From f0e8c4c5d1bce422ac86090b76c28931b0d240bf Mon Sep 17 00:00:00 2001 From: Jan Kratochvil Date: Thu, 22 Jan 2015 21:02:24 +0100 Subject: Print current thread after loading a core file downstream Fedora request: Please make it easier to find the backtrace of the crashing thread https://bugzilla.redhat.com/show_bug.cgi?id=1024504 Currently after loading a core file GDB prints: Core was generated by `./threadcrash1'. Program terminated with signal SIGSEGV, Segmentation fault. 8 *(volatile int *)0=0; (gdb) _ there is nowhere seen which of the threads had crashed. In reality GDB always numbers that thread as #1 and it is the current thread that time. But after dumping all the info into a file for later analysis it is no longer obvious. 'thread apply all bt' even puts the thread #1 to the _end_ of the output!!! Should GDB always print after loading a core file what "thread" command would print? [Current thread is 1 (Thread 0x7fcbe28fe700 (LWP 15453))] BTW I think it will print the thread even when loading single/non-threaded core file when other inferior(s) exist. But that currently crashes [Bug threads/12074] multi-inferior internal error https://sourceware.org/bugzilla/show_bug.cgi?id=12074 plus I think that would be a correct behavior anyway. gdb/ChangeLog 2015-01-22 Jan Kratochvil * corelow.c (core_open): Call also thread_command. * gdbthread.h (thread_command): New prototype moved from ... * thread.c (thread_command): ... here. (thread_command): Make it global. --- gdb/gdbthread.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'gdb/gdbthread.h') diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h index 15a979b..a2f378a 100644 --- a/gdb/gdbthread.h +++ b/gdb/gdbthread.h @@ -455,6 +455,8 @@ extern void finish_thread_state_cleanup (void *ptid_p); /* Commands with a prefix of `thread'. */ extern struct cmd_list_element *thread_cmd_list; +extern void thread_command (char *tidstr, int from_tty); + /* Print notices on thread events (attach, detach, etc.), set with `set print thread-events'. */ extern int print_thread_events; -- cgit v1.1