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-rw-r--r--gdb/ChangeLog10
-rw-r--r--gdb/linux-thread-db.c16
2 files changed, 20 insertions, 6 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3e72420..2e30d4a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,6 +1,16 @@
2016-03-15 Pedro Alves <palves@redhat.com>
PR gdb/19676
+ * linux-thread-db.c (try_thread_db_load_1): Leave
+ info->td_ta_thr_iter_p NULL iff debugging a live process and we
+ have /proc access.
+ (find_new_threads_once): Assert that we have a non-NULL
+ info->td_ta_thr_iter_p instead of checking whether the target has
+ execution.
+
+2016-03-15 Pedro Alves <palves@redhat.com>
+
+ PR gdb/19676
* infrun.c (displaced_step_prepare): Also disable displaced
stepping on NOT_SUPPORTED_ERROR.
* linux-tdep.c (linux_displaced_step_location): If reading auxv
diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index 1eb457d..ce60beb 100644
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -564,7 +564,6 @@ try_thread_db_load_1 (struct thread_db_info *info)
/* These are essential. */
CHK (TDB_VERBOSE_DLSYM (info, td_ta_map_lwp2thr));
- CHK (TDB_VERBOSE_DLSYM (info, td_ta_thr_iter));
CHK (TDB_VERBOSE_DLSYM (info, td_thr_validate));
CHK (TDB_VERBOSE_DLSYM (info, td_thr_get_info));
@@ -572,10 +571,6 @@ try_thread_db_load_1 (struct thread_db_info *info)
TDB_DLSYM (info, td_thr_tls_get_addr);
TDB_DLSYM (info, td_thr_tlsbase);
-#undef TDB_VERBOSE_DLSYM
-#undef TDB_DLSYM
-#undef CHK
-
/* It's best to avoid td_ta_thr_iter if possible. That walks data
structures in the inferior's address space that may be corrupted,
or, if the target is running, may change while we walk them. If
@@ -587,6 +582,15 @@ try_thread_db_load_1 (struct thread_db_info *info)
currently on core targets, as it uses ptrace directly. */
if (target_has_execution
&& linux_proc_task_list_dir_exists (ptid_get_pid (inferior_ptid)))
+ info->td_ta_thr_iter_p = NULL;
+ else
+ CHK (TDB_VERBOSE_DLSYM (info, td_ta_thr_iter));
+
+#undef TDB_VERBOSE_DLSYM
+#undef TDB_DLSYM
+#undef CHK
+
+ if (info->td_ta_thr_iter_p == NULL)
{
struct lwp_info *lp;
int pid = ptid_get_pid (inferior_ptid);
@@ -1246,7 +1250,7 @@ find_new_threads_once (struct thread_db_info *info, int iteration,
data.new_threads = 0;
/* See comment in thread_db_update_thread_list. */
- gdb_assert (!target_has_execution);
+ gdb_assert (info->td_ta_thr_iter_p != NULL);
TRY
{