cli: Fix invalid option message.

[apitrace] / cli / cli_pickle.cpp

diff --git a/cli/cli_pickle.cpp b/cli/cli_pickle.cpp
index 3a9129f8782d0f4a1dc7b2d81616c37c0654e273..0605773385fd3ac868ccde7009e0102c48e28706 100644 (file)
--- a/cli/cli_pickle.cpp
+++ b/cli/cli_pickle.cpp
@@ -238,7 +238,7 @@ command(int argc, char *argv[])
             calls = trace::CallSet(optarg);
             break;
         default:
-            std::cerr << "error: unexpected option `" << opt << "`\n";
+            std::cerr << "error: unexpected option `" << (char)opt << "`\n";
             usage();
             return 1;
         }