RFR(S): 8205946: JVM crash after call to ClassLoader::setup_bootstrap_search_path()

[Lois Foltan]

On 7/9/2018 1:29 PM, Calvin Cheung wrote:

> bug: https://bugs.openjdk.java.net/browse/JDK-8205946
>
> webrev: http://cr.openjdk.java.net/~ccheung/8205946/webrev.00/
>
> The JVM crash could be simulated by renaming/removing the modules file 
> under the jdk/lib directory.
> The proposed simple fix is to perform a vm_exit_during_initialization().

Hi Calvin,

Some clarifying questions.  Is this just an issue for exploded builds?  
I would prefer the exit to occur if the os::stat() fails for the system 
class path in os::set_boot_path().  With certainly an added assert later 
in ClassLoader::setup_bootstrap_search_path() to ensure that the system 
class path is never NULL.

Thanks,
Lois

>
> Ran hs-tier{1,2,3} tests successfully including the new test case.
>
> thanks,
> Calvin