Lexical-SealRequireHints-0.011000755001750001750 013132500557 16255 5ustar00zeframzefram000000000000Lexical-SealRequireHints-0.011/.gitignore000444001750001750 30113132500550 20345 0ustar00zeframzefram000000000000/Build /Makefile /_build /blib /META.json /META.yml /MYMETA.json /MYMETA.yml /Makefile.PL /SIGNATURE /Lexical-SealRequireHints-* /lib/Lexical/SealRequireHints.c /lib/Lexical/SealRequireHints.o Lexical-SealRequireHints-0.011/Build.PL000444001750001750 476713132500550 17715 0ustar00zeframzefram000000000000{ use 5.006; } use warnings; use strict; use Module::Build; my $require_xs = "$]" < 5.007002 || ("$]" >= 5.009004 && "$]" < 5.010001); Module::Build->subclass(code => q{ unless(__PACKAGE__->can("cbuilder")) { *cbuilder = sub { $_[0]->_cbuilder or die "no C support" }; } unless(__PACKAGE__->can("have_c_compiler")) { *have_c_compiler = sub { my $cb = eval { $_[0]->cbuilder }; return $cb && $cb->have_compiler; }; } if($Module::Build::VERSION < 0.33) { # Older versions of Module::Build have a bug where if the # cbuilder object is used at Build.PL time (which it will # be for this distribution due to the logic in # ->find_xs_files) then that object can be dumped to the # build_params file, and then at Build time it will # attempt to use the dumped blessed object without loading # the ExtUtils::CBuilder class that is needed to make it # work. *write_config = sub { delete $_[0]->{properties}->{_cbuilder}; return $_[0]->SUPER::write_config; }; } sub find_xs_files { my($self) = @_; return {} unless $self->have_c_compiler; # On MSWin32, the XS version of the workaround can't work # properly, because it doesn't have access to the core # symbols to let SAVEHINTS() work. return {} if "$]" < 5.012 && $^O eq "MSWin32"; return $self->SUPER::find_xs_files; } sub compile_c { my($self, $file, %args) = @_; if("$]" < 5.012) { # need PERL_CORE for working SAVEHINTS() $args{defines} = { %{$args{defines} || {}}, PERL_CORE => 1, }; } return $self->SUPER::compile_c($file, %args); } })->new( module_name => "Lexical::SealRequireHints", license => "perl", configure_requires => { "Module::Build" => 0, "perl" => "5.006", "strict" => 0, "warnings" => 0, ($require_xs ? ( "ExtUtils::CBuilder" => "0.15", ) : ()), }, configure_recommends => { ($require_xs ? () : ( "ExtUtils::CBuilder" => "0.15", )), }, build_requires => { "Module::Build" => 0, "Test::More" => "0.41", "perl" => "5.006", "strict" => 0, "warnings" => 0, ($require_xs ? ( "ExtUtils::CBuilder" => "0.15", ) : ()), }, build_recommends => { ($require_xs ? () : ( "ExtUtils::CBuilder" => "0.15", )), }, requires => { "perl" => "5.006", ($require_xs ? ( "XSLoader" => 0, ) : ()), }, recommends => { ($require_xs ? () : ( "XSLoader" => 0, )), }, conflicts => { "B::Hooks::OP::Check" => "< 0.19", }, needs_compiler => 0, dynamic_config => 1, meta_add => { distribution_type => "module" }, sign => 1, )->create_build_script; 1; Lexical-SealRequireHints-0.011/Changes000444001750001750 1472113132500550 17723 0ustar00zeframzefram000000000000version 0.011; 2017-07-15 * update test suite to not rely on . in @INC, which is no longer necessarily there from Perl 5.25.7 * no longer include a Makefile.PL in the distribution * update op-munging code to the PERL_OP_PARENT-compatible style (though none of it is actually used on Perls new enough to support PERL_OP_PARENT) * rename internal gen_*_op() functions into a better style * consistently use THX_ prefix on internal function names version 0.010; 2016-03-18 * skip test with lexical $_ on Perl 5.23.4+ where that feature has been removed version 0.009; 2015-03-20 * in test of require for version checking, work around [perl #124135] which was introduced in Perl 5.21.4 version 0.008; 2015-03-20 * bugfix: don't localise hints around a version-number require, so that "use v5.10.0" can have its intentional effect of setting feature flags * bugfix: in pure Perl implementation, use a ($) prototype on CORE::GLOBAL::require, so that the argument expression will be in the correct context * better error message for refusing to use pure Perl implementation on Perl 5.9.4 to 5.10.0 * document that the pure Perl implementation breaks the use of the implicit $_ parameter with require * in swash test, don't fail if utf8.pm was loaded unexpectedly early, as has been seen to happen on some systems * test idempotence * fix test for thread safety, which risked false negatives * when preemptively loading Carp and Carp::Heavy, avoid the Perl core bug regarding the context applied to file scope of required modules, in case of future versions of those modules becoming vulnerable and running on an old Perl * declare correct version for Test::More dependency * typo fix in documentation * typo fix in a comment version 0.007; 2012-02-11 * be thread-safe, by mutex control on op check hooking * in pure Perl implementation, avoid putting extra eval stack frames around the require, to avoid unnecessary complication of exception handling; this can't be done on Perls 5.9.4 to 5.10.0, so don't allow use of the pure Perl implementation on those Perls * revise documentation to suggest loading this module earlier * document the relevant changes to the Perl core in more detail * on Perl versions where the pure Perl implementation can't work, dynamically declare requirement for XS infrastructure in Build.PL * refine threshold for ability to correctly override require from 5.8.0 to 5.7.2 * revise minimum required Perl version down from 5.6.1 to 5.6.0 * test that modules see the correct context at file scope * test that module return values are handled correctly * test that the module doesn't generate warnings * in pure Perl implementation, fix handling of the variable that previously needed to be "our" * rearrange and better comment the treatment of lexical warnings in the Perl code version 0.006; 2011-11-20 * bugfix: avoid loading warnings.pm and leaving its delayed requires of Carp.pm susceptible to hint leakage, which was causing trouble on some Perls * skip swash test on Perl 5.6, where swash loading appears to be broken by loading Test::More or anything else useful * remove bogus tests that cause false failures on Perl 5.15.5 * in Build.PL, declare incompatibility with pre-0.19 B::Hooks::OP::Check, which doesn't play nicely around op check hooking * comment why a variable surprisingly needs to be "our" * convert .cvsignore to .gitignore version 0.005; 2011-07-25 * bugfix: work around core bug [perl #73174] affecting Unicode swash loading, and apply entire workaround arrangement to 5.11.