Problems with ".+" and ".+?" in regular expressions

[aacn]

My English is not good, please forgive me, I have to use google translate.

Local $sString = 'ABC'
For $i = 1 To 999999
	$sString &= 'xxxxxxxxxx'
Next
$sString &= 'xxxxxxxx'	;Here if you add 1 or more characters, the following expressions use .+? No match, but .+ can match
$sString &= 'DEF'

For $i = 1 To 999999
	$sString &= 'xxxxxxxxxx'
Next
$sString &= 'xxxx'	;Here if you add 1 or more characters, the following expressions use .+ No match, but .+? can match

;~ Local $aRegExp = StringRegExp($sString, 'ABC.+DEF', 1)
Local $aRegExp = StringRegExp($sString, 'ABC.+?DEF', 1)
If Not @error Then
	MsgBox(64, StringLen($aRegExp[0]), StringLen($sString) - StringLen($aRegExp[0]))
Else
	MsgBox(48, '', 'no match')
EndIf

It looks like this problem occurs when it is longer than about 10 megabytes.

[aacn]

Hi all, it seems that one description should be changed, the last 10 megabytes should be the "length".
When the front part of the string exceeds this length, or the latter part exceeds this length, it will affect the matching of .+ and .+? respectively.