[Tcl-bugs] [ tcl-Bugs-868489 ] Incorrect promotion of int to wide

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Bugs item #868489, was opened at 2003-12-31 11:09
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Category: 44. Parsing and Eval
Group: current: 8.4.5
Status: Open
Resolution: None
Priority: 5
Submitted By: Kevin B KENNY (kennykb)
Assigned to: miguel sofer (msofer)
Summary: Incorrect promotion of int to wide

Initial Comment:
Consider the following:

set x -2366755200
string is integer $x
set y [expr { wide($x) }]

The value of y that results is 1928212096

The problem is that the generated code for
the expression sees the "integer" internal
representation and uses it, even though
reconverting the string rep would yield a
different value.  The particular code in
question is in the "ExprCallMathFunc"
function in tclExecute.c, but the problem
appears to be pretty pervasive.

It appears to be incorrect to promote an
"integer" to a "wide" if the "integer" has a
string representation.

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