" This program consolidates multiple XRay trace "
"processing tools for convenient access.\n");
for (auto *SC : cl::getRegisteredSubcommands()) {
- if (*SC)
+ if (*SC) {
+ // If no subcommand was provided, we need to explicitly check if this is
+ // the top-level subcommand.
+ if (SC == &*cl::TopLevelSubCommand) {
+ cl::PrintHelpMessage(false, true);
+ return 0;
+ }
if (auto C = dispatch(SC)) {
ExitOnError("llvm-xray: ")(C());
return 0;
}
+ }
}
+ // If all else fails, we still print the usage message.
cl::PrintHelpMessage(false, true);
}