Re: [RFA/NEWS] Re: PR corefile/8210: Linux core files should use linux-thread-db.c

[Pedro Alves <pedro@codesourcery.com>]

On Thursday 26 August 2010 20:36:12, Eli Zaretskii wrote:

> It's okay, with two comments:
> 
> > +* GDB now displays pthread_t ids and allows inspecting TLS variables
> > +  when debugging core dumps on GNU/Linux.
> 
> Suggest to make a shorter header:
> 
>   * GDB now supports thread debugging of core dumps on GNU/Linux.
> 
> > +  When debugging a core dump generated on a machine not the one used
> > +  to run GDB, you may need to point GDB at the correct libthread_db
> 
>   When debugging a core dump generated on a machine other than the one
>   used to run GDB, you may need ...

Ah, thanks.  I was going in circles trying to make that sentence not
sound weird, and failing.

I've applied the below.

-- 
Pedro Alves

2010-08-26  Pedro Alves  <pedro@codesourcery.com>

	* NEWS: Mention libthread_db debugging with core files.

---
 gdb/NEWS |   25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

Index: src/gdb/NEWS
===================================================================
--- src.orig/gdb/NEWS	2010-08-26 20:33:43.000000000 +0100
+++ src/gdb/NEWS	2010-08-26 20:42:46.000000000 +0100
@@ -37,6 +37,31 @@
   expression.  Such a watchpoint is never deleted due to it going out
   of scope.
 
+* GDB now supports thread debugging of core dumps on GNU/Linux.
+
+  GDB now activates thread debugging using the libthread_db library
+  when debugging GNU/Linux core dumps, similarly to when debugging
+  live processes.  As a result, when debugging a core dump file, GDB
+  is now able to display pthread_t ids of threads.  For example, "info
+  threads" shows the same output as when debugging the process when it
+  was live.  In earlier releases, you'd see something like this:
+
+  (gdb) info threads
+   * 1 LWP 6780  main () at main.c:10
+
+  While now you see this:
+
+  (gdb) info threads
+   * 1 Thread 0x7f0f5712a700 (LWP 6780)  main () at main.c:10
+
+  It is also now possible to inspect TLS variables when debugging core
+  dumps.
+
+  When debugging a core dump generated on a machine other than the one
+  used to run GDB, you may need to point GDB at the correct
+  libthread_db library with the "set libthread-db-search-path"
+  command.  See the user manual for more details on this command.
+
 *** Changes in GDB 7.2
 
 * Shared library support for remote targets by default