[RFA] Make insert_breakpoints return void.

[Vladimir Prus <vladimir@codesourcery.com>]

The insert_breakpoints function has 'int' as return
type, and even tries to return something, but will
never manage to -- because on the way to returning
non-zero value it will always through an exception.
This patch adjust the prototype to match the actual
behaviour. OK?

- Volodya

	* breakpoint.h (insert_breakpoints): Change
	return type to void.
	* breakpoint.c (insert_breakpoints): Change
	return type to void.  Rename local return_val
	variable to error.
	* infrun.c (keep_going): Instead of checking
	return value from insert_breakpoints, catch exception.
---
 gdb/breakpoint.c |    9 ++++-----
 gdb/breakpoint.h |    2 +-
 gdb/infrun.c     |    7 ++++++-
 3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 49958e6..0f96997 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -1220,11 +1220,11 @@ in which its expression is valid.\n"),
    Both return zero if successful,
    or an `errno' value if could not write the inferior.  */
 
-int
+void
 insert_breakpoints (void)
 {
   struct bp_location *b, *temp;
-  int return_val = 0;	/* return success code. */
+  int error = 0;
   int val = 0;
   int disabled_breaks = 0;
   int hw_breakpoint_error = 0;
@@ -1265,10 +1265,10 @@ insert_breakpoints (void)
 				    &disabled_breaks, &process_warning,
 				    &hw_breakpoint_error);
       if (val)
-	return_val = val;
+	error = val;
     }
 
-  if (return_val)
+  if (error)
     {
       /* If a hardware breakpoint or watchpoint was inserted, add a
          message about possibly exhausted resources.  */
@@ -1286,7 +1286,6 @@ You may have requested too many hardware breakpoints/watchpoints.\n");
       target_terminal_ours_for_output ();
       error_stream (tmp_error_stream);
     }
-  return return_val;
 }
 
 int
diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h
index 4b84502..56b9a6e 100644
--- a/gdb/breakpoint.h
+++ b/gdb/breakpoint.h
@@ -717,7 +717,7 @@ extern void awatch_command_wrapper (char *, int);
 extern void rwatch_command_wrapper (char *, int);
 extern void tbreak_command (char *, int);
 
-extern int insert_breakpoints (void);
+extern void insert_breakpoints (void);
 
 extern int remove_breakpoints (void);
 
diff --git a/gdb/infrun.c b/gdb/infrun.c
index ad1de6b..62d6d1e 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -2948,9 +2948,14 @@ keep_going (struct execution_control_state *ecs)
       
       if (!ecs->another_trap)
 	{
+	  struct gdb_exception e;
 	  /* Stop stepping when inserting breakpoints
 	     has failed.  */
-	  if (insert_breakpoints () != 0)
+	  TRY_CATCH (e, RETURN_MASK_ERROR)
+	    {
+	      insert_breakpoints ();
+	    }
+	  if (e.reason < 0)
 	    {
 	      stop_stepping (ecs);
 	      return;
-- 
1.5.3.5