Date: Sat, 06 Jan 2001 11:15:36 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: djgpp-workers AT delorie DOT com
Message-Id: <9003-Sat06Jan2001111535+0200-eliz@is.elta.co.il>
X-Mailer: Emacs 20.6 (via feedmail 8.3.emacs20_6 I) and Blat ver 1.8.6
Subject: Backslashes in debug info
Reply-To: djgpp-workers AT delorie DOT com

I think I've found a bug in GCC: it doesn't support backslashes in
file names when generating debug info.

To reproduce, compile any program like this:

   gcc -gstabs+ d:\foo\bar\baz\foo.c -o foo

and then look at the debug info with objdump:

   objdump -g foo | less

You will see that all the "file" entries are written thusly:

   d:/foo/bar/baz/d:\foo\bar\baz\foo.c

This isn't specific to stabs, -gcoff does similar things, except that
there are only 14 characters for the file name there, so the above
long name is truncated.

I tried this with GCC 2.95.2 and two versions of ld.exe: 2.10 and
2.9.1.  The linker version didn't have any effect on this, so I think
the problem is in GCC.  GCC 2.7.2.1 doesn't have this problem (tested
with COFF debugging only, since 2.7.2.1 didn't support stabs).

I think this is a serious problem: at least with COFF debugging, it
prevents GDB from displaying the source.