Opened 11 years ago

Last modified 10 days ago

#2279 assigned Bug

For loop not working as expected

Reported by: BrewManNH Owned by: Jon
Milestone: Component: AutoIt
Version: Severity: None
Keywords: Cc:


Here's some code I came across that isn't working as it should, at least isn't working as I think it should work.

Global $Array[5] = ["AA", "BB", "CC", "DD", "EE"]
For $I = -1 To $Array
    ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $I = ' & $I & @crlf & '>Error code: ' & @error & @crlf) ;### Debug Console
Global $Array[5][2] = [["AA", "1"], ["BB", 2], ["CC", 3], ["DD", 4],["EE", 5]]
For $I = 10 To $Array
    ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $I = ' & $I & @crlf & '>Error code: ' & @error & @crlf) ;### Debug Console

The output from the code above, when run from SciTE, is this.

@@ Debug(7) : $I = -1
Error code: 0
@@ Debug(7) : $I = BB
Error code: 0
@@ Debug(7) : $I = CC
Error code: 0
@@ Debug(7) : $I = DD
Error code: 0
@@ Debug(7) : $I = EE
Error code: 0
@@ Debug(11) : $I = 10
Error code: 0
@@ Debug(11) : $I = 10
Error code: 0
@@ Debug(11) : $I = 10
Error code: 0
@@ Debug(11) : $I = 10
Error code: 0
@@ Debug(11) : $I = 10

The first value of $I is correct, it starts at whatever the For loop starts at, but then the For/Next loop starts acting like a For/In/Next loop. On a 2D array, the second section of code, it just loops for however many elements there are in the array, and the initial value of $I doesn't change.

I would have expected this to either error out, because it's referencing an array instead of a number, or run once because there's no end number to reach.

I have tested this code on,, and and they all run the same way.

I don't think this should be working the way it is and appears to be a bug.

Attachments (0)

Change History (6)

comment:1 Changed 11 years ago by trancexx

Yes, it's a bug. The code isn't performing necessary type conversion. The fix is trivial.
Thanks for reporting.

comment:2 Changed 11 years ago by Jon

  • Resolution set to Rejected
  • Status changed from new to closed

comment:3 Changed 10 years ago by Jpm

I think the script must error as $array as no valid type conversion

comment:4 Changed 21 months ago by Jpm

  • Resolution Rejected deleted
  • Status changed from closed to reopened

comment:5 Changed 21 months ago by Jpm

  • Owner set to Jpm
  • Status changed from reopened to assigned

For invalid parameter (cannot be incremented) will produce a Fatal error
Even similar expression such $var = $array + 1 will produce a Fatal error.

Fix sent to Jon

comment:6 Changed 10 days ago by Jpm

  • Owner changed from Jpm to Jon

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