t/io/utf8.t See if file seeking works
t/japh/abigail.t Obscure tests
t/lib/1_compile.t See if the various libraries and extensions compile
-t/lib/args_assert.t Check that all PERL_ARGS_ASSERT* macros are used
t/lib/Cname.pm Test charnames in regexes (op/pat.t)
t/lib/common.pl Helper for lib/{warnings,feature}.t
t/lib/commonsense.t See if configuration meets basic needs
t/lib/h2ph.pht Generated output from h2ph.h by h2ph, for comparison
t/lib/locale/latin1 Part of locale.t in Latin 1
t/lib/locale/utf8 Part of locale.t in UTF8
-t/lib/maintainers.t Test that Porting/Maintaners.pl is up to date
-t/lib/manifest.t Test that this MANIFEST file is well formed
t/lib/mypragma.pm An example user pragma
t/lib/mypragma.t Test the example user pragma
t/lib/no_load.t Test that some modules don't load others
t/op/yadayada.t See if ..., !!! and ??? work
t/perl.supp Perl valgrind suppressions
t/pod/diag.t Test completeness of perldiag.pod
+t/porting/args_assert.t Check that all PERL_ARGS_ASSERT* macros are used
t/porting/checkcase.t Check whether we are case-insensitive-fs-friendly
+t/porting/maintainers.t Test that Porting/Maintaners.pl is up to date
+t/porting/manifest.t Test that this MANIFEST file is well formed
t/README Instructions for regression tests
t/re/pat_advanced.t See if advanced esoteric patterns work
t/re/pat_advanced_thr.t See if advanced esoteric patterns work in another thread