{0..5} where [perl #73174] exists but [perl #68590] does not * correct dynamic_config setting to 0 * include META.json in distribution * add MYMETA.json to .cvsignore version 0.004; 2010-11-21 * bugfix: don't attempt to use XS version of the workaround on Win32, where it can't work properly due to linker restriction on access to core symbols * only define PERL_CORE for compilation on Perl versions where the bug workaround (and thus interference with core-private stuff) is actually necessary * in XS, use PERL_NO_GET_CONTEXT for efficiency * in XS, declare "PROTOTYPES: DISABLE" to prevent automatic generation of unintended prototypes * in XS, provide a reserve definition of croak, so that the Perl_croak circumlocution is avoided even with PERL_CORE defined * in XS, give symbolic names to the Perl version thresholds * jump through hoops to avoid compiler warnings * use full stricture in test suite * also test POD coverage of pure Perl implementation * in t/setup_pp.pl, avoid a warning that occurs if XSLoader::load() is given no arguments, which is now a valid usage * in Build.PL, explicitly set needs_compiler to avoid bogus auto-dependency on ExtUtils::CBuilder * in Build.PL, complete declaration of configure-time requirements version 0.003; 2010-04-10 * bugfix: in pure-Perl implementation, make sure ambient package (from which require is invoked) is passed on correctly to the code in the required file, on those Perls where it is so inherited * in XS, use macros to avoid explicit passing of aTHX, in the manner of the core * in XS, avoid using "class" as a variable name, for compatibility with C++ compilers * make all numeric comparisons against $] stringify it first, to avoid architecture-dependent problems with floating point rounding giving it an unexpected numeric value * in Build.PL, explicitly declare configure-time requirements * add MYMETA.yml to .cvsignore version 0.002; 2009-10-21 * generate a more normal-looking op tree, that doesn't crash B::Deparse * don't apply the workaround on Perl 5.11.0 or later, where the bug has been fixed * in t/seal.t, test that cop_hints_hash is properly handled * check for required Perl version at runtime version 0.001; 2009-09-26 * bugfix: die cleanly if the pure-Perl implementation is needed but won't work (which occurs on pre-5.8 perls) * bugfix: avoid undesired warning from pure-Perl implementation if require has already been overridden via CORE::GLOBAL::require * in tests, set HINT_LOCALIZE_HH where appropriate, to avoid false test failures on pre-5.10 perls * test that the module plays nicely with code that overrides require via CORE::GLOBAL::require version 0.000; 2009-09-22 * initial released version Lexical-SealRequireHints-0.011/MANIFEST000444001750001750 136413132500550 17540 0ustar00zeframzefram000000000000.gitignore Build.PL Changes MANIFEST META.json META.yml README lib/Lexical/SealRequireHints.pm lib/Lexical/SealRequireHints.xs t/before_warnings.t t/before_warnings_pp.t t/context.t t/context_pp.t t/defsv.t t/eval.t t/eval_pp.t t/idempotent.t t/idempotent_pp.t t/lib/t/context_0.pm t/lib/t/context_1.pm t/lib/t/context_2.pm t/lib/t/eval_0.pm t/lib/t/package_0.pm t/lib/t/seal_0.pm t/lib/t/seal_1.pm t/lib/t/seal_2.pm t/lib/t/seal_3.pm t/lib/t/seal_4.pm t/override.t t/override_pp.t t/package.t t/package_pp.t t/pod_cvg.t t/pod_cvg_pp.t t/pod_syn.t t/seal.t t/seal_pp.t t/setup_pp.pl t/swash.t t/swash_pp.t t/threads.t t/threads_pp.t t/version_check.t t/version_check_pp.t t/version_feature.t t/version_feature_pp.t SIGNATURE Added here by Module::Build Lexical-SealRequireHints-0.011/META.json000444001750001750 261213132500550 20025 0ustar00zeframzefram000000000000{ "abstract" : "prevent leakage of lexical hints", "author" : [ "Andrew Main (Zefram) " ], "dynamic_config" : 1, "generated_by" : "Module::Build version 0.4222", "license" : [ "perl_5" ], "meta-spec" : { "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec", "version" : 2 }, "name" : "Lexical-SealRequireHints", "prereqs" : { "build" : { "requires" : { "Module::Build" : "0", "Test::More" : "0.41", "perl" : "5.006", "strict" : "0", "warnings" : "0" } }, "configure" : { "requires" : { "Module::Build" : "0", "perl" : "5.006", "strict" : "0", "warnings" : "0" } }, "runtime" : { "conflicts" : { "B::Hooks::OP::Check" : "< 0.19" }, "recommends" : { "XSLoader" : "0" }, "requires" : { "perl" : "5.006" } } }, "provides" : { "Lexical::SealRequireHints" : { "file" : "lib/Lexical/SealRequireHints.pm", "version" : "0.011" } }, "release_status" : "stable", "resources" : { "license" : [ "http://dev.perl.org/licenses/" ] }, "version" : "0.011", "x_serialization_backend" : "JSON::PP version 2.93" } Lexical-SealRequireHints-0.011/META.yml000444001750001750 153213132500550 17655 0ustar00zeframzefram000000000000--- abstract: 'prevent leakage of lexical hints' author: - 'Andrew Main (Zefram) ' build_requires: Module::Build: '0' Test::More: '0.41' perl: '5.006' strict: '0' warnings: '0' configure_requires: Module::Build: '0' perl: '5.006' strict: '0' warnings: '0' conflicts: B::Hooks::OP::Check: '< 0.19' dynamic_config: 1 generated_by: 'Module::Build version 0.4222, CPAN::Meta::Converter version 2.150010' license: perl meta-spec: url: http://module-build.sourceforge.net/META-spec-v1.4.html version: '1.4' name: Lexical-SealRequireHints provides: Lexical::SealRequireHints: file: lib/Lexical/SealRequireHints.pm version: '0.011' recommends: XSLoader: '0' requires: perl: '5.006' resources: license: http://dev.perl.org/licenses/ version: '0.011' x_serialization_backend: 'CPAN::Meta::YAML version 0.012' Lexical-SealRequireHints-0.011/README000444001750001750 530513132500550 17266 0ustar00zeframzefram000000000000NAME Lexical::SealRequireHints - prevent leakage of lexical hints DESCRIPTION This module works around two historical bugs in Perl's handling of the "%^H" (lexical hints) variable. One bug causes lexical state in one file to leak into another that is "require"d/"use"d from it. This bug, [perl #68590], was present from Perl 5.6 up to Perl 5.10, fixed in Perl 5.11.0. The second bug causes lexical state (normally a blank "%^H" once the first bug is fixed) to leak outwards from "utf8.pm", if it is automatically loaded during Unicode regular expression matching, into whatever source is compiling at the time of the regexp match. This bug, [perl #73174], was present from Perl 5.8.7 up to Perl 5.11.5, fixed in Perl 5.12.0. Both of these bugs seriously damage the usability of any module relying on "%^H" for lexical scoping, on the affected Perl versions. It is in practice essential to work around these bugs when using such modules. On versions of Perl that require such a workaround, this module globally changes the behaviour of "require", including "use" and the implicit "require" performed in Unicode regular expression matching, so that it no longer exhibits these bugs. The workaround supplied by this module takes effect the first time its "import" method is called. Typically this will be done by means of a "use" statement. This should be done