bug#51894: 27.2; GDB Gud support on Cygwin has trouble accessing shared files on Windows network drives.

[Eli Zaretskii]

> From: Guy Offer <guyof@checkpoint.com>
> CC: "51894@debbugs.gnu.org" <51894@debbugs.gnu.org>
> Date: Wed, 17 Nov 2021 15:01:09 +0000
> 
> Also, is Emacs capable of visiting file specified as "\cygdrive\f\source\", 
> i.e. does "C-x C-f" work with such names? Emacs can do that if I load the 
> file manually.  However, when emacs tries to open the file as received from 
> gdb (to display the source) it fails.  It only succeeds if I set the pathname 
> to \\cygdrive\f\source.  However in that case the gdb command window cannot 
> access the file. 

Please show the Emacs commands and GDB commands you use in these two
cases.  I'm not sure I understand what you mean by "load file
manually" and "open a file received from gdb"

> Pls note that this happens only if f is a network drive .

So maybe it's a Cygwin-specific problem with networked drives?  I'll
CC Ken Brown, who is our Cygwin specialist.  Ken, does this ring a
bell? does /cygdrive/x/ fail when X is a networked drive?

Or maybe the way your networked drives are mounted prevents Emacs from
accessing them due to some authentication issue?