Assertion failed: int pressure is incorrect

Andrew Haley aph at
Mon Dec 8 12:58:07 UTC 2014

I'm occasionally seeing this:

# A fatal error has been detected by the Java Runtime Environment:
#  Internal Error (/scratch1/large-codecache/hotspot/src/share/vm/opto/ifg.cpp:693), pid=9212, tid=4395909313024
#  assert(int_pressure.current_pressure() == count_int_pressure(liveout)) failed: the int pressure is incorrect

Does anyone know what might cause this?  Perhaps a bug in my back
end?  If not, can I please have some advice about how to debug it?

I'm only seeing this with a fairly recent cut of JDK9.


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