as early as possible, because it only affects "require"/"use" statements that are compiled after the workaround goes into effect. For "use" statements, and "require" statements that are executed immediately and only once, it suffices to invoke the workaround when loading the first module that will set up vulnerable lexical state. Delayed-action "require" statements, however, are more troublesome, and can require the workaround to be loaded much earlier. Ultimately, an affected Perl program may need to load the workaround as very nearly its first action. Invoking this module multiple times, from multiple modules, is not a problem: the workaround is only applied once, and applies to everything subsequently compiled. This module is implemented in XS, with a pure Perl backup version for systems that can't handle XS modules. The XS version has a better chance of playing nicely with other modules that modify "require" handling. The pure Perl version can't work at all on some Perl versions; users of those versions must use the XS. INSTALLATION perl Build.PL ./Build ./Build test ./Build install AUTHOR Andrew Main (Zefram) COPYRIGHT Copyright (C) 2009, 2010, 2011, 2012, 2015, 2016, 2017 Andrew Main (Zefram) LICENSE This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. Lexical-SealRequireHints-0.011/SIGNATURE000644001750001750 673213132500557 17710 0ustar00zeframzefram000000000000This file contains message digests of all files listed in MANIFEST, signed via the Module::Signature module, version 0.73. To verify the content in this distribution, first make sure you have Module::Signature installed, then type: % cpansign -v It will check each file's integrity, as well as the signature's validity. If "==> Signature verified OK! <==" is not displayed, the distribution may already have been compromised, and you should not run its Makefile.PL or Build.PL. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 SHA1 6950821fe34951e6170552099d0de2ee22e43714 .gitignore SHA1 0616efb9fea4b42ef61504539491dea58c0786b1 Build.PL SHA1 6350fe8377653135b4815b6e0e1ef388dd3aea1d Changes SHA1 f6bab67957ec6cb5a1dbfb303390229f981b96db MANIFEST SHA1 efc5631378f819a1dfbd4074fb6d38f492970198 META.json SHA1 c9698f97e2d78e3a15f79570c61fab4a499e1314 META.yml SHA1 3f668a964c81d5ce977c778255b5eed9fea1c6b2 README SHA1 4327c0f4dd68ec8bd91d35eaabadb92723346921 lib/Lexical/SealRequireHints.pm SHA1 ee3c56448c1878c343d62da40f2021e9d69528a2 lib/Lexical/SealRequireHints.xs SHA1 85aaf18e006530f42082c756aa1040649c8b09a0 t/before_warnings.t SHA1 ba8ac9a2c5eae1646fe0a32884f8bce8164981d4 t/before_warnings_pp.t SHA1 f0e8de16764c8ed0cb2de866e62e04d3b6710681 t/context.t SHA1 ae68c412d70f10ac1c8dfd0e78a1fcb03c64a4cd t/context_pp.t SHA1 5439e1dcab04c71c710ee9d6566f0a8794f054a1 t/defsv.t SHA1 ba454428e28bf1e2c52ab85f99262eafec90264a t/eval.t SHA1 0dc83a10b6e41c384c6d14d70d941f0f9852ea3e t/eval_pp.t SHA1 6b56f4e9647471655eeff10a08293bef3ffd9706 t/idempotent.t SHA1 f884176ed69eee995d27f355906f9c4089fbd207 t/idempotent_pp.t SHA1 d40cabac0840b217bd9790fcf9c61f53d84561ec t/lib/t/context_0.pm SHA1 c38cbea405a2738de1e144063993d9958934b828 t/lib/t/context_1.pm SHA1 f13b20d1b34f6765fa222a387c022e4543aef945 t/lib/t/context_2.pm SHA1 e9a4397c1e339f95671c1b5e609426f624784efe t/lib/t/eval_0.pm SHA1 8f88eba8be8441c0e078f3279b9220a2fdcd7c7c t/lib/t/package_0.pm SHA1 8f7a77729ec67ed32b8faa2492bb0f4ee4f35744 t/lib/t/seal_0.pm SHA1 881d167b1d9169cef37af0d845af437e90e7869d t/lib/t/seal_1.pm SHA1 77fb76f802a2669291950d830979738ba34ebd71 t/lib/t/seal_2.pm SHA1 8bebdc1f1032ee7e2c3448b8c08eb68a30eaac3f t/lib/t/seal_3.pm SHA1 e8478e388c78af43a2f3b50dd4c2d647dbd3b9ef t/lib/t/seal_4.pm SHA1 93873dcbc2f0a6d3969da339804fd1b2fb2f7215 t/override.t SHA1 275ad60cee3db0a156dd290e10bffdd2f15b020d t/override_pp.t SHA1 c4b1c66405db4fb0236d793355669f46b4239247 t/package.t SHA1 32a8ee26109cebb5294d304f8e26e5f2fc41357c t/package_pp.t SHA1 ec7947b4fd26dfa4c85ce4cddf2e0d9b9f7b6fcc t/pod_cvg.t SHA1 8b0ef0af30cd5064cf1b3d57c5fdbab11f8c567c t/pod_cvg_pp.t SHA1 65c75abdef6f01a5d1588a307f2ddfe2333dc961 t/pod_syn.t SHA1 b98b2fdbda12097de5f07efb0e385a0d541c325a t/seal.t SHA1 e55bad95386f7c6a7fa706879ee4a57c65d1d2ff t/seal_pp.t SHA1 f8bd31bc8099cbb21c36cddc0508652fd092e332 t/setup_pp.pl SHA1 8b64b9e77d907e8a27f665b86c0ddbf80c54fd81 t/swash.t SHA1 80c995c18004f3bbf08ee665456aa90591cf75af t/swash_pp.t SHA1 2e0c5b75f050c8a561c75808e866f002cbab7162 t/threads.t SHA1 36fd6f457842f0c87a7b766d264a3bcc6fccc889 t/threads_pp.t SHA1 0ec3dd0164e1e852b1be5f78bbacebd4990f085e t/version_check.t SHA1 8cb66e045a1218a108c7d4acf723a3eafea1a42c t/version_check_pp.t SHA1 cbff8c2d9481b01beb691a498ae98511d0b25cbe t/version_feature.t SHA1 e433dba0073843f1b0b2546776904c41e03e337f t/version_feature_pp.t -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAllqgWgACgkQOV9mt2VyAVG42gCgiQ/tfw+0miisvMiqXiU1m7xW fkkAn0CbNVe9pmiHogY4f3UMmsuLd0gg =1LYu -----END PGP SIGNATURE----- Lexical-SealRequireHints-0.011/lib000755001750001750 013132500550 17014 5ustar00zeframzefram000000000000Lexical-SealRequireHints-0.011/lib/Lexical000755001750001750 013132500550 20375 5ustar00zeframzefram000000000000Lexical-SealRequireHints-0.011/lib/Lexical/SealRequireHints.pm000444001750001750 2565313132500550 24352 0ustar00zeframzefram000000000000=head1 NAME Lexical::SealRequireHints - prevent leakage of lexical hints =head1 SYNOPSIS use Lexical::SealRequireHints; =head1 DESCRIPTION This module works around two historical bugs in Perl's handling of the C<%^H> (lexical hints) variable. One bug causes lexical state in one file to leak into another that is Cd/Cd from it. This bug, [perl #68590], was present from Perl 5.6 up to Perl 5.10, fixed in Perl 5.11.0. The second bug causes lexical state (normally a blank C<%^H> once the first bug is fixed) to leak outwards from C, if it is automatically loaded during Unicode regular expression matching, into whatever source is compiling at the time of the regexp match. This bug, [perl #73174], was present from Perl 5.8.7 up to Perl 5.11.5, fixed in Perl 5.12.0. Both of these bugs seriously damage the usability of any module relying on C<%^H> for lexical scoping, on the affected Perl versions. It is in practice essential to work around these bugs when using such modules. On versions of Perl that require such a workaround, this module globally changes the behaviour of C, including C and the implicit C performed in Unicode regular expression matching, so that it no longer exhibits these bugs. The workaround supplied by this module takes effect the first time its C method is called. Typically this will be done by means of a C statement. This should be done as early as possible, because it only affects C/C statements that are compiled after the workaround goes into effect. For C