TestJhsdbJstackMixedCore.java introduced in [JDK-8374482](https://bugs.openjdk.org/browse/JDK-8374482) failed on Alpine because musl-c does not provide the symbol of signal trampoline (`__restore_rt` on Linux Kernel for AMD64) as following:
java.lang.RuntimeException: '<signal handler called>' missing from stdout/stderr at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:253) at TestJhsdbJstackMixedCore.runJstackMixed(TestJhsdbJstackMixedCore.java:62) at TestJhsdbJstackMixedCore.main(TestJhsdbJstackMixedCore.java:74) 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) It would success if debuginfo is installed, but it should be skipped if the symbol is not available. See JBS for details. ------------- Commit messages: - 8376284: New test serviceability/sa/TestJhsdbJstackMixedCore.java from JDK-8374482 fails on Linux Alpine Changes: https://git.openjdk.org/jdk/pull/29480/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29480&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8376284 Stats: 122 lines in 2 files changed: 120 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/29480.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/29480/head:pull/29480 PR: https://git.openjdk.org/jdk/pull/29480
