Description:
The following code has a parameter declared with the same name of a variable declared with Dim in the function.  The Dim statement resets the variable to its default initialization (e.g. double, variant).  If a second Dim statement is added to declare v again then a compiling error is produced.

Sub test(v As Double)
	Dim v As Double 
	v = 1
End Sub

I believe the correct behavior should be a compiling error that the variable is already declared in the function parameter list so that it cannot be declared with a Dim statement.  This is the same error as if two Dim statements were added to the function.

Steps to Reproduce:
1.Enter subroutine described
2.Enable watch on variable v
3.Monitor value in debug mode and note hat no error occurs

Actual Results:
The variable v is dimensioned replacing the function parameter definition

Expected Results:
A compiling error should have been produced as BASIC syntax error 'Variable is already defined'



Reproducible: Always


User Profile Reset: No



Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: BasicIDE
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes

This has been tested on Win10 LO 6.1.2 and Linux Debian LO 6.1.3.
Version: 6.1.3.1
Build ID: 1:6.1.3~rc1-2
CPU threads: 8; OS: Linux 4.9; UI render: default; VCL: gtk3; 
Locale: en-US (en_US.UTF-8); Calc: group threaded

Version: 6.1.1.2 (x64)
Build ID: 5d19a1bfa650b796764388cd8b33a5af1f5baa1b
CPU threads: 4; OS: Windows 10.0; UI render: default; 
Locale: en-US (en_US); Calc: group threaded