statements, and C statements that are executed immediately and only once, it suffices to invoke the workaround when loading the first module that will set up vulnerable lexical state. Delayed-action C statements, however, are more troublesome, and can require the workaround to be loaded much earlier. Ultimately, an affected Perl program may need to load the workaround as very nearly its first action. Invoking this module multiple times, from multiple modules, is not a problem: the workaround is only applied once, and applies to everything subsequently compiled. This module is implemented in XS, with a pure Perl backup version for systems that can't handle XS modules. The XS version has a better chance of playing nicely with other modules that modify C handling. The pure Perl version can't work at all on some Perl versions; users of those versions must use the XS. On all Perl versions suffering the underlying hint leakage bug, pure Perl hooking of C breaks the use of C without an explicit parameter (implicitly using C<$_>). =head1 PERL VERSION DIFFERENCES The history of the C<%^H> bugs is complex. Here is a chronological statement of the relevant changes. =over =item Perl 5.6.0 C<%^H> introduced. It exists only as a hash at compile time. It is not localised by C, so lexical hints leak into every module loaded, which is bug [perl #68590]. The C mechanism doesn't work cleanly for C, because overriding C loses the necessary special parsing of bareword arguments to it. As a result, pure Perl code can't properly globally affect the behaviour of C. Pure Perl code can localise C<%^H> itself for any particular C invocation, but a global fix is only possible through XS. =item Perl 5.7.2 The C mechanism now works cleanly for C, so pure Perl code can globally affect the behaviour of C to achieve a global fix for the bug. =item Perl 5.8.7 When C is automatically loaded during Unicode regular expression matching, C<%^H> now leaks outward from it into whatever source is compiling at the time of the regexp match, which is bug [perl #73174]. It often goes unnoticed, because [perl #68590] makes C<%^H> leak into C which then doesn't modify it, so what leaks out tends to be identical to what leaked in. If [perl #68590] is worked around, however, C<%^H> tends to be (correctly) blank inside C, and this bug therefore blanks it for the outer module. =item Perl 5.9.4 C<%^H> now exists in two forms. In addition to the relatively ordinary hash that is modified during compilation, the value that it had at each point in compilation is recorded in the compiled op tree, for later examination at runtime. It is in a special representation-sharing format, and writes to C<%^H> are meant to be performed on both forms. C does not localise the runtime form of C<%^H> (and still doesn't localise the compile-time form). A couple of special C<%^H> entries are erroneously written only to the runtime form. Pure Perl code, although it can localise the compile-time C<%^H> by normal means, can't adequately localise the runtime C<%^H>, except by using a string eval stack frame. This makes a satisfactory global fix for the leakage bug impossible in pure Perl. =item Perl 5.10.1 C now properly localises the runtime form of C<%^H>, but still not the compile-time form. A global fix is once again possible in pure Perl, because the fix only needs to localise the compile-time form. =item Perl 5.11.0 C now properly localises both forms of C<%^H>, fixing [perl #68590]. This makes [perl #73174] apparent without any workaround for [perl #68590]. The special C<%^H> entries are now correctly written to both forms of the hash. =item Perl 5.12.0 The automatic loading of C during Unicode regular expression matching now properly restores C<%^H>, fixing [perl #73174]. =back =cut package Lexical::SealRequireHints; { use 5.006; } # Don't "use warnings" here because warnings.pm can include require # statements that execute at runtime, and if they're compiled before # this module takes effect then they won't get the magic needed to avoid # leaking hints generated later. We do need to set warning bits here, # because it is necessary to turn *off* redefinition warnings for the # pure Perl implementation (which can redefine CORE::GLOBAL::require). # Not wanting to encode knowledge of specific warning bits, the only # safe thing to do is to turn them all off. BEGIN { ${^WARNING_BITS} = ""; } # Also don't "use strict", because of consequences of compiling # strict.pm's code. our $VERSION = "0.011"; if("$]" >= 5.012) { # bug not present *import = sub { die "$_[0] does not take any importation arguments\n" unless @_ == 1; }; *unimport = sub { die "$_[0] does not support unimportation\n" }; } elsif(eval { local $SIG{__DIE__}; require XSLoader; XSLoader::load(__PACKAGE__, $VERSION); 1; }) { # Successfully loaded XS. Now preemptively load modules that # may be subject to delayed require statements in XSLoader or # things that it loaded. foreach(qw(Carp.pm Carp/Heavy.pm)) { eval { local $SIG{__DIE__}; require($_); 1; }; } } elsif("$]" < 5.007002) { die "pure Perl version of @{[__PACKAGE__]} can't work on pre-5.8 perl"; } elsif("$]" >= 5.009004 && "$]" < 5.010001) { die "pure Perl version of @{[__PACKAGE__]} can't work on perl 5.10.0"; } else { my $done; *import = sub { die "$_[0] does not take any importation arguments\n" unless @_ == 1; return if $done; $done = 1; my $next_require = defined(&CORE::GLOBAL::require) ? \&CORE::GLOBAL::require : sub { my($arg) = @_; # The shenanigans with $CORE::GLOBAL::{require} # are required because if there's a # &CORE::GLOBAL::require when the eval is # executed (compiling the CORE::require it # contains) then the CORE::require in there is # interpreted as plain require on some Perl # versions, leading to recursion. my $grequire = $CORE::GLOBAL::{require}; delete $CORE::GLOBAL::{require}; my $requirer = eval qq{ package @{[scalar(caller(0))]}; sub { scalar(CORE::require(\$_[0])) }; }; $CORE::GLOBAL::{require} = $grequire; return scalar($requirer->($arg)); }; *CORE::GLOBAL::require = sub ($) { die "wrong number of arguments to require\n" unless @_ == 1; my($arg) = @_; # Some reference to $next_require is required # at this level of subroutine so that it will # be closed over and hence made available to # the string eval. my $nr = $next_require; my $requirer = eval qq{ package @{[scalar(caller(0))]}; sub { scalar(\$next_require->(\$_[0])) }; }; # We must localise %^H when performing a require # with a filename, but not a require with a # version number. This is because on Perl 5.9.5 # and above require with a version number does an # internal importation from the "feature" module, # which is intentional behaviour that must be # allowed to affect %^H. (That's logically the # wrong place for the feature importation, but # it's too late to change how old Perls do it.) # A version number is an argument that is either # numeric or, from Perl 5.9.2 onwards, a v-string. my $must_localise = ($arg^$arg) ne "0" && !