diff options
| author | pk <pk@NetBSD.org> | 1995-01-12 10:17:52 +0000 |
|---|---|---|
| committer | pk <pk@NetBSD.org> | 1995-01-12 10:17:52 +0000 |
| commit | a78b684574fcdf3ff2249abc07ba28329f36a7cf (patch) | |
| tree | 0e3dc472507c5b63e0eac35825dd1857afd9255b /gnu/usr.bin/gdb | |
| parent | 0bf4b5b4245b6472eeeef60faa5d6e984ef0291c (diff) | |
Test pointer before using it.
Diffstat (limited to 'gnu/usr.bin/gdb')
| -rw-r--r-- | gnu/usr.bin/gdb/gdb/kcorelow.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gnu/usr.bin/gdb/gdb/kcorelow.c b/gnu/usr.bin/gdb/gdb/kcorelow.c index 3534c4b6e8b..00c1a547896 100644 --- a/gnu/usr.bin/gdb/gdb/kcorelow.c +++ b/gnu/usr.bin/gdb/gdb/kcorelow.c @@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: kcorelow.c,v 1.2 1994/05/18 12:42:15 pk Exp $ + $Id: kcorelow.c,v 1.3 1995/01/12 10:17:52 pk Exp $ */ #ifdef KERNEL_DEBUG @@ -68,7 +68,7 @@ static CORE_ADDR kernel_start; (target_read_memory((CORE_ADDR)(addr), (char *)(p), sizeof(*(p)))) -static CORE_ADDR +CORE_ADDR ksym_lookup(name) const char *name; { @@ -151,6 +151,11 @@ kcore_open (filename, from_tty) int ontop; CORE_ADDR addr; + if (exec_bfd == NULL) + error("No kernel image specified"); + + kernel_start = bfd_get_start_address (exec_bfd); /* XXX */ + target_preopen (from_tty); if (!filename) { error (core_kd? @@ -179,8 +184,6 @@ kcore_open (filename, from_tty) unpush_target (&kcore_ops); ontop = !push_target (&kcore_ops); - kernel_start = bfd_get_start_address (exec_bfd); /* XXX */ - /* print out the panic string if there is one */ if (kvread(ksym_lookup("panicstr"), &addr) == 0 && addr != 0 && |
