diff --git a/lldb/test/Shell/lldb-server/TestErrorMessages.test b/lldb/test/Shell/lldb-server/TestErrorMessages.test
--- a/lldb/test/Shell/lldb-server/TestErrorMessages.test
+++ b/lldb/test/Shell/lldb-server/TestErrorMessages.test
@@ -1,13 +1,13 @@
-RUN: %lldb-server gdbserver --fd 2>&1 | FileCheck --check-prefixes=FD1,ALL %s
+RUN: not %lldb-server gdbserver --fd 2>&1 | FileCheck --check-prefixes=FD1,ALL %s
 FD1: error: --fd: missing argument
 
-RUN: %lldb-server gdbserver --fd three 2>&1 | FileCheck --check-prefixes=FD2,ALL %s
+RUN: not %lldb-server gdbserver --fd three 2>&1 | FileCheck --check-prefixes=FD2,ALL %s
 FD2: error: invalid '--fd' argument
 
-RUN: %lldb-server gdbserver --bogus 2>&1 | FileCheck --check-prefixes=BOGUS,ALL %s
+RUN: not %lldb-server gdbserver --bogus 2>&1 | FileCheck --check-prefixes=BOGUS,ALL %s
 BOGUS: error: unknown argument '--bogus'
 
-RUN: %lldb-server gdbserver 2>&1 | FileCheck --check-prefixes=CONN,ALL %s
+RUN: not %lldb-server gdbserver 2>&1 | FileCheck --check-prefixes=CONN,ALL %s
 CONN: error: no connection arguments
 
 ALL: Use '{{.*}} g[dbserver] --help' for a complete list of options.
diff --git a/lldb/tools/lldb-server/lldb-server.cpp b/lldb/tools/lldb-server/lldb-server.cpp
--- a/lldb/tools/lldb-server/lldb-server.cpp
+++ b/lldb/tools/lldb-server/lldb-server.cpp
@@ -52,29 +52,29 @@
   llvm::InitLLVM IL(argc, argv, /*InstallPipeSignalExitHandler=*/false);
   llvm::PrettyStackTraceProgram X(argc, argv);
 
-  int option_error = 0;
   const char *progname = argv[0];
   if (argc < 2) {
     display_usage(progname);
-    exit(option_error);
+    exit(1);
   }
 
+  int ret = 0;
   switch (argv[1][0]) {
   case 'g':
     llgs::initialize();
-    main_gdbserver(argc, argv);
+    ret = main_gdbserver(argc, argv);
     llgs::terminate_debugger();
-    break;
   case 'p':
     llgs::initialize();
-    main_platform(argc, argv);
+    ret = main_platform(argc, argv);
     llgs::terminate_debugger();
-    break;
   case 'v':
     fprintf(stderr, "%s\n", lldb_private::GetVersion());
+    ret = 0;
     break;
   default:
     display_usage(progname);
-    exit(option_error);
+    ret = 1;
   }
+  return ret;
 }