("$]" >= 5.009002 && ref(\$arg) eq "VSTRING"); # On Perl 5.11 we need to set the HINT_LOCALIZE_HH # bit to get proper restoration of %^H by the # swash loading code. $^H |= 0x20000 if "$]" >= 5.011 && $must_localise; # Compile-time %^H gets localised by the # "local %^H". Runtime %^H doesn't exist prior # to Perl 5.9.4, and on Perl 5.10.1 and above is # correctly localised by require. Between those # two regimes there's an area where we can't # correctly localise runtime %^H in pure Perl, # short of putting an eval frame around the # require, so we don't use this implementation in # that region. local %^H if $must_localise; return scalar($requirer->($arg)); }; }; *unimport = sub { die "$_[0] does not support unimportation\n" }; } =head1 BUGS The operation of this module depends on influencing the compilation of C. As a result, it cannot prevent lexical state leakage through a C statement that was compiled before this module was invoked. Where problems occur, this module must be invoked earlier. On all Perl versions that need a fix for the lexical hint leakage bug, the pure Perl implementation of this module unavoidably breaks the use of C without an explicit parameter (implicitly using C<$_>). This is due to another bug in the Perl core, fixed in Perl 5.15.5, and is inherent to the mechanism by which pure Perl code can hook C. The use of implicit C<$_> with C is rare, so although this state of affairs is faulty it will actually work for most programs. Perl versions 5.12.0 and greater, despite having the C hooking bug, don't actually exhibit a problem with the pure Perl version of this module, because with the lexical hint leakage bug fixed there is no need for this module to hook C. =head1 SEE ALSO L =head1 AUTHOR Andrew Main (Zefram) =head1 COPYRIGHT Copyright (C) 2009, 2010, 2011, 2012, 2015, 2016, 2017 Andrew Main (Zefram) =head1 LICENSE This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut 1; Lexical-SealRequireHints-0.011/lib/Lexical/SealRequireHints.xs000444001750001750 1451713132500550 24365 0ustar00zeframzefram000000000000#define PERL_NO_GET_CONTEXT 1 #include "EXTERN.h" #include "perl.h" #include "XSUB.h" #define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s) #define PERL_DECIMAL_VERSION \ PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION) #define PERL_VERSION_GE(r,v,s) \ (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s)) #ifndef cBOOL # define cBOOL(x) ((bool)!!(x)) #endif /* !cBOOL */ #ifndef croak # define croak Perl_croak_nocontext #endif /* !croak */ #define Q_MUST_WORKAROUND (!PERL_VERSION_GE(5,12,0)) #define Q_HAVE_COP_HINTS_HASH PERL_VERSION_GE(5,9,4) #if Q_MUST_WORKAROUND # if !PERL_VERSION_GE(5,9,3) typedef OP *(*Perl_check_t)(pTHX_ OP *); # endif /* <5.9.3 */ # if !PERL_VERSION_GE(5,10,1) typedef unsigned Optype; # endif /* <5.10.1 */ # ifndef OpMORESIB_set # define OpMORESIB_set(o, sib) ((o)->op_sibling = (sib)) # define OpLASTSIB_set(o, parent) ((o)->op_sibling = NULL) # define OpMAYBESIB_set(o, sib, parent) ((o)->op_sibling = (sib)) # endif /* !OpMORESIB_set */ # ifndef OpSIBLING # define OpHAS_SIBLING(o) (cBOOL((o)->op_sibling)) # define OpSIBLING(o) (0 + (o)->op_sibling) # endif /* !OpSIBLING */ # ifndef wrap_op_checker # define wrap_op_checker(c,n,o) THX_wrap_op_checker(aTHX_ c,n,o) static void THX_wrap_op_checker(pTHX_ Optype opcode, Perl_check_t new_checker, Perl_check_t *old_checker_p) { if(*old_checker_p) return; OP_REFCNT_LOCK; if(!*old_checker_p) { *old_checker_p = PL_check[opcode]; PL_check[opcode] = new_checker; } OP_REFCNT_UNLOCK; } # endif /* !wrap_op_checker */ # ifndef SvVOK # define SvVOK(sv) 0 # endif /* !SvVOK */ # define refcounted_he_free(he) Perl_refcounted_he_free(aTHX_ he) # define newDEFSVOP() THX_newDEFSVOP(aTHX) static OP *THX_newDEFSVOP(pTHX) { # if PERL_VERSION_GE(5,9,1) /* hope nothing overrides the meaning of defined() */ OP *dop = newOP(OP_DEFINED, 0); if(dop->op_type == OP_DEFINED && (dop->op_flags & OPf_KIDS)) { OP *op = cUNOPx(dop)->op_first; if(OpHAS_SIBLING(op)) { cUNOPx(dop)->op_first = OpSIBLING(op); } else { cUNOPx(dop)->op_first = NULL; dop->op_flags &= ~OPf_KIDS; } OpLASTSIB_set(op, NULL); op_free(dop); return op; } op_free(dop); # endif /* >=5.9.1 */ return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); } # define op_scalar(op) THX_op_scalar(aTHX_ op) static OP *THX_op_scalar(pTHX_ OP *op) { OP *sop = newUNOP(OP_SCALAR, 0, op); if(!(sop->op_type == OP_SCALAR && (sop->op_flags & OPf_KIDS))) return sop; op = cUNOPx(sop)->op_first; if(OpHAS_SIBLING(op)) { cUNOPx(sop)->op_first = OpSIBLING(op); } else { cUNOPx(sop)->op_first = NULL; sop->op_flags &= ~OPf_KIDS; } OpLASTSIB_set(op, NULL); op_free(sop); return op; } # define pp_squashhints() THX_pp_squashhints(aTHX) static OP *THX_pp_squashhints(pTHX) { /* * SAVEHINTS() won't actually localise %^H unless the * HINT_LOCALIZE_HH bit is set. Normally that bit would be set if * there were anything in %^H, but when affected by [perl #73174] * the core's swash-loading code clears $^H without changing * %^H, so we set the bit here. We localise $^H while doing this, * in order to not clobber $^H across a normal require where the * bit is legitimately clear, except on Perl 5.11, where the bit * needs to stay set in order to get proper restoration of %^H. */ # if !PERL_VERSION_GE(5,11,0) SAVEI32(PL_hints); # endif /* <5.11.0 */ PL_hints |= HINT_LOCALIZE_HH; SAVEHINTS(); hv_clear(GvHV(PL_hintgv)); # if Q_HAVE_COP_HINTS_HASH if(PL_compiling.cop_hints_hash) { refcounted_he_free(PL_compiling.cop_hints_hash); PL_compiling.cop_hints_hash = NULL; } # endif /* Q_HAVE_COP_HINTS_HASH */ return PL_op->op_next; } # define newOP_squashhints() THX_newOP_squashhints(aTHX) static OP *THX_newOP_squashhints(pTHX) { OP *squashhints_op = newOP(OP_PUSHMARK, 0); squashhints_op->op_type = OP_RAND; squashhints_op->op_ppaddr = THX_pp_squashhints; return squashhints_op; } # define pp_maybesquashhints() THX_pp_maybesquashhints(aTHX) static OP *THX_pp_maybesquashhints(pTHX) { dSP; SV *arg = TOPs; return SvNIOKp(arg) || (PERL_VERSION_GE(5,9,2) && SvVOK(arg)) ? PL_op->op_next : pp_squashhints(); } # define newOP_maybesquashhints(argop) THX_newOP_maybesquashhints(aTHX_ argop) static OP *THX_newOP_maybesquashhints(pTHX_ OP *argop) { OP *msh_op = newUNOP(OP_NULL, 0, argop); msh_op->op_type = OP_RAND; msh_op->op_ppaddr = THX_pp_maybesquashhints; return msh_op; } static OP *(*THX_nxck_require)(pTHX_ OP *op); static OP *THX_myck_require(pTHX_ OP *op) { OP *argop; if(!