gdb: fix vfork with multiple threads

[deliverable/binutils-gdb.git] / gdb / dummy-frame.h

diff --git a/gdb/dummy-frame.h b/gdb/dummy-frame.h
index 9eaec3492bf293b4a7b2b5b1b17cf46f675725cf..6597e1bfece78b54f9532919636b3bff12bc03b1 100644 (file)
--- a/gdb/dummy-frame.h
+++ b/gdb/dummy-frame.h
@@ -1,6 +1,6 @@
 /* Code dealing with dummy stack frames, for GDB, the GNU debugger.
 
-   Copyright (C) 2002-2018 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -24,6 +24,7 @@
 
 struct infcall_suspend_state;
 struct frame_unwind;
+class thread_info;
 
 /* Push the information needed to identify, and unwind from, a dummy
    frame onto the dummy frame stack.  */