(TAGS): Put DEPFILES back and add as a dependency.

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

diff --git a/gdb/dummy-frame.c b/gdb/dummy-frame.c
index 10596b9bc624647b61d046d219fd02a0fb210c74..57dbb76b3af808441d7fa62b0968f4bb0a6f0491 100644 (file)
--- a/gdb/dummy-frame.c
+++ b/gdb/dummy-frame.c
@@ -137,25 +137,31 @@ dummy_frame_sniffer (const struct frame_unwind *self,
      entry point, or some random address on the stack.  Trying to use
      that PC to apply standard frame ID unwind techniques is just
      asking for trouble.  */
-  /* Use an architecture specific method to extract the prev's dummy
-     ID from the next frame.  Note that this method uses
-     frame_register_unwind to obtain the register values needed to
-     determine the dummy frame's ID.  */
-  this_id = gdbarch_unwind_dummy_id (get_frame_arch (next_frame), next_frame);
-
-  /* Use that ID to find the corresponding cache entry.  */
-  for (dummyframe = dummy_frame_stack;
-       dummyframe != NULL;
-       dummyframe = dummyframe->next)
+  
+  /* Don't bother unles there is at least one dummy frame.  */
+  if (dummy_frame_stack != NULL)
     {
-      if (frame_id_eq (dummyframe->id, this_id))
+      /* Use an architecture specific method to extract the prev's
+        dummy ID from the next frame.  Note that this method uses
+        frame_register_unwind to obtain the register values needed to
+        determine the dummy frame's ID.  */
+      this_id = gdbarch_unwind_dummy_id (get_frame_arch (next_frame), 
+                                        next_frame);
+
+      /* Use that ID to find the corresponding cache entry.  */
+      for (dummyframe = dummy_frame_stack;
+          dummyframe != NULL;
+          dummyframe = dummyframe->next)
        {
-         struct dummy_frame_cache *cache;
-         cache = FRAME_OBSTACK_ZALLOC (struct dummy_frame_cache);
-         cache->prev_regcache = dummyframe->regcache;
-         cache->this_id = this_id;
-         (*this_prologue_cache) = cache;
-         return 1;
+         if (frame_id_eq (dummyframe->id, this_id))
+           {
+             struct dummy_frame_cache *cache;
+             cache = FRAME_OBSTACK_ZALLOC (struct dummy_frame_cache);
+             cache->prev_regcache = dummyframe->regcache;
+             cache->this_id = this_id;
+             (*this_prologue_cache) = cache;
+             return 1;
+           }
        }
     }
   return 0;
@@ -169,7 +175,7 @@ dummy_frame_prev_register (struct frame_info *next_frame,
                           void **this_prologue_cache,
                           int regnum, int *optimized,
                           enum lval_type *lvalp, CORE_ADDR *addrp,
-                          int *realnum, void *bufferp)
+                          int *realnum, gdb_byte *bufferp)
 {
   /* The dummy-frame sniffer always fills in the cache.  */
   struct dummy_frame_cache *cache = (*this_prologue_cache);
@@ -258,7 +264,7 @@ void
 _initialize_dummy_frame (void)
 {
   add_cmd ("dummy-frames", class_maintenance, maintenance_print_dummy_frames,
-          "Print the contents of the internal dummy-frame stack.",
+          _("Print the contents of the internal dummy-frame stack."),
           &maintenanceprintlist);
 
 }