# Known bug in GDB < 7.8:

# https://sourceware.org/bugzilla/show_bug.cgi?id=16215

# Backported to GDB 7.6 until we upgrade to GDB 7.9.

# Without this patch, we get spurious errors debugging on SPARC,

# especially with GCC >= 4.9.0.

--- gdb-7.6/gdb/dwarf2-frame.c	2013-01-31 10:31:48.000000000 -0800

+++ gdb-7.6/gdb/dwarf2-frame.c	2015-09-09 16:07:52.767075883 -0700

@@ -1497,16 +1497,12 @@

 {

   while (get_frame_type (this_frame) == INLINE_FRAME)

     this_frame = get_prev_frame (this_frame);

-  /* This restriction could be lifted if other unwinders are known to

-     compute the frame base in a way compatible with the DWARF

-     unwinder.  */

-  if (!frame_unwinder_is (this_frame, &dwarf2_frame_unwind)

-      && !frame_unwinder_is (this_frame, &dwarf2_tailcall_frame_unwind))

-    error (_("can't compute CFA for this frame"));

+

   if (get_frame_unwind_stop_reason (this_frame) == UNWIND_UNAVAILABLE)

     throw_error (NOT_AVAILABLE_ERROR,

 		 _("can't compute CFA for this frame: "

 		   "required registers or memory are unavailable"));

+

   return get_frame_base (this_frame);

 }