Created attachment 149023 [details]
document to be used in STR

reproducible, assignment b=a changes vartype to String

I did some tests on Excel VBA. And I was so surprised at how I was misunderstanding Excel VBA. (please note that the post to LibreOffice Dev ML has been done before these tests. Also note that VB.NET MAY WORK IN DIFFERENT WAY)

’---Excel VBA---
Option Explicit

Sub Main()
Dim a(1) As Integer
Dim b() As Integer
b = a
End Sub
’----------------
=> No Error

’---Excel VBA---
Sub Main()
Dim a(1) As Integer
Dim b(1) As Integer
b = a
End Sub
’----------------
=> Error

’---Excel VBA---
Sub Main()
Dim a() As Integer
Dim b() As Integer
b = a
End Sub
’----------------
=> No Error

’---Excel VBA---
Sub Main()
Dim a() As Integer
Dim b As Variant
b = a
End Sub
’------------------
=> No Error

’---Excel VBA---
Sub Main()
Dim a() As Integer
Hoge (a)
End Sub

Function Hoge(x() As Integer) As String
    Hoge = "abc"
End Function
’------------------
=> Error

’---Excel VBA---
Sub Main()
Dim a() As Integer
Hoge (a)
End Sub

Function Hoge(x As Variant) As String
    Hoge = "abc"
End Function
’------------------
=> No Error

’---Excel VBA---
Sub Main()
Dim a() As Integer
Dim b As Integer
Dim c As Variant
c = a
c = b
End Sub
’------------------
=> No Error

’---Excel VBA---
Sub Main()
    Dim a() As Integer
    Hoge (a)
End Sub

Function Hoge(x As Variant) As String
    Dim b() As Integer
    b = x
    Hoge = "abc"
End Function
’------------------
=> No Error

’---Excel VBA---
Sub Main()
    Dim a() As Integer
    Hoge (a)
End Sub

Function Hoge(x As Variant) As String
    Dim b() As String
    b = x
    Hoge = "abc"
End Function
’------------------
=> Error

Function parameter's one was compile error

typo:
>Function parameter's one was compile error
Error in 'Function Hoge(x() As Integer) As String' case was a compile error

Sub hoge()
    Dim a(2) As Integer
    Dim b() As Integer
    a(0) = 1
    a(1) = 2
    b = a
    a(0) = 3
    MsgBox (b(0))
End Sub
-------------
StarBasic => 3
Excel VBA => 1

FYI:
'-----StarBasic-----
Sub Main()
Dim a(1) As Integer
Dim b() As Integer
a(0) = 1
a(1) = 2
b = a
Redim Preserve b(2) As Integer
a(0) = 5
Msgbox(b(0)) 
End Sub
'-----------------------
=>1

Dear himajin100000,

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2. Test your bug
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