Improve error handling for `frame select` command when there are too many arguments.

Bug:  https://llvm.org/bugs/show_bug.cgi?id=25847

It now gives a more specific error message and then returns instead of trying to select the wrong frame.

llvm-svn: 256251

1 files changed, 3 insertions, 1 deletions

diff --git a/lldb/source/Commands/CommandObjectFrame.cpp b/lldb/source/Commands/CommandObjectFrame.cpp
index e8dc33a8140..9477b50a58d 100644
--- a/lldb/source/Commands/CommandObjectFrame.cpp
+++ b/lldb/source/Commands/CommandObjectFrame.cpp
@@ -262,8 +262,10 @@ protected:
             }
             else
             {
-                result.AppendError ("invalid arguments.\n");
+                result.AppendErrorWithFormat ("too many arguments; expected frame-index, saw '%s'.\n",
+                                              command.GetArgumentAtIndex(0));
                 m_options.GenerateOptionUsage (result.GetErrorStream(), this);
+                return false;
             }
         }