JDK-6795362 : 32bit server compiler leads to wrong results on solaris-x86
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: hs13
- Priority: P2
- Status: Closed
- Resolution: Fixed
- OS: solaris
- CPU: x86
- Submitted: 2009-01-19
- Updated: 2011-03-08
- Resolved: 2011-03-08
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| JDK 6 | JDK 7 | Other |
|---|---|---|
6u14Fixed  |
7Fixed |
hs14Fixed |
Description
The following test case produces wrong results (var_bad) when
running jvm with 32bit server compiler on solaris-x86.
> JDK7b43/bin/java -server -Xcomp -XX:CompileOnly=TesterSmall_Class_0 TesterSmall
var_bad = -602947331
var_ok = 0
============ TesterSmall.java ==============
class TesterSmall_Class_0 {
static long var_bad = -1L;
public TesterSmall_Class_0()
{
var_bad >>= 65;
var_bad /= 65;
}
}
public class TesterSmall {
public static void main(String[] args)
{
TesterSmall_Class_0 t = new TesterSmall_Class_0();
long var_ok = -1L;
var_ok >>= 65;
var_ok /= 65;
System.out.println("var_bad = " + TesterSmall_Class_0.var_bad);
System.out.println("var_ok = " + var_ok);
}
}
=======================================
The test works fine on other platforms with bot 32bit and 64bit jvms.
Comments
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