Use scoped_restore in a couple of interp-related places

While looking through the "interp" code I found a couple of spots that
could use scoped_restore.

ChangeLog
2018-05-25  Tom Tromey  <tom@tromey.com>

	* cli/cli-interp.c (safe_execute_command): Use scoped_restore.
	* interps.c (interp_exec): Use scoped_restore.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index b697326..3e199b6 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2018-05-25  Tom Tromey  <tom@tromey.com>
 
+       * cli/cli-interp.c (safe_execute_command): Use scoped_restore.
+       * interps.c (interp_exec): Use scoped_restore.
+
+2018-05-25  Tom Tromey  <tom@tromey.com>
+
        * remote.c (remote_target::remote_file_get): Use
        gdb::byte_vector.
        (remote_target::remote_file_put): Likewise.

diff --git a/gdb/cli/cli-interp.c b/gdb/cli/cli-interp.c
index bbee809..0663301 100644 (file)
--- a/gdb/cli/cli-interp.c
+++ b/gdb/cli/cli-interp.c
@@ -356,11 +356,10 @@ safe_execute_command (struct ui_out *command_uiout, const char *command,
                      int from_tty)
 {
   struct gdb_exception e = exception_none;
-  struct ui_out *saved_uiout;
 
   /* Save and override the global ``struct ui_out'' builder.  */
-  saved_uiout = current_uiout;
-  current_uiout = command_uiout;
+  scoped_restore saved_uiout = make_scoped_restore (&current_uiout,
+                                                   command_uiout);
 
   TRY
     {
@@ -372,9 +371,6 @@ safe_execute_command (struct ui_out *command_uiout, const char *command,
     }
   END_CATCH
 
-  /* Restore the global builder.  */
-  current_uiout = saved_uiout;
-
   /* FIXME: cagney/2005-01-13: This shouldn't be needed.  Instead the
      caller should print the exception.  */
   exception_print (gdb_stderr, e);

diff --git a/gdb/interps.c b/gdb/interps.c
index 61db7f4..162cd83 100644 (file)
--- a/gdb/interps.c
+++ b/gdb/interps.c
@@ -354,18 +354,11 @@ interp_exec (struct interp *interp, const char *command_str)
 {
   struct ui_interp_info *ui_interp = get_current_interp_info ();
 
-  struct gdb_exception ex;
-  struct interp *save_command_interp;
-
   /* See `command_interp' for why we do this.  */
-  save_command_interp = ui_interp->command_interpreter;
-  ui_interp->command_interpreter = interp;
-
-  ex = interp->exec (command_str);
-
-  ui_interp->command_interpreter = save_command_interp;
+  scoped_restore save_command_interp
+    = make_scoped_restore (&ui_interp->command_interpreter, interp);
 
-  return ex;
+  return interp->exec (command_str);
 }
 
 /* A convenience routine that nulls out all the common command hooks.