❯ gdb --args perl -M5.041 -MDevel::Peek=Dump -Mexperimental=class -E'class Foo {}; Dump Foo->new'GNU gdb (GDB; openSUSE Tumbleweed) 14.2Copyright (C) 2023 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law.Type "show copying" and "show warranty" for details.This GDB was configured as "x86_64-suse-linux".Type "show configuration" for configuration details.For bug reporting instructions, please see:<http://bugs.opensuse.org/>.Find the GDB manual and other documentation resources online at:    <http://www.gnu.org/software/gdb/documentation/>.For help, type "help".Type "apropos word" to search for commands related to "word"...Reading symbols from perl...(gdb) rStarting program: /home/larsd/.local/share/perlbrew/perls/perl-5.41.8/bin/perl -M5.041 -MDevel::Peek=Dump -Mexperimental=class -Eclass\ Foo\ \{\}\;\ Dump\ Foo-\>new[Thread debugging using libthread_db enabled]Using host libthread_db library "/lib64/libthread_db.so.1".SV = IV(0x55555555b6b8) at 0x55555555b6c8  REFCNT = 1  FLAGS = (ROK)  RV = 0x55555555b530  SV = PVOBJ(0x555555596390) at 0x55555555b530    REFCNT = 1    FLAGS = (OBJECT)    STASH = 0x5555555f4cc0      "Foo"    MAXFIELD = -1    FIELDS = 0x555555596300Program received signal SIGSEGV, Segmentation fault.0x00007ffff7c9ac2f in Perl_do_sv_dump (level=1, file=0x555555576da0, sv=0x55555555b530, nest=1, maxnest=4, dumpops=false, pvlim=0)    at dump.c:28522852                PADNAME **pname = PadnamelistARRAY(HvAUX(SvSTASH(sv))->xhv_class_fields);(gdb) bt full#0  0x00007ffff7c9ac2f in Perl_do_sv_dump (level=1, file=0x555555576da0, sv=0x55555555b530, nest=1, maxnest=4, dumpops=false,    pvlim=0) at dump.c:2852        count = <optimized out>        svp = 0x555555596300        pname = <optimized out>        d = 0x55555555b8f0        s = <optimized out>        flags = <optimized out>        type = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>#1  0x00007ffff7c999c7 in Perl_do_sv_dump (level=level@entry=0, file=0x555555576da0, sv=sv@entry=0x55555555b6c8, nest=nest@entry=0,    maxnest=maxnest@entry=4, dumpops=dumpops@entry=false, pvlim=0) at dump.c:2170        d = 0x55555555b4e8        s = <optimized out>        flags = <optimized out>        type = 1        p_ = <optimized out>        p_ = <optimized out>--Type <RET> for more, q to quit, c to continue without paging--c        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>        p_ = <optimized out>#2  0x00007ffff7bec299 in S_do_dump (sv=0x55555555b6c8, lim=4)    at /home/larsd/.local/share/perlbrew/build/perl-5.41.8/perl-5.41.8/ext/Devel-Peek/Peek.xs:334        pv_lim_sv = <optimized out>        pv_lim = 0        dumpop = 0x55555559bc40        save_dumpindent = 4#3  0x00007ffff7bec34e in S_pp_dump () at /home/larsd/.local/share/perlbrew/build/perl-5.41.8/perl-5.41.8/ext/Devel-Peek/Peek.xs:347        lim = <optimized out>#4  0x00007ffff7d97b73 in Perl_runops_standard () at run.c:41        op = <optimized out>#5  0x00007ffff7c7a839 in S_run_body (oldscope=<optimized out>) at perl.c:2883No locals.#6  perl_run (my_perl=<optimized out>) at perl.c:2798        oldscope = 1        ret = <optimized out>        cur_env = {je_prev = 0x7ffff7fb64a0 <PL_start_env>, je_buf = {{__jmpbuf = {140737488342840, -1470579409188483830, 0,                140737488342888, 140737354125312, 93824992247120, 1470579407616412938, 1470597209553177866}, __mask_was_saved = 0,              __saved_mask = {__val = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 93458488360960, 140737346446865, 1600877609,                  16371054362459106048, 140737488342840, 6}}}}, je_ret = 0, je_mustcatch = false, je_old_delaymagic = 0,          je_old_stack_hwm = 140737488342888}        p_ = <optimized out>#7  0x0000555555555232 in main (argc=<optimized out>, argv=<optimized out>, env=<optimized out>) at perlmain.c:127        exitstatus = <optimized out>        i = <optimized out>

