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Type: Bug
Resolution: Fixed
Priority: P3
Fix Version/s: 6u2
Affects Version/s: 5.0u4, 6u1
Component/s: hotspot
Labels:

Subcomponent:
compiler
Introduced In Build:
1.4
Introduced In Version:

1.4.0
Resolved In Build:
b01
CPU:

generic
OS:

generic

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-2144703	5.0u12	John Rose	P3	Resolved	Fixed	b01

There is a bug in the inlining of Class.getModifiers. The result type of Class.getModifiers is labeled as a "boolean" to the optimizer instead of "int". An inlined isFinal call masks with 16 - which against a boolean always returns a 0 (masking against an int produces the obvious extract instructions). Bug can be reproduced by running JCK test "javasoft.sqe.tests.api.java.lang.Class.GetModifiersTests -TestCaseID ALL"
using C2 -Xcomp. A suggested fix is provided.

###@###.### 2005-07-15 00:08:19 GMT

backported by

JDK-2144703 The result type of Class.getModifiers is labeled as a "boolean" to the optimizer instead of "int"

Resolved

duplicates

JDK-6489569 One particular intrinsic is incorrectly generated, and hence an inconsistent IR.

Closed

relates to

JDK-6461827 Performance: java.lang.Class.isAssignable

Resolved

Assignee:: John Rose

Reporter:: Marvin Ma (Inactive)

Votes:: 0 Vote for this issue

Watchers:: 0 Start watching this issue

Created:: 2005-07-14 17:08

Updated:: 2010-10-20 00:38

Resolved:: 2007-03-28 19:14

Imported:: 17/Sep/12 12:11 AM

Indexed:: 19/Jul/12 5:46 PM

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