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