Site configuration information for perl 5.41.8:Configured by larsd at Thu Jan 30 10:51:22 CET 2025.Summary of my perl5 (revision 5 version 41 subversion 8) configuration:     Platform:    osname=linux    osvers=6.12.9-1-default    archname=x86_64-linux-ld    uname='linux denkheft 6.12.9-1-default #1 smp preempt_dynamic fri jan 10 08:30:10 utc 2025 (0ae2136) x86_64 x86_64 x86_64 gnulinux '    config_args='-de -Dprefix=/home/larsd/.local/share/perlbrew/perls/perl-5.41.8 -Dusedevel -Duseshrplib -Dman1dir=none -Dman3dir=none -Dcf_email=root@localhost -Dperladmin=root@localhost -Dusemorebits -Dusesitecustomize -Dusedevel -Accflags=-DNO_TAINT_SUPPORT -Accflags=-march=native -Accflags=-fPIC -Accflags=-DPERL_DISABLE_PMC -Accflags=-ggdb -Aeval:scriptdir=/home/larsd/.local/share/perlbrew/perls/perl-5.41.8/bin'    hint=recommended    useposix=true    d_sigaction=define    useithreads=undef    usemultiplicity=undef    use64bitint=define    use64bitall=define    uselongdouble=define    usemymalloc=n    default_inc_excludes_dot=define  Compiler:    cc='cc'    ccflags ='-DNO_TAINT_SUPPORT -march=native -fPIC -DPERL_DISABLE_PMC -ggdb -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2'    optimize='-O2'    cppflags='-DNO_TAINT_SUPPORT -march=native -fPIC -DPERL_DISABLE_PMC -ggdb -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include'    ccversion=''    gccversion='14.2.1 20241007 [revision 4af44f2cf7d281f3e4f3957efce10e8b2ccb2ad3]'    gccosandvers=''    intsize=4    longsize=8    ptrsize=8    doublesize=8    byteorder=12345678    doublekind=3    d_longlong=define    longlongsize=8    d_longdbl=define    longdblsize=16    longdblkind=3    ivtype='long'    ivsize=8    nvtype='long double'    nvsize=16    Off_t='off_t'    lseeksize=8    alignbytes=16    prototype=define  Linker and Libraries:    ld='cc'    ldflags =' -fstack-protector-strong -L/usr/local/lib'    libpth=/usr/local/lib /lib/../lib64 /usr/lib/../lib64 /lib /usr/lib /lib64 /usr/lib64 /usr/local/lib64    libs=-lpthread -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat    perllibs=-lpthread -ldl -lm -lcrypt -lutil -lc    libc=/lib/../lib64/libc.so.6    so=so    useshrplib=true    libperl=libperl.so    gnulibc_version='2.40'  Dynamic Linking:    dlsrc=dl_dlopen.xs    dlext=so    d_dlsymun=undef    ccdlflags='-Wl,-E -Wl,-rpath,/home/larsd/.local/share/perlbrew/perls/perl-5.41.8/lib/5.41.8/x86_64-linux-ld/CORE'    cccdlflags='-fPIC'    lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector-strong'---@INC for perl 5.41.8:    /home/larsd/.local/share/perlbrew/perls/perl-5.41.8/lib/site_perl/5.41.8/x86_64-linux-ld    /home/larsd/.local/share/perlbrew/perls/perl-5.41.8/lib/site_perl/5.41.8    /home/larsd/.local/share/perlbrew/perls/perl-5.41.8/lib/5.41.8/x86_64-linux-ld    /home/larsd/.local/share/perlbrew/perls/perl-5.41.8/lib/5.41.8---Environment for perl 5.41.8:    HOME=/home/larsd    LANG=de_DE.UTF-8    LANGUAGE=    LC_CTYPE=de_DE.UTF-8    LD_LIBRARY_PATH (unset)    LOGDIR (unset)    PATH=/home/larsd/.local/share/perlbrew/bin:/home/larsd/.local/share/perlbrew/perls/perl-5.41.8/bin:/home/larsd/.local/bin:/home/larsd/.local/share/asdf/shims:/home/larsd/.local/share/asdf/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin    PERLBREW_HOME=/home/larsd/.local/share/perlbrew    PERLBREW_MANPATH=/home/larsd/.local/share/perlbrew/perls/perl-5.41.8/man    PERLBREW_PATH=/home/larsd/.local/share/perlbrew/bin:/home/larsd/.local/share/perlbrew/perls/perl-5.41.8/bin    PERLBREW_PERL=perl-5.41.8    PERLBREW_ROOT=/home/larsd/.local/share/perlbrew    PERLBREW_SHELLRC_VERSION=0.98    PERLBREW_VERSION=0.98    PERLCRITIC=/home/larsd/.config/perlcriticrc    PERLREPL_HISTFILE=/home/larsd/.local/state/perlreplhist    PERLTIDY=/home/larsd/.config/perltidyrc    PERL_BADLANG (unset)    PERL_CPANM_HOME=/home/larsd/.cache/cpanm    PERL_CPANM_OPT=-M https://cpan.metacpan.org/ --verify --with-recommends --with-suggests --with-develop --with-all-features    PERL_EXTUTILS_AUTOINSTALL=--default-deps    PERL_MM_NONINTERACTIVE=1    PERL_MM_USE_DEFAULT=1    SHELL=/bin/bash