8252916: Newline in object field values list of ScopeDesc should be removed

[TobiHartmann]

Given the following test:

public class Test {

    static class MyClass {
        Object o1 = null;
        Object o2 = new Integer(42);
    }

    static Object test(boolean trap) {
        MyClass obj = new MyClass();
        if (trap) { }
        return obj.o1;
    }

    public static void main(String[] args) {
        for (int i = 0; i < 100_000; ++i) {
            test(false);
        }
    }
}

The ScopeDesc for the uncommon trap in C2 compiled 'test' is printed like this:

ScopeDesc(pc=0x00007f52a5160144 offset=84):
   Test::test@9 (line 11) reexecute=true
   Locals
    - l0: empty
    - l1: obj[52]
   Expression stack
    - @0: reg rbp [10],int
   Objects
    - 52: Test$MyClass NULL
, stack[0],oop

There should be no newline after "NULL".

This is a regression from JDK-8202171 in JDK 12. The fix is to no print a new line in to be consistent with 'print_value_on'.

Thanks,
Tobias

---

Progress

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Issue

• JDK-8252916: Newline in object field values list of ScopeDesc should be removed

Reviewers

• Vladimir Ivanov (@iwanowww - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk pull/75/head:pull/75
$ git checkout pull/75

[bridgekeeper]

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[openjdk]

@TobiHartmann The following label will be automatically applied to this pull request: hotspot-compiler.

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[mlbridge]

Webrevs

• 00: Full (b7b04e7)

[iwanowww]

Looks good and trivial.

[iwanowww]

/reviewer add vlivanov

[openjdk]

@iwanowww Only the author (@TobiHartmann) is allowed to issue the reviewer command.

[TobiHartmann]

Thanks Vladimir!

[openjdk]

@TobiHartmann This change now passes all automated pre-integration checks. In addition to the automated checks, the change must also fulfill all project specific requirements

After integration, the commit message will be:

8252916: Newline in object field values list of ScopeDesc should be removed

Reviewed-by: vlivanov

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Since the source branch of this PR was last updated there have been 10 commits pushed to the master branch:

• 30fa8d5: 8157729: examples in LinkedHashMap and LinkedHashSet class doc use raw types
• 26c7218: 8252773: [TESTBUG] serviceability/jvmti/GetObjectSizeOverflow fails due to OOM conditions
• e20004d: 8249625: cleanup unused SkippedException in the tests under cds/appcds/dynamicArchive/methodHandles
• 63a5a12: 8252658: G1: Do not consider G1HeapWastePercent during region selection within a gc
• 001e51d: 8250563: Add KVHashtable::add_if_absent
• 91a20ca: 8252695: Shenandoah: clean up Graal enabled/disabled filter in tests
• 704f784: 8252871: fatal error: must own lock JvmtiThreadState_lock
• bf5da0c: 8252897: Minor .jcheck/conf update
• 7600274: 8252859: Inconsistent use of alpha in class AbsSeq
• 4fb1980: 8252853: AArch64: gc/shenandoah/TestVerifyJCStress.java fails intermittently with C1

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid automatic rebasing, please merge master into your branch, and then specify the current head hash when integrating, like this: /integrate 30fa8d5d341fbf64e84da13a05c8048afba25196.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[TobiHartmann]

/integrate

[openjdk]

@TobiHartmann Since your change was applied there have been 10 commits pushed to the master branch:

• 30fa8d5: 8157729: examples in LinkedHashMap and LinkedHashSet class doc use raw types
• 26c7218: 8252773: [TESTBUG] serviceability/jvmti/GetObjectSizeOverflow fails due to OOM conditions
• e20004d: 8249625: cleanup unused SkippedException in the tests under cds/appcds/dynamicArchive/methodHandles
• 63a5a12: 8252658: G1: Do not consider G1HeapWastePercent during region selection within a gc
• 001e51d: 8250563: Add KVHashtable::add_if_absent
• 91a20ca: 8252695: Shenandoah: clean up Graal enabled/disabled filter in tests
• 704f784: 8252871: fatal error: must own lock JvmtiThreadState_lock
• bf5da0c: 8252897: Minor .jcheck/conf update
• 7600274: 8252859: Inconsistent use of alpha in class AbsSeq
• 4fb1980: 8252853: AArch64: gc/shenandoah/TestVerifyJCStress.java fails intermittently with C1

Your commit was automatically rebased without conflicts.

Pushed as commit c655b70.

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