No validation of the filename

[PKEv]

If you try to copy a file with renaming in "COM1" program hangs

[MVV]

It really hangs!
I understand that it isn't easy at all to check all these reserved names but I agree that TC should allow cancelling such operations.

[HolgerK]

Here an error message pops up:
"Error: Can't read Filename
[Skip] [Retry]
[Skip all] .."

TC 8.52a x64 W7, all COM Ports disabled.

Workaround:
Copy to NUL

Regards
Holger

[Dalai]

I can't confirm this issue. I get the same error message like Holger, and no hangs.

TC 8.52a, WinXP SP3 (COM1 is enabled and my infrared adapter is connected to it).

What happens when you copy some (existing) file to COM1 on CMD?

Code: Select all

copy c:\somefile COM1

I get an "Access denied" with that command.

Regards
Dalai

[MVV]

Dalai,
It seems that it depends on Windows configuration. I was able to reproduce it on one computer (TC progress dialog hung and Cancel button did nothing) but can't on another (I get error message immediately).

[milo1012]

First of all, those special names are reserved since ages:

Do not use the following reserved device names for the name of a file: CON, PRN, AUX, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9. Also avoid these names followed by an extension, for example, NUL.tx7.
Windows NT: CLOCK$ is also a reserved device name.

In any case, this has been discussed in the past.
See e.g. here.

It's a Windows feature that you can do special things with such named files,
so I doubt that you would be able to distinguish actual valid targets from fake ones,
which is also what Christian stated in the past

[HolgerK]

First of all, those special names are reserved since ages:

Yepp, I know.

Code: Select all

copy con: t.bat<ENTER>
echo Hello World<ENTER>
pause<CONTROL^Z><ENTER>
t<ENTER>

Works even nowadays in TC

Regards
Holger

[ghisler(Author)]

Indeed it's not a bug, just a Windows misfeature. I have personally used it to copy files to LPT1 (parallel printer).