROOT->first->first; 307my $bobby = B::svref_2object($sub2)->ROOT->first->first; 308is $cop->stash->object_2svref, \%main::, 'COP->stash'; 309is $cop->stashpv, 'main', 'COP->stashpv'; 310 311SKIP: { 312 skip "no nulls in packages before 5.17", 1 if $] < 5.017; 313 is $bobby->stashpv, "Pe\0e\x{142}", 'COP->stashpv with utf8 and nulls'; 314} 315 316SKIP: { 317 skip "no stashoff", 2 if $] < 5.017 || !$Config::Config{useithreads}; 318 like $cop->stashoff, qr/^[1-9]\d*\z/a, 'COP->stashoff'; 319 isnt $cop->stashoff, $bobby->stashoff, 320 'different COP->stashoff for different stashes'; 321} 322 323 324# Test $B::overlay 325{ 326 my $methods = { 327 BINOP => [ qw(last) ], 328 COP => [ qw(arybase cop_seq file filegv hints hints_hash io 329 label line stash stashpv 330 stashoff warnings) ], 331 LISTOP => [ qw(children) ], 332 LOGOP => [ qw(other) ], 333 LOOP => [ qw(lastop nextop redoop) ], 334 OP => [ qw(desc flags name next opt ppaddr private sibling 335 size spare targ type) ], 336 PADOP => [ qw(gv padix sv) ], 337 PMOP => [ qw(code_list pmflags pmoffset pmreplroot pmreplstart pmstash pmstashpv precomp reflags) ], 338 PVOP => [ qw(pv) ], 339 SVOP => [ qw(gv sv) ], 340 UNOP => [ qw(first) ], 341 }; 342 343 my $overlay = {}; 344 my $op = B::svref_2object(sub { my $x = 1 })->ROOT; 345 346 for my $class (sort keys %$methods) { 347 for my $meth (@{$methods->{$class}}) { 348 my $full = "B::${class}::$meth"; 349 die "Duplicate method '$full'\n" 350 if grep $_ eq $full, @{$overlay->{$meth}}; 351 push @{$overlay->{$meth}}, "B::${class}::$meth"; 352 } 353 } 354 355 { 356 local $B::overlay; # suppress 'used once' warning 357 local $B::overlay = { $$op => $overlay }; 358 359 for my $class (sort keys %$methods) { 360 bless $op, "B::$class"; # naughty 361 for my $meth (@{$methods->{$class}}) { 362 if ($op->can($meth)) { 363 my $list = $op->$meth; 364 ok(defined $list 365 && ref($list) eq "ARRAY" 366 && grep($_ eq "B::${class}::$meth", @$list), 367 "overlay: B::$class $meth"); 368 } 369 else { 370 pass("overlay: B::$class $meth (skipped; no method)"); 371 } 372 } 373 } 374 } 375 # B::overlay should be disabled again here 376 is($op->name, "leavesub", "overlay: orig name"); 377} 378 379{ # [perl #118525] 380 { 381 sub foo {} 382 my $cv = B::svref_2object(\&foo); 383 ok($cv, "make a B::CV from a non-anon sub reference"); 384 isa_ok($cv, "B::CV"); 385 my $gv = $cv->GV; 386 ok($gv, "we get a GV from a GV on a normal sub"); 387 isa_ok($gv, "B::GV"); 388 is($gv->NAME, "foo", "check the GV name"); 389 SKIP: 390 { # do we need these version checks? 391 skip "no HEK before 5.18", 1 if $] < 5.018; 392 is($cv->NAME_HEK, undef, "no hek for a global sub"); 393 } 394 } 395 396SKIP: 397 { 398 skip "no HEK before 5.18", 4 if $] < 5.018; 399 eval <<'EOS' 400 { 401 use feature 'lexical_subs'; 402 no warnings 'experimental::lexical_subs'; 403 my sub bar {}; 404 my $cv = B::svref_2object(\&bar); 405 ok($cv, "make a B::CV from a lexical sub reference"); 406 isa_ok($cv, "B::CV"); 407 my $gv = $cv->GV; 408 isa_ok($gv, "B::SPECIAL", "GV on a lexical sub"); 409 my $hek = $cv->NAME_HEK; 410 is($hek, "bar", "check the NAME_HEK"); 411 } 412 1; 413EOS 414 or die "lexical_subs test failed to compile: $@"; 415 } 416} 417 418done_testing(); 419