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Quick Lists
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Bug ID:
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6798785
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Votes
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0
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Synopsis
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Crash in OopFlow::build_oop_map: incorrect comparison of 64bit pointers
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Category
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hotspot:compiler2
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Reported Against
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Release Fixed
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hs15(b02),
6u13-rev(b07) (Bug ID:2172287)
, 5.0u18-rev(b06) (Bug ID:2172288)
, 7(b49) (Bug ID:2173679)
, hs14(b15) (Bug ID:2176413)
, 6u14(b06) (Bug ID:2176414)
, hs11.3(b06) (Bug ID:2176429)
, 5.0u19(b02) (Bug ID:2176568)
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State
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10-Fix Delivered,
Verified,
bug
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Priority:
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3-Medium
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Related Bugs
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6745807
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Submit Date
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28-JAN-2009
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Description
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When defining a Dict you specify the compare and hash functions and Dict provides a couple useful default. In particular for pointers it provides this:
// Slimey cheap key comparator.
int32 cmpkey(const void *key1, const void *key2) {
return (int32)((intptr_t)key1 - (intptr_t)key2);
}
Unforturnately in 64-bit mode this throws away the high 32 bits of the pointer.
Posted Date : 2009-01-28 20:29:15.0
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Work Around
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N/A
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Evaluation
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A traditional 3 way compare would work fine.
Posted Date : 2009-01-28 21:58:44.0
http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/1580954e694c
Posted Date : 2009-02-04 22:09:12.0
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Comments
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PLEASE NOTE: JDK6 is formerly known as Project Mustang
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