posix_spawn: Add support for posix_spawn_file_actions_addchdir_np #304
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Previously the `configure` script would check for `posix_spawn_file_actions_addchdir` yet then the implementation would look for `HAVE_posix_spawn_file_actions_addchdir_np`. Fix this.
It appears that glibc still has not introduced support for `posix_spawn_file_actions_addchdir`, despite it being ratified by Austin Group. Add support for `posix_spawn_file_actions_addchdir_np` as a stop-gap solution since the removal of the `vfork` path has turned up some pathological cases in the `fork` path in user code.
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FWIW I raised #303 with a bit more background. |
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It appears that glibc still has not introduced support for
posix_spawn_file_actions_addchdir, despite it being ratified by Austin Group. Add support forposix_spawn_file_actions_addchdir_npas a stop-gap solution since the removal of thevforkpath has turned up some pathological cases in theforkpath in user code.Also fix a typo which rendered the previous
posix_spawn_file_actions_addchdir_nppath unusable.