posix_spawn_file_actions_adddup2
Note
This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.
Interface Synopsis
namespace HH\Lib\OS;
final class posix_spawn_file_actions_adddup2 extends \HH\Lib\_Private\_OS\PosixSpawnFileActionDecorator implements PosixSpawnFileActionsSetter {...}