[Bug 33059] New: Visual Basic 6 shows overflow error with arithmetic expressions

http://bugs.winehq.org/show_bug.cgi?id=33059

Bug #: 33059
           Summary: Visual Basic 6 shows overflow error with arithmetic
                    expressions
           Product: Wine
           Version: 1.5.24
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified
   Regression SHA1: Visual Basic 6 shows overflow errors with arithmetic
                    expressions that has results greather than 32767

When running a program or on the immediate window, Visual Basic 6 shows an
overflow error with arithmetic expression that has results greather than 32767.

Dim a As Long
    a = 32768      <-- This doesn't cause any error
    a = 32767 + 1  <-- This one causes overflow error

The error message dialog shows:
    Run-time error '6':
    Overflow

This is not a normal behavior. Here, the arithmetic expressions are calculated
with 16 bits binary numbers with a range from -32768 to 32767, but Visual Basic
6 is a 32 bits environment with integer expressions with a range from
-4294967296 to 4294967295.

[Bug 33059] Visual Basic 6 shows overflow error with arithmetic expressions

http://bugs.winehq.org/show_bug.cgi?id=33059

[e-mail] changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

[Bug 33059] Visual Basic 6 shows overflow error with arithmetic expressions

http://bugs.winehq.org/show_bug.cgi?id=33059

Bruno Jesus  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]
    Regression SHA1|Visual Basic 6 shows        |
                   |overflow errors with        |
                   |arithmetic expressions that |
                   |has results greather than   |
                   |32767                       |

[Bug 33059] Visual Basic 6 shows overflow error with arithmetic expressions

http://bugs.winehq.org/show_bug.cgi?id=33059

--- Comment #1 from Bruno Jesus  2013-06-02 23:27:30 CDT ---
That code crashes the application in XP too. CLng and Val does not fix it,
really weird but does not seem to be a bug.

[Bug 33059] Visual Basic 6 shows overflow error with arithmetic expressions

http://bugs.winehq.org/show_bug.cgi?id=33059

Bruno Jesus  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #2 from Bruno Jesus  2013-06-02 23:32:06 CDT ---
This is really invalid. 32767 and 1 are integers, when they are summed the
operation results in an overflow. Read more at:

http://social.msdn.microsoft.com/Forums/en-US/isvvba/thread/ba933eec-7ddd-49...

This does work:

Dim a as Long
a = Clng(32767) + 1

[Bug 33059] Visual Basic 6 shows overflow error with arithmetic expressions

http://bugs.winehq.org/show_bug.cgi?id=33059

Bruno Jesus  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #3 from Bruno Jesus  2013-06-05 09:07:09 CDT ---
Closing invalid bugs.