================
@@ -122,8 +123,14 @@ struct ForkLaunchInfo {
ExitWithError(error_fd, "close");
break;
case FileAction::eFileActionDuplicate:
- if (dup2(action.fd, action.arg) == -1)
- ExitWithError(error_fd, "dup2");
+ if (action.fd != action.arg) {
----------------
slydiman wrote:
Probably it is better to add a new eFileAction*** instead of the condition
`action.fd == action.arg`.
https://github.com/llvm/llvm-project/pull/137978
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