osx - Getting a crash in NSTask -


i've had report field of crash @ -launch on nstask.

the code in question is:

nstask *task = [[nstask alloc] init]; [task setlaunchpath:@"/bin/zsh"]; if(ignore) {     [task setarguments:@[scriptpath, recordingfolder, argument]]; } else {     [task setarguments:@[scriptpath, recordingfolder]]; }  nspipe *outpipe = [nspipe pipe]; [task setstandardoutput:outpipe];  nspipe *errorpipe = [nspipe pipe]; [task setstandarderror:errorpipe];  [task launch];

the scriptpath script included in app bundle. crash says:

*** terminating app due uncaught exception 'nsinternalinconsistencyexception', reason: 'failed set posix_spawn_file_actions fd -1 @ index 0 errno 9'

what cause of this? file descriptor posix_spawn_file_actions refer to? mean executable script wrong or outpipe or errpipe not formed?

i believe referring posix_spawn function: https://developer.apple.com/library/mac/documentation/darwin/reference/manpages/man2/posix_spawn.2.html

and errno 9 ebadf (bad file number).

i've got similar error , after use below command, it's ok, can try it.

nsfilehandle *file=[outpipe filehandleforreading]; [task launch]; ....//read file. //this important. [file closefile];

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