Very Computer

Hello.

I just recently installed Red Hat Linux 4.2 on my computer,  and it's my
first experience with Linux.  I got Linux so that I could easily port
programs back and forth from my SGI at work.

I wrote a fairly simple program at home that reads and writes RGB
files.  I used g++ ( gcc version 2.7.2.1 ) to compile it.  I got a
segmentation fault the first time I ran it.  I am accustomed to hunting
down segmentation faults using 'dbx,'  but I suppose gdb is similar.  So
I used gdb and got the following output:

--------begin-------
brett: /home/brett/mbuffer>gdb test
GDB is free software and you are welcome to 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.
GDB 4.16 (i586-unknown-linux),
Copyright 1996 Free Software Foundation, Inc...
(gdb) run leafy4.rgb
Starting program: /home/brett/mbuffer/test leafy4.rgb
Usage: test <filename>
warning: Unable to find dynamic linker breakpoint function.
warning: GDB will be unable to debug shared library initializers
warning: and track explicitly loaded dynamic code.

Program received signal SIGSEGV, Segmentation fault.
0x40002902 in _dl_find_hash ()
(gdb) where
#0  0x40002902 in _dl_find_hash ()
#1  0x40002067 in _dl_linux_resolver ()
#2  0x40003b1e in _dl_linux_resolve ()
(gdb)
--------end--------

I compiled the program with the -gstabs+ option.

Anybody know what could be going wrong here?  Please reply by e-mail if
convenient.

Thanks,
Brett Keating

Excerpts from netnews.comp.os.linux.development.apps: 25-Sep-97 gcc

Quote:> warning: Unable to find dynamic linker breakpoint function.
> warning: GDB will be unable to debug shared library initializers
> warning: and track explicitly loaded dynamic code.

> Program received signal SIGSEGV, Segmentation fault.
> 0x40002902 in _dl_find_hash ()
> (gdb) where
> #0  0x40002902 in _dl_find_hash ()
> #1  0x40002067 in _dl_linux_resolver ()
> #2  0x40003b1e in _dl_linux_resolve ()
> (gdb)

> Anybody know what could be going wrong here?

As to where this is...  From the "ELF How-To" (available from
Sunsite), you need ld.so-1.9.5.tar.gz from
ftp://tsx-11.mit.edu/pub/linux/packages/GCC/

You can probably find ld.so-1.8.x.tar.gz in some other places
if you don't want to migrate up that far.

                                                    -- Kevin