Fix an illegal memory access triggered when trying to examine an input file containin...

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

diff --git a/gdb/thread.c b/gdb/thread.c
index 17bc642b84debe5c8cadedfed428765de70191f0..f171e2e3b634de110768981d0a1fa133998470c3 100644 (file)
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -1,6 +1,6 @@
 /* Multi-process/thread control for GDB, the GNU debugger.
 
-   Copyright (C) 1986-2019 Free Software Foundation, Inc.
+   Copyright (C) 1986-2020 Free Software Foundation, Inc.
 
    Contributed by Lynx Real-Time Systems, Inc.  Los Gatos, CA.
 
@@ -444,7 +444,7 @@ thread_step_over_chain_remove (struct thread_info *tp)
   step_over_chain_remove (&step_over_queue_head, tp);
 }
 
-/* Delete the thread referenced by THR.  If SILENT, don't notifyi
+/* Delete the thread referenced by THR.  If SILENT, don't notify
    the observer of this exit.
    
    THR must not be NULL or a failed assertion will be raised.  */
@@ -709,7 +709,7 @@ delete_exited_threads (void)
       delete_thread (tp);
 }
 
-/* Return true value if stack temporaies are enabled for the thread
+/* Return true value if stack temporaries are enabled for the thread
    TP.  */
 
 bool
@@ -1818,6 +1818,8 @@ thread_apply_command (const char *tidlist, int from_tty)
 static void
 taas_command (const char *cmd, int from_tty)
 {
+  if (cmd == NULL || *cmd == '\0')
+    error (_("Please specify a command to apply on all threads"));
   std::string expanded = std::string ("thread apply all -s ") + cmd;
   execute_command (expanded.c_str (), from_tty);
 }
@@ -1827,6 +1829,8 @@ taas_command (const char *cmd, int from_tty)
 static void
 tfaas_command (const char *cmd, int from_tty)
 {
+  if (cmd == NULL || *cmd == '\0')
+    error (_("Please specify a command to apply on all frames of all threads"));
   std::string expanded
     = std::string ("thread apply all -s -- frame apply all -s ") + cmd;
   execute_command (expanded.c_str (), from_tty);