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Before, on systems that did not support PTRACE_EVENT_CLONE, both GDB and GDBServer coordinated with libthread_db.so to insert breakpoints at magic locations in libpthread.so, in order to break at thread creation and thread death. Support for thread events was removed from GDBServer as patch: https://sourceware.org/ml/gdb-patches/2015-11/msg00466.html This patch removes support for thread events in GDB. No regressions found on Ubuntu 14.04 x86_64. gdb/ChangeLog: * breakpoint.c (remove_thread_event_breakpoints): Remove. * breakpoint.h (remove_thread_event_breakpoints): Remove declaration. * linux-nat.c (in_pid_list_p): Remove. (lin_lwp_attach_lwp): Remove. * linux-nat.h (lin_lwp_attach_lwp): Remove declaration. * linux-thread-db.c (thread_db_use_events): Remove. (struct thread_db_info) <td_create_bp_addr>: Remove. <td_death_bp_addr>: Likewise. <td_ta_event_addr_p>: Likewise. <td_ta_set_event_p>: Likewise. <td_ta_clear_event_p>: Likewise. <td_ta_event_getmsg_p>: Likewise. <td_thr_event_enable_p>: Likewise. (attach_thread): Likewise. (detach_thread): Likewise. (have_threads_callback): Likewise. (have_threads): Likewise. (enable_thread_event): Likewise. (enable_thread_event_reporting): Likewise. (try_thread_db_load_1): Remove td_ta_event_addr, td_ta_set_event, td_ta_clear_event, td_ta_event_getmsg, td_thr_event_enable initializations. (try_thread_db_load_1): Remove enable_thread_event_reporting call. (disable_thread_event_reporting): Remove. (record_thread): Adapt to thread_db_use_event removal. (detach_thread): Remove. (thread_db_detach): Adapt to thread_db_use_event removal. (check_event): Remove. (thread_db_wait): Adapt to thread events support removal. (thread_db_mourn_inferior): Likewise. (find_new_threads_callback): Likewise. (find_new_threads_once): Likewise. (thread_db_update_thread_list): Likewise.
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README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.
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