(op->op_flags & OPf_KIDS)) { /* * We need to expand the implicit-parameter case * to an explicit parameter that we can operate on. * This duplicates what ck_fun() would do, including * its invocation of a fresh chain of op checkers. */ op_free(op); return newUNOP(OP_REQUIRE, 0, newDEFSVOP()); } argop = cUNOPx(op)->op_first; if(argop->op_type == OP_CONST && (argop->op_private & OPpCONST_BARE)) { /* * Bareword argument gets special handling in standard * checker, which we'd rather not interfere with by the * process that we'd need to use a maybesquashhints op. * Fortunately, we don't need access to the runtime * argument in this case: we know it must be a module * name, so we definitely want to squash hints at runtime. * So build op tree with an unconditional squashhints op. */ op = THX_nxck_require(aTHX_ op); op = append_list(OP_LINESEQ, (LISTOP*)newOP_squashhints(), (LISTOP*)op); } else { /* * Whether we want to squash hints depends on whether * the argument at runtime is a version number or not. * So we wrap the argument op, separating it from the * require op. */ OP *sib = OpSIBLING(argop); OpLASTSIB_set(argop, NULL); argop = newOP_maybesquashhints(op_scalar(argop)); OpMAYBESIB_set(argop, sib, op); cUNOPx(op)->op_first = argop; } op = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), op); op->op_type = OP_LEAVE; op->op_ppaddr = PL_ppaddr[OP_LEAVE]; op->op_flags |= OPf_PARENS; return op; } #endif /* Q_MUST_WORKAROUND */ MODULE = Lexical::SealRequireHints PACKAGE = Lexical::SealRequireHints PROTOTYPES: DISABLE void import(SV *classname) CODE: PERL_UNUSED_VAR(classname); #if Q_MUST_WORKAROUND wrap_op_checker(OP_REQUIRE, THX_myck_require, &THX_nxck_require); #endif /* Q_MUST_WORKAROUND */ void unimport(SV *classname, ...) CODE: PERL_UNUSED_VAR(classname); croak("Lexical::SealRequireHints does not support unimportation"); Lexical-SealRequireHints-0.011/t000755001750001750 013132500550 16511 5ustar00zeframzefram000000000000Lexical-SealRequireHints-0.011/t/before_warnings.t000444001750001750 213313132500550 22204 0ustar00zeframzefram000000000000# This script checks whether L:SRH takes effect sufficiently early. It is # specifically concerned with the "require Carp" or "require Carp::Heavy" # that warnings.pm may execute in a delayed manner. Either it must # be possible to delay loading warnings.pm until after L:SRH has taken # effect, so that its require statements will be appropriately altered # to avoid hint leakage, or L:SRH must cause Carp to load, so that it's # loaded without problematic hints in existence. We test this by loading # L:SRH first thing, and checking what's been loaded. This script, # as a result, can't use warnings.pm or anything that might load it. # The test is only applied on Perls where L:SRH makes a difference, # so that infrastructure modules can start using warnings in the future. BEGIN { if("$]" >= 5.012) { print "1..0 # SKIP no problem on this Perl\n"; exit 0; } } BEGIN { print "1..1\n"; } use Lexical::SealRequireHints; BEGIN { if(exists($INC{"warnings.pm"}) && !(exists($INC{"Carp.pm"}) && exists($INC{"Carp/Heavy.pm"}))) { print "not ok 1\n"; exit 1; } } print "ok 1\n"; exit 0; 1; Lexical-SealRequireHints-0.011/t/before_warnings_pp.t000444001750001750 25313132500550 22664 0ustar00zeframzefram000000000000# No "use warnings" here because of the unique requirements of # before_warnings.t. do "./t/setup_pp.pl" or die $@ || $!; do "./t/before_warnings.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/context.t000444001750001750 153513132500550 20523 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More tests => 14; BEGIN { use_ok "Lexical::SealRequireHints"; } BEGIN { unshift @INC, "./t/lib"; } my $retval; eval { $retval = require t::context_0; 1 }; is $@, ""; is $retval, "t::context_0 return"; eval { $retval = require t::context_0; 1 }; is $@, ""; is $retval, 1; eval { $retval = [ require t::context_1 ]; 1 }; is $@, ""; is_deeply $retval, ["t::context_1 return"]; eval { $retval = [ require t::context_1 ]; 1 }; is $@, ""; is_deeply $retval, [1]; eval { require t::context_2; 1 }; is $@, ""; eval { require t::context_2; 1 }; is $@, ""; sub diecxt() { die wantarray ? "ARRAY\n" : defined(wantarray) ? "SCALAR\n" : "VOID\n"; } eval { $retval = require(diecxt()); 1 }; is $@, "SCALAR\n"; eval { $retval = [ require(diecxt()) ]; 1 }; is $@, "SCALAR\n"; eval { require(diecxt()); 1 }; is $@, "SCALAR\n"; 1; Lexical-SealRequireHints-0.011/t/context_pp.t000444001750001750 15113132500550 21173 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/context.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/defsv.t000444001750001750 125113132500550 20141 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More tests => 5; BEGIN { use_ok "Lexical::SealRequireHints"; } BEGIN { unshift @INC, "./t/lib"; } SKIP: { skip "CORE::GLOBAL::require breaks require() on this perl", 4 if defined(&CORE::GLOBAL::require) && "$]" < 5.015005; my $retval; eval q{ our $_ = "t/context_0.pm"; $retval = require; 1 }; is $@, ""; is $retval, "t::context_0 return"; SKIP: { skip "no lexical \$_ on this perl", 2 if "$]" < 5.009001 || "$]" >= 5.023004; eval q{ no warnings "$]" >= 5.017009 ? "experimental" : "deprecated"; my $_ = "t/context_1.pm"; $retval = require; 1; }; is $@, ""; is $retval, "t::context_1 return"; } } 1; Lexical-SealRequireHints-0.011/t/eval.t000444001750001750 44013132500550 17740 0ustar00zeframzefram000000000000use warnings; use strict; BEGIN { if("$]" < 5.006001) { require Test::More; Test::More::plan(skip_all => "core bug makes this test crash"); } } use Test::More tests => 5; BEGIN { use_ok "Lexical::SealRequireHints"; } BEGIN { unshift @INC, "./t/lib"; } use t::eval_0; ok 1; 1; Lexical-SealRequireHints-0.011/t/eval_pp.t000444001750001750 14613132500550 20442 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/eval.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/idempotent.t000444001750001750 15213132500550 21161 0ustar00zeframzefram000000000000use warnings; use strict; alarm 10; use Lexical::SealRequireHints; do "./t/seal.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/idempotent_pp.t000444001750001750 15413132500550 21662 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/idempotent.