C2 assertion failure with ExtendedDTraceProbes

[Zhengyu Gu]

Hi Roland,

Could you please take a look:

make CONF=linux-x86_64-normal-server-fastdebug run-test 
TEST=gc/shenandoah/CriticalNativeArgs.java 
JTREG="VM_OPTIONS=-XX:+ExtendedDTraceProbes"


# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc:  SuppressErrorAt=/shenandoahSupport.cpp:4018
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error 
(/home/zgu/workspace/shenandoah-jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp:4018), 
pid=6569, tid=6580
#  Error: assert(new_mem->outcnt() > 0) failed
#
# JRE version: OpenJDK Runtime Environment (12.0) (fastdebug build 
12-internal+0-adhoc.zgu.shenandoah-jdk)
# Java VM: OpenJDK 64-Bit Server VM (fastdebug 
12-internal+0-adhoc.zgu.shenandoah-jdk, compiled mode, tiered, 
compressed oops, shenandoah gc, linux-amd64)
# Core dump will be written. Default location: 
/home/zgu/workspace/shenandoah-jdk/build/linux-x86_64-normal-server-fastdebug/test-support/jtreg_test_hotspot_jtreg_gc_shenandoah_CriticalNativeArgs_java/scratch/0/core.6569
#


Thanks,

-Zhengyu