Description of problem:


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Start 'python'
2. In the interactive prompt, type:
import re2
re2.search('foo', 'foobar')

You get:
“python” terminated by signal SIGSEGV (Address boundary error)

Actual results:


Expected results:


Additional info:

In gdb:

gdb python
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
Copyright (C) 2013 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-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>... [^]
Reading symbols from /usr/bin/python2.7...Reading symbols from /usr/bin/python2.7...(no debugging symbols found)...done.
(no debugging symbols found)...done.
Missing separate debuginfos, use: debuginfo-install python-2.7.5-34.el7.x86_64
(gdb) run
Starting program: /bin/python
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Python 2.7.5 (default, Nov 20 2015, 02:00:19)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import re2
>>> re2.search('foo', 'foobar')

Program received signal SIGSEGV, Segmentation fault.
0x00007fffeff8dde0 in _compile(_object*, _object*, _object*) () from /usr/lib64/python2.7/site-packages/_re2.so
(gdb) bt
#0 0x00007fffeff8dde0 in _compile(_object*, _object*, _object*) () from /usr/lib64/python2.7/site-packages/_re2.so
#1 0x00007ffff7af5aa4 in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0
#2 0x00007ffff7af5860 in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0
#3 0x00007ffff7af70bd in PyEval_EvalCodeEx () from /lib64/libpython2.7.so.1.0
#4 0x00007ffff7af71c2 in PyEval_EvalCode () from /lib64/libpython2.7.so.1.0
#5 0x00007ffff7b105ff in run_mod () from /lib64/libpython2.7.so.1.0
#6 0x00007ffff7b126b0 in PyRun_InteractiveOneFlags () from /lib64/libpython2.7.so.1.0
#7 0x00007ffff7b1289e in PyRun_InteractiveLoopFlags () from /lib64/libpython2.7.so.1.0
#8 0x00007ffff7b12f2e in PyRun_AnyFileExFlags () from /lib64/libpython2.7.so.1.0
#9 0x00007ffff7b23b9f in Py_Main () from /lib64/libpython2.7.so.1.0
#10 0x00007ffff6d50b15 in __libc_start_main () from /lib64/libc.so.6
#11 0x0000000000400721 in _start ()
(gdb) 

Also reported in https://bugs.centos.org/view.php?id=11220

This upstream changeset should fix the issue: https://github.com/facebook/pyre2/commit/97d175fe93ca61711024fbc2c71d03bced12236e