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Hi, This patch avoids the heap corruption that was causing the problem described in <http://www.cygwin.com/ml/cygwin/2003-08/msg00364.html>. In pwdgrp::read_group(), there is loop to free allocated gr_mem buffers. That loop checks to see if gr_mem != &null_ptr, but does not set gr_mem to &null_ptr after free() is called. Subsequent calls then attempt to free the same address again, corrupting the malloc structures. The tar test case triggers this behavior if there is no /etc directory available, for some reason. Dave ====================================================================== ChangeLog: 2003-08-08 David Rothenberger <daveroth@acm.org> * grp.cc (read_group): Set __group32.gr_mem pointer back to &null_ptr after free() is called.
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grp.patch
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