[JIRA] (JENKINS-59844) Process Launcher shouldn't throw ArrayIndexOutOfBoundException on empty command

[ealva...@cloudbees.com (JIRA)]

Title: Message Title

Esther Álvarez Feijoo created an issue   Jenkins / JENKINS-59844 Process Launcher shouldn't throw ArrayIndexOutOfBoundException on empty command Issue Type: Improvement Assignee: Unassigned Components: core Created: 2019-10-18 13:03 Environment: Oracle JRE 8 and 11 Jenkins 2.190.1 Priority: Minor Reporter: Esther Álvarez Feijoo If you try to launch a blank command  ('  ') using Launch.ProcStarter#cmdAsSingleString, an ArrayIndexOutOfBoundException is thrown. Example of command invocation: launcher.launch() .cmdAsSingleString(" ") .envs(computer.getEnvironment()) .readStdout() .pwd(rootPath) .start(); Exception thrown: java.lang.ArrayIndexOutOfBoundsException: 0 at java.lang.ProcessBuilder.start(ProcessBuilder.java:1014) at hudson.Proc$LocalProc.<init>(Proc.java:249) at hudson.Proc$LocalProc.<init>(Proc.java:218) at hudson.Launcher$LocalLauncher.launch(Launcher.java:930) at hudson.Launcher$ProcStarter.start(Launcher.java:450) at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1299) at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1260) at hudson.remoting.UserRequest.perform(UserRequest.java:205) at hudson.remoting.UserRequest.perform(UserRequest.java:52) at hudson.remoting.Request$2.run(Request.java:356) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) This exception is odd, and difficult to understand. In my understanding, the cause of the error (invalid command) should be more clear, and ideally, validated sooner. Add Comment   This message was sent by Atlassian Jira (v7.13.6#713006-sha1:cc4451f) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-issues/JIRA.202579.1571403818000.10373.1571403840154%40Atlassian.JIRA.