The PNG reader plug-in optimizes the case where a particular progressive
pass is empty, avoiding the creation of a one-scanline high Raster used to
transfer data from the image being read into the output image. However,
in some cases this Raster is (correctly) not created, but an attempt is
made to create a child Raster which will never be used. The fix is to
add a check for a null vlaue prior to attempting to create the child Raster.

  The test test/javax/imageio/IRPTest.java will act as a regression test
for this bug.
--------------------------------------------

al.smith@eng 2001-04-17

Regression test javax/imageio/IRPTest.java fails with Merlin build build60 on sol2.7, host tiggr. The previous build this test passed with was b57.

 For test hardware config's, see http://sqesvr.eng/st3/jdk1.4/docs/Merlin-hw.html

#Test Results (version 2)
#Mon Apr 16 22:06:13 PDT 2001
#checksum:35b124bd20532eb0
#-----testdescription-----
$file=/export1/regression/merlin/jdk1.4Tests/b60/javax/imageio/IRPTest.java
$root=/export1/regression/merlin/jdk1.4Tests/b60
keywords=bug4395755 bug4399454 bug4399473 bug4399076 bug4284166 bug4409804 bug4409809
run=USER_SPECIFIED main IRPTest\n
source=IRPTest.java
title=Checks that the geoemtric clipping and subsampling performed by ImageReadParams work correctly for the standard plug-ins

#-----environment-----

#-----testresult-----
description=file:///export1/regression/merlin/jdk1.4Tests/b60/javax/imageio/IRPTest.java
end=Mon Apr 16 22:06:13 PDT 2001
environment=regtest
execStatus=Failed. Execution failed: Program `/export1/java/jdk14b60/bin/java' interrupted! (timed out?)
javatestOS=SunOS 5.7 (sparc)
javatestVersion=2.1.5
script=com.sun.javatest.regtest.RegressionScript
sections=script_messages build compile main
start=Mon Apr 16 22:04:10 PDT 2001
status=Failed. Execution failed: Program `/export1/java/jdk14b60/bin/java' interrupted! (timed out?)
test=javax/imageio/IRPTest.java
work=/export0/results/regression/merlin/b60/tiggr5.7-jthb60-jdk14b60.04-16.19.50-noAwt2-64/javax/imageio

#section:script_messages
----------messages:(5/239)----------
JDK under test: (/export1/java/jdk14b60)
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b60)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b60, mixed mode)
Timeout signalled after 120.0 seconds

#section:build
----------messages:(3/93)----------
command: build IRPTest
reason: Named class compiled on demand
elapsed time (seconds): 3.238
result: Passed. Compilation successful

#section:compile
----------messages:(3/168)----------
command: compile /export1/regression/merlin/jdk1.4Tests/b60/javax/imageio/IRPTest.java
reason: .class file out of date or does not exist
elapsed time (seconds): 3.236
----------System.out:(0/0)----------
----------System.err:(0/0)----------
result: Passed. Compilation successful

#section:main
----------messages:(3/103)----------
command: main IRPTest
reason: User specified action: run main IRPTest
elapsed time (seconds): 120.008
----------System.out:(3/254)----------
Testing /export1/regression/merlin/jdk1.4Tests/b60/javax/imageio/images/basi0g01.png
Testing /export1/regression/merlin/jdk1.4Tests/b60/javax/imageio/images/bgbn4a08.png
Testing /export1/regression/merlin/jdk1.4Tests/b60/javax/imageio/images/gosling.jpg
----------System.err:(0/0)----------
result: Failed. Execution failed: Program `/export1/java/jdk14b60/bin/java' interrupted! (timed out?)

test result: Failed. Execution failed: Program `/export1/java/jdk14b60/bin/java' interrupted! (timed out?)