diff options
Diffstat (limited to 'gdb/somsolib.c')
| -rw-r--r-- | gdb/somsolib.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gdb/somsolib.c b/gdb/somsolib.c index 16d9fa0..2744e5c 100644 --- a/gdb/somsolib.c +++ b/gdb/somsolib.c @@ -405,6 +405,12 @@ som_solib_add (arg_string, from_tty, target) if (status != 0) { int old, new; + int update_coreops; + + /* We must update the to_sections field in the core_ops structure + here, otherwise we dereference a potential dangling pointer + for each call to target_read/write_memory within this routine. */ + update_coreops = core_ops.to_sections == target->to_sections; new = new_so->sections_end - new_so->sections; /* Add sections from the shared library to the core target. */ @@ -422,6 +428,16 @@ som_solib_add (arg_string, from_tty, target) xmalloc ((sizeof (struct section_table)) * new); } target->to_sections_end = (target->to_sections + old + new); + + /* Update the to_sections field in the core_ops structure + if needed. */ + if (update_coreops) + { + core_ops.to_sections = target->to_sections; + core_ops.to_sections_end = target->to_sections_end; + } + + /* Copy over the old data before it gets clobbered. */ memcpy ((char *)(target->to_sections + old), new_so->sections, ((sizeof (struct section_table)) * new)); |