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- From: olson@anchor.esd.sgi.com (Dave Olson)
- Newsgroups: comp.sys.sgi.bugs
- Subject: Re: libimage iopen() bug
- Message-ID: <ui373rk@zuni.esd.sgi.com>
- Date: 6 Jan 93 21:46:46 GMT
- References: <1993Jan6.200247.24300@netcom.com>
- Sender: news@zuni.esd.sgi.com (Net News)
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 41
-
- In <1993Jan6.200247.24300@netcom.com> benoist@netcom.com (Tom Benoist) writes:
-
- | Some wont consider this a bug.
- | I also understand that 4Dgifts is officially unsupported demoware.
-
- Not really. That is the same source used to build libimage.a
-
- | Anyway, the problem:
- |
- | /usr/people/4Dgifts/iristools/libimage/open.c
- |
- | If iopen() fails because its not sent a readable file
- | in the proper format, it returns without:
- | 1. Freeing up Memory it allocates using calloc
- | 2. closing the file descriptor
-
- That's because the original behavior was to exit on that
- error. When I added the ability to trap the error and
- call a user function and continue, I missed the free
- (although I did catch and fix others...)
-
- If the file isn't readable, the open fails, and there
- *is* no file descriptor to close!
-
- | The result is that using this code in an app that queries the
- | user for filenames, you run the good chance of eventually
- | running over the Max Limit of 100 for open files. As we all
- | know, after that point File IO basically stops working and
- | your app becomes "quite impotent"
-
- Nope, something else is going on here. If you
- meant a file that can be opened, but then the read of the
- image header fails (or a write fails because the system
- runs out of free space), you are right.
-
- I'll file a bug on this, so it will be fixed for a future
- release.
- --
- Let no one tell me that silence gives consent, | Dave Olson
- because whoever is silent dissents. | Silicon Graphics, Inc.
- Maria Isabel Barreno | olson@sgi.com
-