[OpenJDK 2D-Dev] [12] JDK-8212202: NPE in the print tests after JDK-8153732

Shashidhara Veerabhadraiah shashidhara.veerabhadraiah at oracle.com
Tue Dec 4 15:20:54 UTC 2018

Hi Sergey, It is true that if there are no printers connected to the system we should be getting the exception but all of windows system at least contains 'Fax', 'Microsoft print to PDF' as default printers in the printers list. Ideally it is true that a null return case must have been handled. 
So I simulated this effect by setting cReturned to zero causing a NPE to trigger with the old code and then applied the fix and found that there is no NPE anymore.

Thanks and regards,

-----Original Message-----
From: Sergey Bylokhov 
Sent: Tuesday, December 4, 2018 11:42 AM
To: Shashidhara Veerabhadraiah <shashidhara.veerabhadraiah at oracle.com>; Philip Race <philip.race at oracle.com>; Prasanta Sadhukhan <prasanta.sadhukhan at oracle.com>; 2d-dev at openjdk.java.net
Subject: Re: [OpenJDK 2D-Dev] [12] JDK-8212202: NPE in the print tests after JDK-8153732

Hi, Shashi.

> The big problem was that I was not able to reproduce this problem neither at my end nor at the systems used for PIT testing. Only Sergey had produced this NPE till now.
If you cannot reproduce this exception on the system w/o printers, then it is interesting what will return this code:

  260                        NULL, 4, pPrinterEnum, cbNeeded, &cbNeeded,
  261                        &cReturned);
  263         if (cReturned > 0) {....}

what will happen if you try to print something to the printer which is returned in the case above?

Best regards, Sergey.

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