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From: "dlstevens at us dot ibm dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sources.redhat.com
Subject: [Bug libc/214] sbrk() doesn't detect brk() failures. Malloc doesn't handle sbrk() failures
Date: Tue, 14 Mar 2006 19:59:00 -0000	[thread overview]
Message-ID: <20060314195927.23299.qmail@sourceware.org> (raw)
In-Reply-To: <20040610193839.214.dlstevens@us.ibm.com>


------- Additional Comments From dlstevens at us dot ibm dot com  2006-03-14 19:59 -------
"The user" would be me, and I didn't get incorrect results from a man page.
The problem, as I said in the first two entries, was that I was never able
to get a NULL return from malloc(). I always either got "success" (in some
cases without actually getting memory) or a segmentation violation. If I
recall, a malloc() that exceeded the soft limit returned the same pointer as
an already-allocated and not freed prior malloc(), which would be wrong.

It certainly is possible that I had a misconfiguration on my system, and I lost
the context beyond what I wrote here more than a year ago. So, closing the bug
is not unreasonable, but I'd be happier if you had a test that manipulates
the soft limits (correctly, if what I did was wrong) and results in a
successful allocation or NULL return from malloc(), always. No segmentation
faults, no garbage returns, etc.

In other words, if you can demonstrate a case where setting a soft limit
results in malloc() returning NULL (ever), then I think your test will be
farther than I ever got, and I'd be happy with having the bug closed. :-)

I don't care what the man page says. :-)

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=214

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  parent reply	other threads:[~2006-03-14 19:59 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-10 19:38 [Bug libc/214] New: " dlstevens at us dot ibm dot com
2004-06-18 17:35 ` [Bug libc/214] " dlstevens at us dot ibm dot com
2004-09-26 21:29 ` drepper at redhat dot com
2006-03-03 22:01 ` rsa at us dot ibm dot com
2006-03-06 21:37 ` rsa at us dot ibm dot com
2006-03-08 19:21 ` rsa at us dot ibm dot com
2006-03-10 20:33 ` rsa at us dot ibm dot com
2006-03-10 22:18 ` rsa at us dot ibm dot com
2006-03-13 16:24 ` rsa at us dot ibm dot com
2006-03-14 18:34 ` rsa at us dot ibm dot com
2006-03-14 19:59 ` dlstevens at us dot ibm dot com [this message]
2006-03-15 20:18 ` rsa at us dot ibm dot com
2006-03-15 21:21 ` dlstevens at us dot ibm dot com
2006-03-16  0:29 ` rsa at us dot ibm dot com
2006-03-20 19:59 ` rsa at us dot ibm dot com
2006-03-20 20:27 ` dlstevens at us dot ibm dot com
2006-03-21 23:56 ` dlstevens at us dot ibm dot com
2006-04-01 20:21 ` drepper at redhat dot com

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