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/override.t000444001750001750 305313132500550 20653 0ustar00zeframzefram000000000000use warnings; use strict; BEGIN { if("$]" < 5.007002) { require Test::More; Test::More::plan(skip_all => "CORE::GLOBAL::require can't work on this perl"); } } use Test::More tests => 10; our @warnings; BEGIN { $^W = 1; $SIG{__WARN__} = sub { push @warnings, $_[0] }; } our $have_runtime_hint_hash; BEGIN { $have_runtime_hint_hash = "$]" >= 5.009004; } sub test_runtime_hint_hash($$) { SKIP: { skip "no runtime hint hash", 1 unless $have_runtime_hint_hash; is +((caller(0))[10] || {})->{$_[0]}, $_[1]; } } our @require_activity; BEGIN { my $next_require = defined(&CORE::GLOBAL::require) ? \&CORE::GLOBAL::require : sub { CORE::require($_[0]) }; no warnings "redefine"; *CORE::GLOBAL::require = sub { push @require_activity, "a"; return $next_require->(@_); }; } BEGIN { use_ok "Lexical::SealRequireHints"; } BEGIN { unshift @INC, "./t/lib"; } BEGIN { my $next_require = defined(&CORE::GLOBAL::require) ? \&CORE::GLOBAL::require : sub { CORE::require($_[0]) }; no warnings "redefine"; no warnings "prototype"; *CORE::GLOBAL::require = sub ($) { push @require_activity, "b"; return $next_require->(@_); }; } BEGIN { $^H |= 0x20000 if "$]" < 5.009004; $^H{"Lexical::SealRequireHints/test"} = 1; } BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; @require_activity = (); } use t::seal_0; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; is $^H{"Lexical::SealRequireHints/test0"}, 1; isnt scalar(@require_activity), 0; is_deeply \@require_activity, [("b","a") x (@require_activity>>1)]; } is_deeply \@warnings, []; 1; Lexical-SealRequireHints-0.011/t/override_pp.t000444001750001750 15213132500550 21327 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/override.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/package.t000444001750001750 62013132500550 20404 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More tests => 2; BEGIN { unshift @INC, "./t/lib"; } our $native_package; BEGIN { our $package; { package Foo; require t::package_0; } $native_package = $package; $package = undef; delete $INC{"t/package_0.pm"}; } BEGIN { use_ok "Lexical::SealRequireHints"; } our $package; { package Foo; require t::package_0; } is $package, $native_package; 1; Lexical-SealRequireHints-0.011/t/package_pp.t000444001750001750 15113132500550 21102 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/package.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/pod_cvg.t000444001750001750 33513132500550 20435 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More; plan skip_all => "Test::Pod::Coverage not available" unless eval "use Test::Pod::Coverage; 1"; Test::Pod::Coverage::all_pod_coverage_ok({also_private=>[qr/\Aunimport\z/]}); 1; Lexical-SealRequireHints-0.011/t/pod_cvg_pp.t000444001750001750 15113132500550 21130 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/pod_cvg.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/pod_syn.t000444001750001750 23613132500550 20467 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More; plan skip_all => "Test::Pod not available" unless eval "use Test::Pod 1.00; 1"; Test::Pod::all_pod_files_ok(); 1; Lexical-SealRequireHints-0.011/t/seal.t000444001750001750 355413132500550 17766 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More tests => 31; our @warnings; BEGIN { $^W = 1; $SIG{__WARN__} = sub { push @warnings, $_[0] }; } our $have_runtime_hint_hash; BEGIN { $have_runtime_hint_hash = "$]" >= 5.009004; } sub test_runtime_hint_hash($$) { SKIP: { skip "no runtime hint hash", 1 unless $have_runtime_hint_hash; is +((caller(0))[10] || {})->{$_[0]}, $_[1]; } } BEGIN { use_ok "Lexical::SealRequireHints"; } BEGIN { unshift @INC, "./t/lib"; } BEGIN { $^H |= 0x20000 if "$]" < 5.009004; $^H{"Lexical::SealRequireHints/test"} = 1; } BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; } test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; use t::seal_0; test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; require t::seal_1; t::seal_1->import; is $^H{"Lexical::SealRequireHints/test"}, 1; } test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; } test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; use t::seal_0; test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; require t::seal_1; t::seal_1->import; is $^H{"Lexical::SealRequireHints/test"}, 1; } test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, 1; is $^H{"Lexical::SealRequireHints/test0"}, 2; is $^H{"Lexical::SealRequireHints/test1"}, 2; } test_runtime_hint_hash "Lexical::SealRequireHints/test", 1; test_runtime_hint_hash "Lexical::SealRequireHints/test0", 2; test_runtime_hint_hash "Lexical::SealRequireHints/test1", 2; BEGIN { is +(1 + require t::seal_2), 11; } BEGIN { eval { require t::seal_3; }; like $@, qr/\Aseal_3 death\n/; } BEGIN { eval { require t::seal_4; }; like $@, qr/\Aseal_4 death\n/; } is_deeply \@warnings, []; 1; Lexical-SealRequireHints-0.011/t/seal_pp.t000444001750001750 14613132500550 20437 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/seal.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/setup_pp.pl000444001750001750 102113132500550 21034 0ustar00zeframzefram000000000000if("$]" < 5.007002 || ("$]" >= 5.009004 && "$]" < 5.010001)) { require Test::More; Test::More::plan(skip_all => "pure Perl Lexical::SealRequireHints can't work on this perl"); } require XSLoader; my $orig_load = \&XSLoader::load; # Suppress redefinition warning, without loading warnings.pm, for the # benefit of before_warnings.t. BEGIN { ${^WARNING_BITS} = ""; } *XSLoader::load = sub { die "XS loading disabled for Lexical::SealRequireHints" if ($_[0] || "") eq "Lexical::SealRequireHints"; goto &$orig_load; }; 1; Lexical-SealRequireHints-0.011/t/swash.t000444001750001750 213113132500550 20155 0ustar00zeframzefram000000000000use warnings; use strict; BEGIN { if("$]" < 5.008) { require Test::More; Test::More::plan(skip_all => "swash loading disagrees with infrastructure"); } } use Test::More tests => 6; use Lexical::SealRequireHints; BEGIN { unshift @INC, "./t/lib"; } BEGIN { SKIP: { skip "Perl 5.11 doesn't work with localised hint bit", 2 if "$]" >= 5.011 && "$]" < 5.012; $^H = 0; is $^H, 0; require t::package_0; is $^H, 0; } } BEGIN { %^H = ( foo=>1, bar=>2 ); $^H |= 0x20000; is_deeply [ sort keys(%^H) ], [qw(bar foo)]; if(exists $INC{"utf8.pm"}) { SKIP: { skip "utf8.pm loaded too early ". "(breaking following tests)", 1; } } else { pass; } } BEGIN { # Up to Perl 5.7.0, it is the compilation of this regexp match # that triggers swash loading. From Perl 5.7.1 onwards, it # is the execution. Hence for this test we must arrange for # both to occur between the surrounding segments of test code. # A BEGIN block achieves this nicely. my $x = "foo\x{666}"; $x =~ /foo\p{Alnum}/; } BEGIN { ok exists($INC{"utf8.pm"}); is_deeply [ sort keys(%^H) ], [qw(bar foo)]; } 1; Lexical-SealRequireHints-0.011/t/swash_pp.t000444001750001750 14713132500550 20641 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/swash.