java/6388: Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc

java/6388: Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc

[mark]

>Number:         6388
>Category:       java
>Synopsis:       Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 21 02:06:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     mark@klomp.org
>Release:        gcj 3.1
>Organization:
>Environment:

>Description:
The following program (compiled to byte or native code):

public class IT
{
    public static void main(String[] args)
    {
        System.out.println(Integer.MIN_VALUE);
        System.out.println(0x80000000);
        System.out.println(Integer.MIN_VALUE == 0x80000000);
        System.out.println(0x80000000 == 0x80000000); 
    }
}

Should produce the following output (as it does on i686):

-2147483648
-2147483648
true
true

But on powerpc it produces:

-2147483648
-2147483648
false
true
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:

Re: java/6388: Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc

[tromey]

Synopsis: Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc

State-Changed-From-To: analyzed->closed
State-Changed-By: tromey
State-Changed-When: Tue Nov  5 16:02:03 2002
State-Changed-Why:
    I've checked in the fix

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6388

Re: java/6388: Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc

[tromey]

Synopsis: Integer.MIN_VALUE == 0x80000000 optimized to false on powerpc

Responsible-Changed-From-To: unassigned->tromey
Responsible-Changed-By: tromey
Responsible-Changed-When: Wed Jun 12 10:06:04 2002
Responsible-Changed-Why:
    I'm handling this.
State-Changed-From-To: open->analyzed
State-Changed-By: tromey
State-Changed-When: Wed Jun 12 10:06:04 2002
State-Changed-Why:
    The lexer assumes that HOST_WIDE_INT is 32 bits,
    leading to problems on PPC Linux, where it is 64 bits.
    I wrote a first hacky patch, but it needs a rewrite.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6388