From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
From: Saroj Mahapatra <saroj@optonline.net>
Message-ID: <6d3220b4.0207121744.4fc802e6@posting.google.com>
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Subject: [9fans] bug in fmtfmt
Date: Mon, 15 Jul 2002 09:31:24 +0000
Topicbox-Message-UUID: cc0b53b6-eaca-11e9-9e20-41e7f4b1d025

There is a bug in fmtfmt.

for (p=knownfmt; p->c; p++)
   if (p->c == c) {
      fmtinstanll(p->c, p->fmt);
      while (p->fmt == nil)  <--------- BUG
          ;
      
The pointer 'p' is walking through 'knownfmt'; so p->fmt can not be
nil there, becuase 'fmtinstall' only changes 'fmtalloc' array. There
is also locking issue between 'fmtinstall' and 'fmtfmt' accessing
'fmtalloc' array simultaneously.

Please take a look at this. I wish I had more time to explain this
thoroughly at this moment.

Thanks,
Saroj Mahapatra