From a JPRT run on Solaris sparcv9:

STDOUT:
Testing:
/opt/jprt/T/T1/013053.daholme/testproduct/solaris_sparcv9_5.11-fastdebug/bin/java -Duser.home=/opt/jprt/T/T1/013053.daholme -Djava.io.tmpdir=/opt/jprt/T/T1/013053.daholme/io/solaris_sparcv9_5.11-fastdebug-c2-hotspot_tier1_gc_2 -server -XX:AllocateHeapAt=. -Xlog:gc+heap=info -Xmx32m -Xms32m -version
Command line: [/opt/jprt/T/T1/013053.daholme/testproduct/solaris_sparcv9_5.11-fastdebug/bin/java -cp /opt/jprt/T/T1/013053.daholme/s/closed/test/hotspot/testoutput/hotspot_tier1_gc_2/JTwork/hotspot_jtreg_0/classes/0/gc/TestAllocateHeapAt.d:/opt/jprt/T/T1/013053.daholme/s/open/test/hotspot/jtreg/gc:/opt/jprt/T/T1/013053.daholme/s/closed/test/hotspot/testoutput/hotspot_tier1_gc_2/JTwork/hotspot_jtreg_0/classes/0/test/lib:/opt/jprt/jib-data/install/java/re/jtreg/4.2/promoted/all/b10/bundles/jtreg_bin-4.2.zip/jtreg/lib/javatest.jar:/opt/jprt/jib-data/install/java/re/jtreg/4.2/promoted/all/b10/bundles/jtreg_bin-4.2.zip/jtreg/lib/jtreg.jar -Duser.home=/opt/jprt/T/T1/013053.daholme -Djava.io.tmpdir=/opt/jprt/T/T1/013053.daholme/io/solaris_sparcv9_5.11-fastdebug-c2-hotspot_tier1_gc_2 -server -XX:AllocateHeapAt=. -Xlog:gc+heap=info -Xmx32m -Xms32m -version ]
Output:
[0.033s][info][gc,heap] Heap region size: 1M
Error occurred during initialization of VM
Error in mapping Java heap at the given filesystem directory.

STDERR:
 stdout: [[0.033s][info][gc,heap] Heap region size: 1M
Error occurred during initialization of VM
Error in mapping Java heap at the given filesystem directory.
];
 stderr: []
 exitValue = 1

java.lang.RuntimeException: 'Successfully allocated Java heap at location' missing from stdout/stderr

at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:135)
at TestAllocateHeapAt.main(TestAllocateHeapAt.java:65)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainActionHelper$SameVMRunnable.run(MainActionHelper.java:230)
at java.base/java.lang.Thread.run(Thread.java:844)