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IDL (and others) fails on 6.5.10f
- Subject: IDL (and others) fails on 6.5.10f
- From: roberson(at)ibd.nrc.ca (Walter Roberson)
- Date: 2 Jan 2001 23:58:00 GMT
- Newsgroups: comp.sys.sgi.apps,comp.sys.sgi.bugs,comp.lang.idl-pvwave
- Organization: National Research Council Canada
- Xref: news.doit.wisc.edu comp.sys.sgi.apps:27092 comp.sys.sgi.bugs:15641 comp.lang.idl-pvwave:22793
We have found an IRIX 6.5.10(f) error that renders some applications
[e.g., RSI's IDL] nearly useless.
*Do not upgrade to 6.5.10f if you need IDL*
More specifically, the IRIX bug has to do with using
brk() or sbrk() to return memory to IRIX. Most programs simply allow
their datasegment to grow without ever shrinking, but a few programs
such as IDL actively manage their memory. These programs may fail
if more than 0x0001f000 bytes (126976) are being returned.
I have a simple test case for this, and I have an open case with
SGI, and will open an RSI case in a moment.
Email me if you want the test case; email@example.com and ask for 'brk2.c'.