[PATCH v2 2/2] Make tui-winsource not use breakpoint_chain

[cbiesinger@chromium.org]

From: Christian Biesinger <cbiesinger@google.com>

That's an internal variable of breakpoint.c. Insted, use
iterate_over_breakpoints to update the breakpoint list.

gdb/ChangeLog:

2019-10-09  Christian Biesinger  <cbiesinger@google.com>

	* breakpoint.c (breakpoint_chain): Make static.
	* tui/tui-winsource.c: Call iterate_over_breakpoints instead
	of accessing breakpoint_chain.
---
 gdb/breakpoint.c        |  2 +-
 gdb/tui/tui-winsource.c | 12 +++++-------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 698411d707f..531ab044557 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -521,7 +521,7 @@ bool target_exact_watchpoints = false;
 
 /* Chains of all breakpoints defined.  */
 
-struct breakpoint *breakpoint_chain;
+static struct breakpoint *breakpoint_chain;
 
 /* Array is sorted by bp_locations_compare - primarily by the ADDRESS.  */
 
diff --git a/gdb/tui/tui-winsource.c b/gdb/tui/tui-winsource.c
index 683856de817..fb64075cbff 100644
--- a/gdb/tui/tui-winsource.c
+++ b/gdb/tui/tui-winsource.c
@@ -401,8 +401,6 @@ tui_source_window_base::update_breakpoint_info
 
   for (i = 0; i < content.size (); i++)
     {
-      struct breakpoint *bp;
-      extern struct breakpoint *breakpoint_chain;
       struct tui_source_element *line;
 
       line = &content[i];
@@ -413,9 +411,7 @@ tui_source_window_base::update_breakpoint_info
          do with it.  Identify enable/disabled breakpoints as well as
          those that we already hit.  */
       tui_bp_flags mode = 0;
-      for (bp = breakpoint_chain;
-           bp != NULL;
-           bp = bp->next)
+      iterate_over_breakpoints ([&] (struct breakpoint *bp, void*) -> int
         {
 	  struct bp_location *loc;
 
@@ -423,7 +419,7 @@ tui_source_window_base::update_breakpoint_info
 		      || line->line_or_addr.loa == LOA_ADDRESS);
 
 	  if (bp == being_deleted)
-	    continue;
+	    return false;
 
 	  for (loc = bp->loc; loc != NULL; loc = loc->next)
 	    {
@@ -441,12 +437,14 @@ tui_source_window_base::update_breakpoint_info
 		    mode |= TUI_BP_HARDWARE;
 		}
 	    }
-        }
+	  return false;
+        }, nullptr);
       if (line->break_mode != mode)
         {
           line->break_mode = mode;
           need_refresh = true;
         }
+      return false;
     }
   return need_refresh;
 }
-- 
2.23.0.581.g78d2f28ef7-goog