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Article #3370

Re: program crashes

#3370
From: Fletcher Glenn
Date: Wed, 14 Nov 2001 16:35
46 lines
3494 bytes
cal wrote:
> 
> Hi there,
>     My program crashes with a core. and I check it with debugger. I got the
> following.
> 
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "sparc-sun-solaris2.7"...
> Core was generated by `cybAgent'.
> Program terminated with signal 9, Killed.
> Reading symbols from /usr/lib/libsocket.so.1...done.
> Reading symbols from /usr/lib/libnsl.so.1...done.
> Reading symbols from /usr/lib/libpthread.so.1...done.
> Reading symbols from
> /export/home/ccheung/agent/v3/dev/bin/./libstdc++.so.3... done.
> Reading symbols from /usr/lib/libm.so.1...done.
> Reading symbols from
> /export/home/ccheung/agent/v3/dev/bin/./libgcc_s.so.1... done.
> Reading symbols from /usr/lib/libc.so.1...done.
> Reading symbols from /usr/lib/libdl.so.1...done.
> Reading symbols from /usr/lib/libmp.so.2...done.
> Reading symbols from /usr/platform/SUNW,Ultra-4/lib/libc_psr.so.1...done.
> Reading symbols from /usr/lib/libthread.so.1...done.
> Reading symbols from /usr/lib/nss_files.so.1...done.
> #0 0xff1456c8 in _smalloc () from /usr/lib/libc.so.1
> (gdb) bt
> #0 0xff1456c8 in _smalloc () from /usr/lib/libc.so.1
> Segmentation Fault(coredump)
> 
> Anyone know what is smalloc? I'm using g++ 301 compiler. thx

smalloc is probably a sub-function of malloc().  You have
probably corrupted your heap.  This sort of problem is
notoriously difficult to troubleshoot as the crash is
usually nowhere near the event that causes the 
corruption.  You need to use a heap checker like 
Rational's Purify, or Electric Fence.

-- 
		Fletcher Glenn
		email f-g-l-e-n-n@quest.com (remove the dashes)
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Message-ID: <3BF29E69.E20C3958@quest.com>
From: Fletcher Glenn <f-g-l-e-n-n@quest.com>
Organization: Quest Software
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Subject: Re: program crashes
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Date: Wed, 14 Nov 2001 16:35:02 GMT