[OpenJDK 2D-Dev]  RFR JDK-8152561: Is it allowed to have zero value for count in TIFFField.createArrayForType() for the rationals
Jayathirth D V
jayathirth.d.v at oracle.com
Wed Jan 18 09:03:10 UTC 2017
Thanks for your review.
Now I am forcing all testcases to run even if any initial testcase fails.
I have divided all 4 test cases into different functions and I am throwing proper RuntimeException based on what test case is failing.
Please find updated webrev for review :
From: Prasanta Sadhukhan
Sent: Tuesday, January 17, 2017 12:48 PM
To: Jayathirth D V; Philip Race; Brian Burkhalter; 2d-dev
Subject: Re: [OpenJDK 2D-Dev]  RFR JDK-8152561: Is it allowed to have zero value for count in TIFFField.createArrayForType() for the rationals
Looks good to me.
Only thing is that in the test, if one test fails it will not proceed to the next test. I think we should test all combinations and fail at last with the informations of all failed combinations.
On 1/11/2017 11:19 PM, Jayathirth D V wrote:
Please review the following fix in JDK9:
Bug : https://bugs.openjdk.java.net/browse/JDK-8152561
Webrev : HYPERLINK "http://cr.openjdk.java.net/%7Ejdv/8152561/webrev.00/"http://cr.openjdk.java.net/~jdv/8152561/webrev.00/
Issue : There is difference in how we interpret "count" variable passed to TIFFField.createArrayForType(int dataType, int count) and constructor TIFFField(TIFFTag tag, int type, int count, Object data).
Root cause : There are certain limitation on what the "count" value should be based on dataType of TIFFTag. We check these conditions in TIFFField(TIFFTag tag, int type, int count, Object data) but we don't verify all the conditions in TIFFField.createArrayForType(int dataType, int count).
Solution : Verify all the required conditions that has to be applied on "count" variable based on datatype of TIFFTag in TIFFField.createArrayForType(int dataType, int count). Also I have made specification changes for TIFFField(TIFFTag tag, int type, int count) which will elaborate on what exceptions will be thrown if we don't follow same "count" and "dataType" relationship.
Note : Because of tighter conditions in TIFFField.createArrayForType(int dataType, int count) under the proposed fix 2 JCK tests are failing.
1) api/javax_imageio/plugins/tiff/TIFFField/index.html#TIFFFieldTest : CreateArrayForType_ValidScenario
This is failing because they are passing count values of 0 for TIFFTag.TIFF_RATIONAL & TIFFTag.TIFF_SRATIONAL which will throw IAE. Also it will throw IAE if we pass count value 0 or 2 for TIFFTag.TIFF_IFD_POINTER.
2) api/javax_imageio/plugins/tiff/TIFFField/index.html#ConstructorTests : Constructor02_TagIsNull_ThrowNPE
I think this scenario expects constructor to throw NPE when "tag" is null. But before it checks for "tag" value in TIFFField(TIFFTag tag, int type, int count, Object data) we call TIFFField.createArrayForType(int dataType, int count) to create needed data. So like mentioned in previous JCK test which is failing, we will be throwing IAE in all cases where as test expects us to throw NPE.
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