[armedbear] #422: SYSTEM:RUN-PROGRAM does not work on Java 5/6

[armedbear]

#422: SYSTEM:RUN-PROGRAM does not work on Java 5/6
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 Reporter:  mevenson                            |           Owner:
     Type:  defect                              |          Status:  new
 Priority:  major                               |       Milestone:  1.5.0
Component:  interpreter                         |         Version:  1.4.0
 Keywords:  cffi sys:run-progrom java-5 java-6  |  Parent Tickets:
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 In chasing down the errors with CFFI on CL-TEST-GRID <https://mailman
 .common-lisp.net/pipermail/armedbear-devel/2016-October/003719.html>, I
 have found that the [java.lang.ProcessBuilder$Redirect][] interface used
 by Elias and Olof to extend SYS:RUN-PROGRAM for different types of I/O
 abstractions was introduced with Java 7, and will hence not work on
 earlier Java implementations.

 [java.lang.ProcessBuilder$Redirect]:
 https://docs.oracle.com/javase/8/docs/api/java/lang/ProcessBuilder.Redirect.html

 Invoking ABCL-ASDF:ENSURE-MVN-VERSION, the following form causes the error
 {{{
 (JFIELD "java.lang.ProcessBuilder$Redirect" "INHERIT")
 }}}

 TODO: investigate the Java 6 APIs to see if there is a way to do I/O
 redirection with backwards compatibility.  I currently suspect that there
 is no way to support Java 5/6 for this usage, which is why we never
 implemented I/O redirection previously.

 There is undoubtedly a way re-write the SYS:RUN-PROGRAM interface so that
 we may invoke a process to read its output as a string in Java 5/Java 6,
 as it worked before.  But we will have to figure out a way to advertise
 the different features of SYS:RUN-PROGRAM depending on the hosting VM.

 Longer term, we may want to deprecate Java 5/6, but I would really have
 the compiler emit Java 7-compatible bytecode (mainly by passing the Java 6
 verification process) before we begin that.

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Ticket URL: <http://abcl.org/trac/ticket/422>
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