[OpenJDK 2D-Dev] Segment fault when loading sun.font.StrikeCache at first

[Charles Lee]

Hi Phil,

I guess it is

"sun.font.StrikeCache.getStrikeRef(null);"

"getStrikeRef" is a public api from a public class in a not so public 
package.:-)

Here is the story:
The problem is emitted from one of our VM classloading robust test case. 
The patch is trivial, but since it will cause VM crash, I am trying to 
give it a shot.


On 03/14/2012 01:40 AM, Phil Race wrote:
> Do you have a public API level program that exhibits this ?
>
> I don't consider the internal test you provide as a valid execution path
> that needs this attention.
>
> -phil.
>
> On 3/13/12 12:16 AM, Charles Lee wrote:
>> Hi guys,
>>
>> I have create a sunbug @ 
>> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7153293
>>
>> It is mainly about:
>> When loading sun.font.StrikeCache before sun.font.SunFontManager (or 
>> something else), there will be an UnsatisfiedLinkError thrown. The 
>> reason is there is a native call in its static initialize block, but 
>> the native library is not loaded in yet.
>> The problem will do harm, if user load SunFontManager after failing 
>> on loading StrkeCache. You will see a VM crash occurred.
>> The problem will do more harm, because user can never load 
>> StrikeCache, SunLayoutEngine successfully.
>>
>> The patch is @ http://cr.openjdk.java.net/~littlee/7153293/webre.00/ 
>> <http://cr.openjdk.java.net/%7Elittlee/7153293/webre.00/>
>> It is straightforward. Just loading the native library at the 
>> beginning of static initializer of StrikeCache.
>>
>> Would anyone help to review this?
>>
>


-- 
Yours Charles