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From: Joachim =?ISO-8859-1?Q?Schr=F6er?= <joachim.schroeer@dornier.eads.net>
Newsgroups: comp.lang.ada
Subject: JGnat / j2sdk1.4.0 Problem
Date: Mon, 25 Feb 2002 10:57:10 +0100
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Date: 2002-02-25T10:57:10+01:00
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Hello,

I installed JGnat 1.1p and j2sdk1.4.0.
The Hello example works but executing a simple testprogram performing a 
matrix-multiplication gives the following java exception:

----------------------------------------------------------------------------
C:\Ada95\bin\JGnat>
C:\Ada95\bin\JGnat>java -showversion testmat
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

Exception in thread "main" java.lang.IllegalMonitorStateException
         at 
jgnat.adalib.system$task_primitives$operations.write_lock__2(s-taprop.adb:229)
         at 
jgnat.adalib.system$task_primitives$operations.lock_all_tasks_list(s-taprop.adb:771)
         at 
jgnat.adalib.system$task_primitives$operations.enter_task(s-taprop.adb:373)
         at 
jgnat.adalib.system$task_primitives$operations.initialize(s-taprop.adb:834)
         at jgnat.adalib.system$tasking._elabb(s-taskin.adb:186)
         at ada_testmat.adainit(b~testmat.adb:107)
         at testmat.main(testmat.adb)

C:\Ada95\bin\JGnat>
----------------------------------------------------------------------------

The program does not use any explicit Ada-tasks.

Thanks for any help.

     J. Schr�er