This is a bug report for perl from Niko Tyni <[email protected]>, generated with the help of perlbug 1.39 running under perl 5.11.4.
----------------------------------------------------------------- A suitable combination of tainted @INC, the '-t' switch and stubs for undefined constants causes an assertion failure with -DDEBUGGING and intermittent segmentation faults otherwise. Originally reported as http://bugs.debian.org/565703, reproducible on current bleadperl: % ./perl -t -Ilib -e 'unshift @INC, shift; require Fcntl' foo Insecure dependency in require while running with -t switch at -e line 1. Insecure dependency in require while running with -t switch at -e line 1. Insecure dependency in require while running with -t switch at lib/Fcntl.pm line 58. Insecure dependency in require while running with -t switch at lib/Fcntl.pm line 58. Insecure dependency in require while running with -t switch at lib/Fcntl.pm line 58. Insecure dependency in require while running with -t switch at lib/Fcntl.pm line 62. Insecure dependency in require while running with -t switch at lib/Fcntl.pm line 62. Insecure dependency in require while running with -t switch at lib/Fcntl.pm line 62. perl: gv.c:241: Perl_gv_init: Assertion `!((gv)->sv_flags & 0x00004000)' failed. zsh: abort (core dumped) ./perl -t -Ilib -e 'unshift @INC, shift; require Fcntl' foo Other variants include % echo 'XSLoader::load(q(Fcntl))' > T.pm && ./perl -Ilib -MXSLoader -I. -t -e 'unshift @INC, shift; require T; *a = \&{"Fcntl::S_IFWHT"}' foo Insecure dependency in require while running with -t switch at -e line 1. [...] perl: mg.c:219: Perl_mg_get: Assertion `!(((_svmagic)->sv_flags & (0x40000000|0x00040000)) == (0x40000000|0x00040000))' failed. and % echo 'XSLoader::load(q(POSIX))' > T.pm && ./perl -Ilib -MXSLoader -I. -t -e 'unshift @INC, shift; require T; *a = \&{"POSIX::CLK_TCK"}' foo which fails in the same way. The problem seems to be related to the stubs for undefined constants; the ones used above are not defined on this platform. ./perl -Ilib -MPOSIX -E 'say POSIX::CLK_TCK' Your vendor has not defined POSIX macro CLK_TCK, used at -e line 1 ./perl -Ilib -MFcntl -E 'say Fcntl::S_IFWHT' Your vendor has not defined Fcntl macro S_IFWHT, used at -e line 1. Blead backtrace of the first case: Core was generated by `./perl -t -Ilib -e unshift @INC, shift; require Fcntl foo'. Program terminated with signal 6, Aborted. #0 0x00007f86090b5f55 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory. in ../nptl/sysdeps/unix/sysv/linux/raise.c (gdb) bt #0 0x00007f86090b5f55 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #1 0x00007f86090b8d90 in *__GI_abort () at abort.c:88 #2 0x00007f86090af07a in *__GI___assert_fail (assertion=0x74b9d8 "!((gv)->sv_flags & 0x00004000)", file=<value optimized out>, line=241, function=0x7524df "Perl_gv_init") at assert.c:78 #3 0x0000000000464e44 in Perl_gv_init (my_perl=0xd20010, gv=0xd7ab10, stash=0xd42898, name=0xd88528 "S_IFWHT", len=7, multi=2) at gv.c:241 #4 0x000000000046c902 in Perl_gv_fetchpvn_flags (my_perl=0xd20010, nambeg=0xd88528 "S_IFWHT", full_len=7, flags=3, sv_type=SVt_PVCV) at gv.c:1142 #5 0x000000000046af9b in Perl_gv_fetchsv (my_perl=0xd20010, name=0xd885c0, flags=3, sv_type=SVt_PVCV) at gv.c:911 #6 0x000000000043eec0 in Perl_ck_rvconst (my_perl=0xd20010, o=0xd89670) at op.c:6788 #7 0x000000000042c343 in Perl_newUNOP (my_perl=0xd20010, type=17, flags=0, first=0xd89630) at op.c:3109 #8 0x000000000043d7b4 in Perl_newCVREF (my_perl=0xd20010, flags=0, o=0xd89630) at op.c:6393 #9 0x00000000004991f2 in Perl_yylex (my_perl=0xd20010) at toke.c:6056 #10 0x00000000004c0fd9 in Perl_yyparse (my_perl=0xd20010) at perly.c:414 #11 0x000000000065280f in S_doeval (my_perl=0xd20010, gimme=2, startop=0x0, outside=0x0, seq=0) at pp_ctl.c:3089 #12 0x0000000000659836 in Perl_pp_require (my_perl=0xd20010) at pp_ctl.c:3657 #13 0x0000000000518cb7 in Perl_runops_debug (my_perl=0xd20010) at dump.c:2049 #14 0x00000000004548ea in S_run_body (my_perl=0xd20010, oldscope=1) at perl.c:2308 #15 0x0000000000453bb2 in perl_run (my_perl=0xd20010) at perl.c:2233 #16 0x000000000042302d in main (argc=6, argv=0x7fffb80bc108, env=0x7fffb80bc140) at perlmain.c:117 ----------------------------------------------------------------- --- Flags: category=core severity=low --- Site configuration information for perl 5.11.4: Configured by niko at Sun Jan 24 20:28:38 EET 2010. Summary of my perl5 (revision 5 version 11 subversion 4) configuration: Commit id: fe61459e95657c432074058bd8854fec03559335 Platform: osname=linux, osvers=2.6.32-trunk-amd64, archname=x86_64-linux-gnu-thread-multi uname='linux madeleine 2.6.32-trunk-amd64 #1 smp sun jan 10 22:40:40 utc 2010 x86_64 gnulinux ' config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=x86_64-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.11 -Darchlib=/usr/lib/perl/5.11 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.11.4 -Dsitearch=/usr/local/lib/perl/5.11.4 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -DDEBUGGING=both -Doptimize=-O0 -Dusedevel -Uuseshrplib -des' hint=recommended, useposix=true, d_sigaction=define useithreads=define, usemultiplicity=define useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef use64bitint=define, use64bitall=define, uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O0 -g', cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include' ccversion='', gccversion='4.4.3 20100108 (prerelease)', gccosandvers='' intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16 ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=8, prototype=define Linker and Libraries: ld='cc', ldflags =' -fstack-protector -L/usr/local/lib' libpth=/usr/local/lib /lib /usr/lib /lib64 /usr/lib64 libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc -lgdbm_compat perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc libc=/lib/libc-2.10.2.so, so=so, useshrplib=false, libperl=libperl.a gnulibc_version='2.10.2' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E' cccdlflags='-fPIC', lddlflags='-shared -O0 -g -L/usr/local/lib -fstack-protector' Locally applied patches: --- @INC for perl 5.11.4: lib /usr/local/lib/perl/5.11.4 /usr/local/share/perl/5.11.4 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.11 /usr/share/perl/5.11 . --- Environment for perl 5.11.4: HOME=/home/niko LANG=en_US.UTF-8 LANGUAGE (unset) LC_CTYPE=fi_FI.UTF-8 LD_LIBRARY_PATH (unset) LOGDIR (unset) PATH=/home/niko/bin:/home/niko/bin:/home/niko/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/sbin:/usr/sbin:/sbin:/usr/sbin PERL_BADLANG (unset) SHELL=/bin/zsh -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". 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