URL:
  <http://savannah.gnu.org/bugs/?47826>

                 Summary: screen process crashes when parsing 'logfile'
parameter
                 Project: GNU Screen
            Submitted by: yoshikaw
            Submitted on: 2016年05月02日 14時36分29秒
                Category: Crash/Freeze/Infloop
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.3.1
           Fixed Release: None
         Planned Release: None
           Work Required: None

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Details:

after 23c7d0e in screen-v4 branch, a screen process crashes when parsing
'logfile' parameter.

reproduce procedure:

 * compile screen (latest git screen-v4 branch)
 * create simple .screenrc (e.g. echo 'logfile screen.log' > .screenrc)
 * start a screen using simple .screenrc (e.g. /path/to/screen-4.3.1 -c
.screenrc)


(gdb) bt
#0  0x00007fa480311067 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007fa480312448 in __GI_abort () at abort.c:89
#2  0x000000000040669a in CoreDump (sigsig=<optimized out>) at screen.c:1717
#3  <signal handler called>
#4  0x000000000042e163 in DoAction (act=act@entry=0x7fffe9f71a50,
key=key@entry=-1) at process.c:2628
#5  0x0000000000438963 in DoCommand (argv=argv@entry=0x7fffe9f71b90,
argl=argl@entry=0x7fffe9f71a90) at process.c:4668
#6  0x0000000000411171 in RcLine (ubuf=ubuf@entry=0x7fffe9f71da0 "logfile",
ubufl=ubufl@entry=2048) at fileio.c:385
#7  0x0000000000411f4d in FinishRc (rcfilename=0x7fffe9f74936 "./.screenrc")
at fileio.c:330
#8  0x0000000000405019 in main (ac=0, av=<optimized out>) at screen.c:1440





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