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Re: some notes on debugging screen (long) (was: cygwin-1.5.6-1 Vim now broken)


On Tue, Jan 20, 2004 at 09:59:21AM -0800, Rafael Kitover wrote:
>You will not be able to use gdb on a screen binary directly, as you
>will get a "must be connected to terminal" error, use something like:

This isn't necessary.  You should be able to:

c:\>set CYGWIN=notty
c:\>gdb screen.exe
(gdb) set env CYGWIN=tty
(gdb) run

>----
>#!/bin/sh
>echo gdb --pid=$$ --directory=/path-to-screen-source/screen-3.9.13/ \
>  --se=/path-to-unstripped-screen-binary/screen.exe
>read akey
>/path-to-unstripped-screen-binary/screen.exe
>----
>
>then run the gdb command this script prints out in another terminal
>
>You can also try using insight, the GUI version of GDB.
>
>Make sure you "set follow-fork-mode child" in gdb, or parent, depending on which part of screen you're trying to follow.

AFAIK, follow-fork mode doesn't work all that well in gdb for windows.

If you configure cygwin with --enable-debugging then you can set a
windows environment variable CYGWIN_DEBUG=screen and cygwin will pop
up a debugger whenever screen is run.

>Using symbol-file /install/bin/cygwin1.dll should let you step into the Cygwin dll. (cd to the appropriate source directory).

or use the 'dll cygwin1' command.

cgf

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