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  • From: James Cameron <cameron AT stl.dec.com>
  • To: TDS Development Group <freetds AT franklin.oit.unc.edu>
  • Subject: Re: More on Odd Problem.
  • Date: Wed, 27 Dec 2000 09:02:46 +1100


Tim Uckun wrote:
> Ok here is what GDB says I hope this tells you something because it's
> gobeldygook to me.

No worries.

> Attempting to convert unknown source type 104

That's not GDB speaking there, I guess.

> Program received signal SIGSEGV, Segmentation fault.
> 0x4014f4a7 in memcpy (dstpp=0x81b8464, srcpp=0x81a418c, len=4294967295) at
> ../sysdeps/generic/memcpy.c:55
> 55 ../sysdeps/generic/memcpy.c: No such file or directory.
> (gdb)

Interpretation ... the program received a SIGSEGV segmentation fault
signal while it was executing code within the memcpy function. memcpy
copies a block of memory, given a source and destination pointer, and a
length in bytes. gdb shows you these values. The source and
destination look reasonable, but the length is clearly wrong.
Programming error, most likely. Looks like a negative number from a
signed 32 bit integer being interpreted as unsigned integer.

Need more information from you; do it again, but this time at the (gdb)
prompt type bt and hit enter. I think I mentioned this before. This
issues a stack back trace, telling us what software component is
responsible for calling the memcpy function. Mail the result. We can
then voice an opinion on the responsible code.

--
James Cameron (cameron AT stl.dec.com)

OpenVMS, Linux, Firewalls, Software Engineering, CGI, HTTP, X, C, FORTH,
COBOL, BASIC, DCL, csh, bash, ksh, sh, Electronics, Microcontrollers,
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Remote Area Power, Greek Scholar, Tenor Vocalist, Church Sound, Husband.

"Specialisation is for insects." -- Robert Heinlein.




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