================
@@ -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) {
+ if (dup2(action.fd, action.arg) == -1)
+ ExitWithError(error_fd, "dup2");
+ } else {
+ if (fcntl(action.fd, F_SETFD,
+ fcntl(action.fd, F_GETFD) & ~FD_CLOEXEC) == -1)
----------------
DavidSpickett wrote:
Ok I understand. That concern has to be dealt with in the code that we execve
into.
https://github.com/llvm/llvm-project/pull/126935
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