In the 2 core related tests TestJmapCore.java and TestJmapCoreMetaspace.java we run into the errors below when using asan-enabled binaries. This is most likely because we do not write cores any more with asan; seems to be related to JDK-8368365 .

# Internal Error (debug.cpp:282), pid=25655, tid=25658
# fatal error: OutOfMemory encountered: Java heap space
#
# JRE version: OpenJDK Runtime Environment (26.0) (build 26-internal-adhoc.sapmachine.jdk)
# Java VM: OpenJDK 64-Bit Server VM (26-internal-adhoc.sapmachine.jdk, mixed mode, sharing, tiered, compressed oops, compact obj headers, g1 gc, linux-amd64)
# CreateCoredumpOnCrash turned off, no core file dumped
#
# An error report file with more information is saved as:
# /data/jvmtests/output_openjdk26_weekly_optU_linuxx86_64/jtreg_hotspot_tier2_work/JTwork/scratch/7/hs_err_pid25655.log
]
----------System.err:(15/877)----------
java.lang.RuntimeException: Output doesn't contain the location of core file.: expected true, was false
                at jdk.test.lib.Asserts.fail(Asserts.java:715)
                at jdk.test.lib.Asserts.assertTrue(Asserts.java:545)
                at jdk.test.lib.util.CoreUtils.parseCoreFileLocationFromOutput(CoreUtils.java:211)
                at jdk.test.lib.util.CoreUtils.getCoreFileLocation(CoreUtils.java:108)
                at TestJmapCore.test(TestJmapCore.java:86)
                at TestJmapCore.main(TestJmapCore.java:70)
                at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
                at java.base/java.lang.reflect.Method.invoke(Method.java:565)
                at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:335)
                at java.base/java.lang.Thread.run(Thread.java:1516)

and

#
# Internal Error (debug.cpp:282), pid=25694, tid=25699
# fatal error: OutOfMemory encountered: Metaspace
#
# JRE version: OpenJDK Runtime Environment (26.0) (build 26-internal-adhoc.sapmachine.jdk)
# Java VM: OpenJDK 64-Bit Server VM (26-internal-adhoc.sapmachine.jdk, mixed mode, sharing, tiered, compressed oops, compact obj headers, g1 gc, linux-amd64)
# CreateCoredumpOnCrash turned off, no core file dumped
#
# An error report file with more information is saved as:
# /data/jvmtests/output_openjdk26_weekly_optU_linuxx86_64/jtreg_hotspot_tier2_work/JTwork/scratch/9/hs_err_pid25694.log
]
----------System.err:(15/877)----------
java.lang.RuntimeException: Output doesn't contain the location of core file.: expected true, was false
                at jdk.test.lib.Asserts.fail(Asserts.java:715)
                at jdk.test.lib.Asserts.assertTrue(Asserts.java:545)
                at jdk.test.lib.util.CoreUtils.parseCoreFileLocationFromOutput(CoreUtils.java:211)
                at jdk.test.lib.util.CoreUtils.getCoreFileLocation(CoreUtils.java:108)
                at TestJmapCore.test(TestJmapCore.java:86)
                at TestJmapCore.main(TestJmapCore.java:70)
                at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
                at java.base/java.lang.reflect.Method.invoke(Method.java:565)
                at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:335)
                at java.base/java.lang.Thread.run(Thread.java:1516)