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Problems with gdb after 5.1 upgrade (Tru64)

I am the admin of a server that C programming classes are taught on at a
university. About 2 weeks ago we did the Tru64 5.0 -> 5.0a -> 5.1 upgrade
and we have been having problems with the system ever since. I have
gotten most of the resolved but I cant seem to get gdb to work anymore.
Gdb segfaults any time I run a program through it. This happens with both
gdb 5.0 and 4.18 and using gcc 2.95.2 and 2.8.1. I have contacted Comapq
about it but of cource they dont support GNU software. Any help would be
much appreciated. Here is an example with a simple hello world program.

The hello.c program
#include <stdio.h>

int main(void)
        printf("\nHello world!\n\n");
--------> gcc -g hello.c> ./a.out

Hello world!> gdb a.out
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
welcome to change it and/or distribute copies of it under certain
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
This GDB was configured as "alpha-dec-osf5.1"...
(gdb) break main
Breakpoint 1 at 0x120001178: file hello.c, line 5.
(gdb) run
Starting program: /home3/t/trevore/projects/tmp/a.out
Unaligned access pid=379013 <gdb> va=0x1400a4e9b pc=0x120140000
ra=0x12013ffff inst=0xa4290018
Unaligned access pid=379013 <gdb> va=0x1400a4e93 pc=0x120140004
ra=0x12013ffff inst=0xa4c90010
Unaligned access pid=379013 <gdb> va=0x1400a4e9b pc=0x120140010
ra=0x12013ffff inst=0xb4290018
Unaligned access pid=379013 <gdb> va=0x1400a4eb3 pc=0x120140024
ra=0x12013ffff inst=0xa0690030
Unaligned access pid=379013 <gdb> va=0x1400a4e9b pc=0x120140028
ra=0x12013ffff inst=0xa4290018
Unaligned access pid=379013 <gdb> va=0x1400a4e8b pc=0x12014002c
ra=0x12013ffff inst=0xa4890008
Unaligned access pid=379013 <gdb> va=0x1400a4ea3 pc=0x120140030
ra=0x12013ffff inst=0xa4a90020
Unaligned access pid=379013 <gdb> va=0x1400a4e9b pc=0x120140040
ra=0x12013ffff inst=0xb4690018
Unaligned access pid=379013 <gdb> va=0x1400a4e9b pc=0x120140058
ra=0x12013ffff inst=0x8d490018
Unaligned access pid=379013 <gdb> va=0x1400a4e93 pc=0x12014006c
ra=0x12013ffff inst=0x9d490010
Segmentation fault>


Trevor R. Ellermann
System Administrator
Engineering and Mines
University of Arizona

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