Incidentally, I neglected to say that I now have a work-around.
T'is most odious!
I preload the *.[ch] from my cwd and copy them into shadow
buffers with the <2> name and the mythical c:/cygdrive file
name and (not-modified). I will put this on a gdb-hook.
I don't think I can live with this long-term but at least I am now
debugging on Windows in other than Visual Studio.
On 19 March, 2003, I posted a note:
Emacs M-x gdb does not correlate CYGWIN symlinks to source files
to cygwin@cygwin.com.
The suggestion was, "use CYGWIN Emacs". (I tried it but stayed with Gnu.)
I just tried this once more, but in a very simple environment (no symbolic links of any kind).
When a break triggers in "test.c", Emacs opens a buffer, "test.c<2>" on mythical file
"c:/cygwin/c/...test.c". It appears that Emacs helpfully added the missing drive letter.
I suggest that if Emacs did not add the drive letter when the /cygdrive notation is present
(on a system with CYGWIN installed), then Gnu Emacs, CYGWIN and gdb would all play
together straight out of the box.
(Of course, I could just be doing something horribly wrong, since I cannot imagine that I
am the first to tread this path and, no, I can't really believe this doesn't work.)
Cheers,
Keith