[Converted from Gnats 2113]

core dump:

in some .c files, lh->include_dirs is used without testing lh->include_dirs==NULL

gdb output:

Loaded symbols for /usr/lib/64/libthread_db.so.1
#0  0x0000000100158f40 in dwarf_decode_lines (lh=0x1008ee350, comp_dir=0x0, 
    abfd=0x1004d59c0, cu=0xffffffff7fffbf70, pst=0x1011c2060)
    at dwarf2read.c:6560
6560                      dir = lh->include_dirs[fe->dir_index - 1];
Setting up the environment for debugging gdb.
Breakpoint 1 at 0x10004fc94: file utils.c, line 850.
Breakpoint 2 at 0x10008fc5c: file cli/cli-cmds.c, line 193.

Release:
gdb 6.3

Environment:
Solaris 5.9 64bit
gcc version 3.3.1 to build the binary to debug generating the gdb core

How-To-Repeat:
perhaps try to debug a gcc 3.3.1 binary

NB: this bug was also present in gdb 6.2.