Public bug reported:
For using perl in C++ programs unfortunately a simple call to perl_clone
causes a segfault. The problem does not happen on trusty, but does on
later Ubuntu iterations. Could be perl version (5.18 OK vs 5.22/5.24
newer that fault) but as each platform only supports one version of perl
can't easily test the others.
(gdb) run
Starting program: /a.out
b[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7a6f13a in Perl_padnamelist_dup () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.24
(gdb) bt
#0 0x00007ffff7a6f13a in Perl_padnamelist_dup () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.24
#1 0x00007ffff7adca9f in perl_clone () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.24
#2 0x000055555555492d in main () at test.c:10
(gdb) Quit
(gdb)
#0 0x00007ffff7a6f13a in Perl_padnamelist_dup () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.24
#1 0x00007ffff7adca9f in perl_clone () from
/usr/lib/x86_64-linux-gnu/libperl.so.5.24
#2 0x000055555555492d in main () at test.c:10
Sample system info from where broken:
Description: Ubuntu 16.04.2 LTS
Release: 16.04
perl | 5.22.1-9 | http://archive.ubuntu.com/ubuntu xenial/main amd64
Packages
libperl-dev | 5.22.1-9 | http://archive.ubuntu.com/ubuntu xenial/main amd64
Packages
to reproduce with docker:
docker run -t -i ubuntu:zesty bash
docker run -t -i ubuntu:yakkety bash
docker run -t -i ubuntu:xenial bash
ok with:
docker run -t -i ubuntu:trusty bash
then some packages:
apt-get update && apt-get install build-essential libperl-dev
finally the attached test.c file place and compile with:
and run with perl version:
trusty:
gcc -g test.c -I/usr/lib/perl/5.18.2/CORE/ -lperl && ./a.out
xenial/yakkety (yakkety might be 5.22.2):
gcc -g test.c -I/usr/lib/x86_64-linux-gnu/perl/5.22.1/CORE/ -lperl && ./a.out
zesty:
gcc -g test.c -I/usr/lib/x86_64-linux-gnu/perl/5.24.1/CORE/ -lperl && ./a.out
Others cause seg fault, trusty is fine.
** Affects: perl (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "test file that segfaults"
https://bugs.launchpad.net/bugs/1668450/+attachment/4827896/+files/test.c
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https://bugs.launchpad.net/bugs/1668450
Title:
perl_clone of libperl causes segfault on xenial, yakkety, zesty ok on
trusty
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