diff --git a/libgcc/unwind-dw2-fde.c b/libgcc/unwind-dw2-fde.c
index 919abfe0664..d237179f4ea 100644
--- a/libgcc/unwind-dw2-fde.c
+++ b/libgcc/unwind-dw2-fde.c
@@ -48,6 +48,7 @@ typedef __UINTPTR_TYPE__ uintptr_type;
  #include "unwind-dw2-btree.h"

  static struct btree registered_frames;
+static bool in_shutdown;

  static void
  release_registered_frames (void) __attribute__ ((destructor (110)));
@@ -57,6 +58,7 @@ release_registered_frames (void)
    /* Release the b-tree and all frames. Frame releases that happen 
later are
     * silently ignored */
    btree_destroy (&registered_frames);
+  in_shutdown = true;
  }