When last pattern in deque [positivePatternStack] is not matching in HsErrFile, it comes out of the loop and check whether the positivePatternStack is empty or not, which turns to be empty since pollFirst() removes the pattern.

This has been noticed in the TestSigInfoInHsErrFile.java where the segfault address for AIX is set as "0x0*1400" instead of "0xffffffffffffffff", which should throw the expected error but the error is neglected due to empty deque and the test is passed.

Expected/Desired Behaviour :

END.
STDERR:
java.lang.RuntimeException: hs-err file incomplete (first missing pattern: siginfo: si_signo: \d+ \(SIGSEGV\), si_code: \d+ \(SEGV_.*\), si_addr: 0x0*1400.*)
        at HsErrFileUtils.checkHsErrFileContent(HsErrFileUtils.java:136)
        at HsErrFileUtils.checkHsErrFileContent(HsErrFileUtils.java:71)
        at TestSigInfoInHsErrFile.main(TestSigInfoInHsErrFile.java:74)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:578)
        at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
        at java.base/java.lang.Thread.run(Thread.java:1623)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test


TEST RESULT: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: hs-err file incomplete (first missing pattern: siginfo: si_signo: \d+ \(SIGSEGV\), si_code: \d+ \(SEGV_.*\), si_addr: 0x0*1400.*)