RFR 7014526: "java -version" crash on sparc with some values of HeapBaseMinAddress

[Coleen Phillimore]

On 2/18/14 11:13 AM, Thomas Schatzl wrote:
> Hi Coleen,
>
> On Tue, 2014-02-18 at 09:54 -0500, Coleen Phillimore wrote:
>> I fixed the indentation and I changed it to %d because it's %dM.  The
>> %x was temporary for my debugging.
>    iirc there is a UINTX_FORMAT constant specifically to be used as the
> format string for uintx values.
>
> Is it possible to also write the value selected by the user to make
> the problem more clear? I.e. "HeapBaseMinAddress must be at least ..., but
> is ...".
>
> Also I am not sure if dividing by M does not cut significant digits too
> much, but I guess people are mostly going to use MB here anyway.

I divided by M to avoid this sort of output, which looks like a 
meaningless bunch of digits to me.

% java -XX:+PrintCommandLineFlags -version
-XX:InitialHeapSize=1035993088 -XX:MaxHeapSize=16575889408 
-XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers 
-XX:+UseCompressedOops -XX:+UseParallelGC

How about:

java -d64 -XX:HeapBaseMinAddress=128 -XX:+PrintMiscellaneous 
-XX:+Verbose -version
...
HeapBaseMinAddress must be at least 6442450944 (6G) which is greater 
than value given 128
...

All the defaults are in G.  If that changes we could make the message 
divide by M.

Thanks,
Coleen

>
> Thanks,
>    Thomas
>
>
>