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ICU-5887 Workaround for Java 6 adaptive compiler bug on Solaris/Linux

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X-SVN-Rev: 22628
This commit is contained in:
Yoshito Umaoka 2007-09-06 04:01:16 +00:00
parent 270b247475
commit f7286f7ed6
1 changed files with 12 additions and 1 deletions
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13
icu4j/src/com/ibm/icu/util/SimpleTimeZone.java
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@ -769,14 +769,25 @@ public class SimpleTimeZone extends BasicTimeZone {
++month;
}
}
/*
* For some reasons, Sun Java 6 on Solaris/Linux has a problem with
* the while loop below (at least Java 6 up to build 1.6.0_02-b08).
* It looks the JRE messes up the variable 'millis' while executing
* the code in the while block. The problem is not reproduced with
* JVM option -Xint, that is, it is likely a bug of the HotSpot
* adaptive compiler. Moving 'millis += Grego.MILLIS_PER_DAY'
* to the end of this while block seems to resolve the problem.
* See ticket#5887 about the problem in detail.
*/
while (millis < 0) {
millis += Grego.MILLIS_PER_DAY;
//millis += Grego.MILLIS_PER_DAY;
--dayOfMonth;
dayOfWeek = 1 + ((dayOfWeek+5) % 7); // dayOfWeek is one-based
if (dayOfMonth < 1) {
dayOfMonth = prevMonthLen;
--month;
}
millis += Grego.MILLIS_PER_DAY;
}
if (month < ruleMonth) return -1;