Crash in tar after update to 2.0.2-1

Crash in tar after update to 2.0.2-1

[Dominik Straßer]

Hi,
after an update to Cygwin 2.0.2-1 my tar crashes unpacking a file (which
has been created on Unix).

The backtrace is:
#0  0x00000000773f86a4 in ntdll!RtlCopySid ()
   from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
#1  0x00000001800c1a57 in pwdgrp::parse_group() () from /usr/bin/cygwin1.dll
#2  0x0000000180153f27 in pwdgrp::add_line(char*) () from
/usr/bin/cygwin1.dll
#3  0x000000018015576b in pwdgrp::add_account_post_fetch(char*, bool) ()
   from /usr/bin/cygwin1.dll
#4  0x0000000180155c79 in pwdgrp::add_account_from_file(char const*) ()
   from /usr/bin/cygwin1.dll
#5  0x00000001800c253a in internal_getgrnam(char const*, cyg_ldap*) ()
   from /usr/bin/cygwin1.dll
#6  0x00000001800c2acc in getgrnam32 () from /usr/bin/cygwin1.dll
#7  0x00000001801238fb in _sigfe () from /usr/bin/cygwin1.dll
#8  0x0000000000000006 in ?? ()

After analyzing the crash I checked our groups file.
It contained the following enty:
xxx::3333
After removing the entry, the crash was gone.

This worked in cygwin 1.7.x.

Best regards

Dominik

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