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/threads.t000444001750001750 263413132500550 20472 0ustar00zeframzefram000000000000use warnings; use strict; BEGIN { eval { require threads; }; if($@ =~ /\AThis Perl not built to support threads/) { require Test::More; Test::More::plan(skip_all => "non-threading perl build"); } if($@ ne "") { require Test::More; Test::More::plan(skip_all => "threads unavailable"); } eval { require Thread::Semaphore; }; if($@ ne "") { require Test::More; Test::More::plan(skip_all => "Thread::Semaphore unavailable"); } eval { require threads::shared; }; if($@ ne "") { require Test::More; Test::More::plan(skip_all => "threads::shared unavailable"); } } use threads; use Test::More tests => 3; use Thread::Semaphore (); use threads::shared; BEGIN { unshift @INC, "./t/lib"; } alarm 10; # failure mode may involve an infinite loop my $done1 = Thread::Semaphore->new(0); my $exit1 = Thread::Semaphore->new(0); my $done2 = Thread::Semaphore->new(0); my $exit2 = Thread::Semaphore->new(0); my $ok1 :shared; my $thread1 = threads->create(sub { my $ok = 1; eval(q{ use Lexical::SealRequireHints; require t::context_1; 1; }) or $ok = 0; $ok1 = $ok; $done1->up; $exit1->down; }); $done1->down; ok $ok1; my $ok2 :shared; my $thread2 = threads->create(sub { my $ok = 1; eval(q{ use Lexical::SealRequireHints; require t::context_2; 1; }) or $ok = 0; $ok2 = $ok; $done2->up; $exit2->down; }); $done2->down; ok $ok2; $exit1->up; $exit2->up; $thread1->join; $thread2->join; ok 1; 1; Lexical-SealRequireHints-0.011/t/threads_pp.t000444001750001750 15113132500550 21141 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/threads.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/version_check.t000444001750001750 137713132500550 21665 0ustar00zeframzefram000000000000use warnings; use strict; use Test::More tests => 19; BEGIN { use_ok "Lexical::SealRequireHints"; } no warnings "portable"; foreach( q{ use 5.006; }, q{ use 5.6.0; }, q{ use v5.6.0; }, q{ require 5.006; }, q{ require 5.6.0; }, q{ require v5.6.0; }, q{ require(5.006); }, ("$]" >= 5.009002 ? ( q{ my $v = 5.6.0; require($v); }, q{ my $v = 5.6.0; require($v); }, ) : ("", "")), ) { eval $_; is $@, ""; } foreach( q{ use 6.006; }, q{ use 6.6.0; }, q{ use v6.6.0; }, q{ require 6.006; }, q{ require 6.6.0; }, q{ require v6.6.0; }, q{ require(6.006); }, ("$]" >= 5.009002 ? ( q{ my $v = 6.6.0; require($v); }, q{ my $v = 6.6.0; require($v); }, ) : ("use 6.006;", "use 6.006;")), ) { eval $_; like $@, qr/\APerl v6\.6\.0 required/; } 1; Lexical-SealRequireHints-0.011/t/version_check_pp.t000444001750001750 15713132500550 22337 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/version_check.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/version_feature.t000444001750001750 72713132500550 22221 0ustar00zeframzefram000000000000use warnings; use strict; BEGIN { if("$]" < 5.009005) { require Test::More; Test::More::plan(skip_all => "no version-implied features on this perl"); } } use Test::More tests => 4; BEGIN { use_ok "Lexical::SealRequireHints"; } eval q{ use 5.009005; sub t0 { say "foo"; } }; is $@, ""; eval q{ no warnings "portable"; use 5.9.5; sub t1 { say "foo"; } }; is $@, ""; eval q{ no warnings "portable"; use v5.9.5; sub t2 { say "foo"; } }; is $@, ""; 1; Lexical-SealRequireHints-0.011/t/version_feature_pp.t000444001750001750 16113132500550 22710 0ustar00zeframzefram000000000000use warnings; use strict; do "./t/setup_pp.pl" or die $@ || $!; do "./t/version_feature.t" or die $@ || $!; 1; Lexical-SealRequireHints-0.011/t/lib000755001750001750 013132500550 17257 5ustar00zeframzefram000000000000Lexical-SealRequireHints-0.011/t/lib/t000755001750001750 013132500550 17522 5ustar00zeframzefram000000000000Lexical-SealRequireHints-0.011/t/lib/t/context_0.pm000444001750001750 35013132500550 22076 0ustar00zeframzefram000000000000package t::context_0; { use 5.006; } use warnings; use strict; die "t::context_0 sees array context at file scope" if wantarray; die "t::context_0 sees void context at file scope" unless defined wantarray; "t::context_0 return"; Lexical-SealRequireHints-0.011/t/lib/t/context_1.pm000444001750001750 35013132500550 22077 0ustar00zeframzefram000000000000package t::context_1; { use 5.006; } use warnings; use strict; die "t::context_1 sees array context at file scope" if wantarray; die "t::context_1 sees void context at file scope" unless defined wantarray; "t::context_1 return"; Lexical-SealRequireHints-0.011/t/lib/t/context_2.pm000444001750001750 35013132500550 22100 0ustar00zeframzefram000000000000package t::context_2; { use 5.006; } use warnings; use strict; die "t::context_2 sees array context at file scope" if wantarray; die "t::context_2 sees void context at file scope" unless defined wantarray; "t::context_2 return"; Lexical-SealRequireHints-0.011/t/lib/t/eval_0.pm000444001750001750 131413132500550 21362 0ustar00zeframzefram000000000000package t::eval_0; use warnings; use strict; use Test::More 0.41; sub _ok_no_eval() { my $lastsub = ""; my $i = 0; while(1) { my @c = caller($i); unless(@c) { ok 0; diag "failed to find main program in stack trace"; return; } my $sub = $c[3]; if($sub eq "main::BEGIN") { ok 1; return; } my $type = $sub ne "(eval)" ? "subroutine" : $c[7] ? "require" : defined($c[6]) ? "string eval" : "block eval"; if($type =~ /eval/ && !($lastsub eq "t::eval_0::BEGIN" && $type eq "block eval")) { ok 0; diag "have $type between module and main program"; return; } $lastsub = $sub; $i++; } } BEGIN { _ok_no_eval(); } _ok_no_eval(); sub import { _ok_no_eval(); } 1; Lexical-SealRequireHints-0.011/t/lib/t/package_0.pm000444001750001750 4113132500550 21762 0ustar00zeframzefram000000000000$main::package = __PACKAGE__; 1; Lexical-SealRequireHints-0.011/t/lib/t/seal_0.pm000444001750001750 52213132500550 21337 0ustar00zeframzefram000000000000package t::seal_0; use warnings; use strict; use Test::More; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, undef; } main::test_runtime_hint_hash "Lexical::SealRequireHints/test", undef; sub import { is $^H{"Lexical::SealRequireHints/test"}, 1; $^H |= 0x20000 if "$]" < 5.009004; $^H{"Lexical::SealRequireHints/test0"}++; } 1; Lexical-SealRequireHints-0.011/t/lib/t/seal_1.pm000444001750001750 52213132500550 21340 0ustar00zeframzefram000000000000package t::seal_1; use warnings; use strict; use Test::More; BEGIN { is $^H{"Lexical::SealRequireHints/test"}, undef; } main::test_runtime_hint_hash "Lexical::SealRequireHints/test", undef; sub import { is $^H{"Lexical::SealRequireHints/test"}, 1; $^H |= 0x20000 if "$]" < 5.009004; $^H{"Lexical::SealRequireHints/test1"}++; } 1; Lexical-SealRequireHints-0.011/t/lib/t/seal_2.pm000444001750001750 6313132500550 21321 0ustar00zeframzefram000000000000package t::seal_2; use warnings; use strict; 10; Lexical-SealRequireHints-0.011/t/lib/t/seal_3.pm000444001750001750 12313132500550 21337 0ustar00zeframzefram000000000000package t::seal_3; use warnings; use strict; BEGIN { die "seal_3 death\n"; } 1; Lexical-SealRequireHints-0.011/t/lib/t/seal_4.pm000444001750001750 11113132500550 21335 0ustar00zeframzefram000000000000package t::seal_4; use warnings; use strict; die "seal_4 death\n"; 1;