|
Quick Lists
|
|
Bug ID:
|
6709742
|
|
Votes
|
0
|
|
Synopsis
|
find_base_for_derived's use of Ideal NULL is unsafe causing crashes during register allocation
|
|
Category
|
hotspot:compiler2
|
|
Reported Against
|
|
|
Release Fixed
|
hs16(b02),
7(b57) (Bug ID:2177416)
|
|
State
|
10-Fix Delivered,
bug
|
|
Priority:
|
3-Medium
|
|
Related Bugs
|
6552204
,
6614100
|
|
Submit Date
|
02-JUN-2008
|
|
Description
|
PhaseChaitin::stretch_base_pointer_live_ranges stretches the base pointers for live ranges and in some cases may have to construct a NULL base in find_base_for_derived. It constructs an Ideal NULL instead of a mach one and if the Ideal NULL is ever used in Phi with real machine values we will die during register allocation. It's very hard to reproduce in practice though the changes for 6552204 causes it to occur with Eclipse in some cases.
Posted Date : 2008-06-02 20:27:15.0
|
|
Work Around
|
N/A
|
|
Evaluation
|
http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/04fa5affa478
Posted Date : 2009-04-23 02:36:25.0
|
|
Comments
|
PLEASE NOTE: JDK6 is formerly known as Project Mustang
|
|
|
|
