The AOT library must be built with the same UseEmptySlotsInSupers value as used at runtime, since AOT assumes that all field offsets are the same as at runtime. When a mismatched UseEmptySlotsInSupers is specified, AOT code can fail.

Here's a simple reproducer that fails with a fastdebug build from a recent openjdk repo:

==========================================================================================
# doit.sh
# Please edit the following two lines
export JAVA_HOME=/jdk/bld/fastdebug/images/jdk
export DEVKIT=/home/iklam/devkit/latest

# Gather the list of classes to compile
${JAVA_HOME}/bin/java -Xshare:off -verbose -version 2> /dev/null | grep class.load.*jrt..java.base \
    | sed -e 's/.*class,load..//g' -e 's/ source.*//g' > classes.txt

# This takes about 160 seconds on a fast machine
if test ! -f test.so; then
    time ${JAVA_HOME}/bin/jaotc \
        --info \
        -J-Xmx4g \
        -J-server \
        -J-ea \
        -J-esa \
        --compile-commands open/test/hotspot/jtreg/compiler/aot/scripts/java.base-list.txt \
        --linker-path ${DEVKIT}/bin/ld \
        --compile-with-assertions \
        --output \
        test.so \
        --class-name $(cat classes.txt) | tee test.so.log
fi

echo "=== running with +UseEmptySlotsInSupers (OK)"
${JAVA_HOME}/bin/java -Xshare:off -ea -esa -XX:+UnlockExperimentalVMOptions -XX:AOTLibrary=$(pwd)/test.so -XX:+UseEmptySlotsInSupers -version

echo "=== running with -UseEmptySlotsInSupers (will get stuck)"
${JAVA_HOME}/bin/java -Xshare:off -ea -esa -XX:+UnlockExperimentalVMOptions -XX:AOTLibrary=$(pwd)/test.so -XX:-UseEmptySlotsInSupers -version
==========================================================================================

$ bash doit.sh
=== running with +UseEmptySlotsInSupers (OK)
java version "16-internal" 2021-03-16
Java(TM) SE Runtime Environment (fastdebug build 16-internal+0-adhoc.iklam.open)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 16-internal+0-adhoc.iklam.open, mixed mode, aot)
=== running with -UseEmptySlotsInSupers (will get stuck)
^C