crash printing non-local variable from nested subprogram

[deliverable/binutils-gdb.git] / gdb / linux-thread-db.c

diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index 855629bcf466e92ec4c02ea7d85c12a9f52773e5..b5719eb9e8c6e8d036c3af50a4cbd60f0ee917c8 100644 (file)
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -198,10 +198,9 @@ static void thread_db_find_new_threads_2 (ptid_t ptid, int until_no_new);
 
 static void check_thread_signals (void);
 
-static void record_thread (struct thread_db_info *info,
-                          struct thread_info *tp,
-                          ptid_t ptid, const td_thrhandle_t *th_p,
-                          const td_thrinfo_t *ti_p);
+static struct thread_info *record_thread
+  (struct thread_db_info *info, struct thread_info *tp,
+   ptid_t ptid, const td_thrhandle_t *th_p, const td_thrinfo_t *ti_p);
 
 /* Add the current inferior to the list of processes using libpthread.
    Return a pointer to the newly allocated object that was added to
@@ -386,7 +385,7 @@ have_threads (ptid_t ptid)
 \f
 /* Fetch the user-level thread id of PTID.  */
 
-static void
+static struct thread_info *
 thread_from_lwp (ptid_t ptid)
 {
   td_thrhandle_t th;
@@ -419,7 +418,7 @@ thread_from_lwp (ptid_t ptid)
 
   /* Fill the cache.  */
   tp = find_thread_ptid (ptid);
-  record_thread (info, tp, ptid, &th, &ti);
+  return record_thread (info, tp, ptid, &th, &ti);
 }
 \f
 
@@ -1287,10 +1286,10 @@ attach_thread (ptid_t ptid, const td_thrhandle_t *th_p,
 }
 
 /* Record a new thread in GDB's thread list.  Creates the thread's
-   private info.  If TP is NULL, creates a new thread.  Otherwise,
-   uses TP.  */
+   private info.  If TP is NULL or TP is marked as having exited,
+   creates a new thread.  Otherwise, uses TP.  */
 
-static void
+static struct thread_info *
 record_thread (struct thread_db_info *info,
               struct thread_info *tp,
               ptid_t ptid, const td_thrhandle_t *th_p,
@@ -1304,7 +1303,7 @@ record_thread (struct thread_db_info *info,
      initialized yet.  Leave private == NULL until the thread library
      has initialized.  */
   if (ti_p->ti_tid == 0)
-    return;
+    return tp;
 
   /* Construct the thread's private data.  */
   priv = XCNEW (struct private_thread_info);
@@ -1333,6 +1332,8 @@ record_thread (struct thread_db_info *info,
 
   if (target_has_execution)
     check_thread_signals ();
+
+  return tp;
 }
 
 static void
@@ -1854,10 +1855,7 @@ thread_db_get_thread_local_address (struct target_ops *ops,
 
   /* We may not have discovered the thread yet.  */
   if (thread_info != NULL && thread_info->priv == NULL)
-    {
-      thread_from_lwp (ptid);
-      thread_info = find_thread_ptid (ptid);
-    }
+    thread_info = thread_from_lwp (ptid);
 
   if (thread_info != NULL && thread_info->priv != NULL)
     {