RFR (S): 8073154: NULL-pointer dereferencing in LIR_OpProfileType::print_instr

[Igor Veresov]

Looks good.

igor

> On Feb 24, 2015, at 10:56 PM, Filipp Zhinkin <filipp.zhinkin at gmail.com> wrote:
> 
> Hi all,
> 
> please review a small fix for 8073154.
> 
> LIR_OpProfileType's exact_klass is either a valid ciKlass when we know
> it statically,
> or a NULL when we don't.
> 
> Unfortunately, LIR_OpProfileType::print_instr is dereferencing it
> without a NULL-check.
> 
> I've decided to print "unknown" exact klass's value in case of NULL to
> be consistent
> with ciTypeEntries::print_ciklass. Missed whitespaces were also added.
> 
> Bug id: https://bugs.openjdk.java.net/browse/JDK-8073154
> Webrev: http://cr.openjdk.java.net/~fzhinkin/8073154/webrev.00/
> Testing: executed a test on my linux-x86_64 laptop.
> 
> Thanks,
> Filipp.