[Bug 195918] New: /bin/sh crashes from particular script

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Dec 12 11:08:22 UTC 2014


            Bug ID: 195918
           Summary: /bin/sh crashes from particular script
           Product: Base System
           Version: 10.1-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: yuri at rawbw.com

I accidentally hit this crash trying some (probably bash) example taken from

Crash is 100% reproducible.

Script might be invalid for sh, but it shouldn't cause a crash.

--- testcase ---
$ sh
$ echo b=${1985234857347568347:12:5}
Segmentation fault

(gdb) bt
#0  0x0000000000409675 in argstr ()
#1  0x0000000000408af6 in expandarg ()
#2  0x0000000000405f41 in evalcommand ()
#3  0x000000000040534f in evaltree ()
#4  0x0000000000410529 in cmdloop ()
#5  0x0000000000410392 in main ()

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