From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13306 invoked by alias); 9 Sep 2008 14:57:40 -0000 Received: (qmail 13296 invoked by uid 22791); 9 Sep 2008 14:57:38 -0000 X-Spam-Check-By: sourceware.org Received: from mail.oarcorp.com (HELO OARmail.OARCORP.com) (216.186.189.5) by sourceware.org (qpsmtpd/0.31) with ESMTP; Tue, 09 Sep 2008 14:56:59 +0000 Received: from [192.168.1.3] (192.168.1.3) by OARmail.OARCORP.com (192.168.2.2) with Microsoft SMTP Server (TLS) id 8.1.291.1; Tue, 9 Sep 2008 09:43:59 -0500 Message-ID: <48C68C26.3030305@oarcorp.com> Date: Tue, 09 Sep 2008 14:57:00 -0000 From: Joel Sherrill User-Agent: Thunderbird 2.0.0.16 (X11/20080723) MIME-Version: 1.0 To: Subject: core dump when watchpoint set Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2008-09/txt/msg00053.txt.bz2 Hi, I wondered if this looked familiar and was fixed in CVS. I am using gdb 6.8 targeting powerpc and running the application using psim. When I set a watchpoint and then run, gdb core dumps. If this isn't a known issue, can someone point me in the direction of what to look at so I can fix it? (gdb) watch _Thread_Executing Watchpoint 5: _Thread_Executing (gdb) info watchpoints Num Type Disp Enb Address What 1 breakpoint keep y 0x000091bc in _Internal_error_Occurred at ../../../../../../current/c/src/../../cpukit/score/src/interr.c:53 2 breakpoint keep y 0x0000856c in rtems_fatal_error_occurred at ../../../../../../current/c/src/../../cpukit/sapi/src/fatal.c:38 3 breakpoint keep y 0x0000d9dc in __assert at ../../../../../../current/c/src/../../cpukit/libcsupport/src/__assert.c:48 4 breakpoint keep y 0x00001fdc in C_exception_handler at ../../../../../../../current/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors_init.c:119 5 watchpoint keep y _Thread_Executing (gdb) r Starting program: /home/joel/rtems-4.9-work/build/test/minimum.ralf Program received signal SIGSEGV, Segmentation fault. value_type (value=0x0) at ../../gdb-6.8/gdb/value.c:269 269 { Missing separate debuginfos, use: debuginfo-install expat.i386 glibc.i686 ncurses.i386 readline.i386 (gdb) bt #0 value_type (value=0x0) at ../../gdb-6.8/gdb/value.c:269 #1 0x080ca752 in coerce_array (arg=0x0) at ../../gdb-6.8/gdb/value.c:1677 #2 0x080d6cf7 in value_equal (arg1=0x0, arg2=0xa23ecc8) at ../../gdb-6.8/gdb/valarith.c:1603 #3 0x080bdf7e in watchpoint_check (p=0xa1e3568) at ../../gdb-6.8/gdb/breakpoint.c:2578 #4 0x080fd9e3 in catch_errors (func=0x80bde40 , func_args=0xa1e3568, errstring=0xa23eb20 "Error evaluating expression for watchpoint 5\n", mask=6) at ../../gdb-6.8/gdb/exceptions.c:513 #5 0x080bf262 in bpstat_stop_status (bp_addr=376, ptid={pid = 42, lwp = 0, tid = 0}) at ../../gdb-6.8/gdb/breakpoint.c:2790 #6 0x080f3cb9 in handle_inferior_event (ecs=0xbf8436b4) at ../../gdb-6.8/gdb/infrun.c:1980 #7 0x080f5de7 in wait_for_inferior (treat_exec_as_sigtrap=0) at ../../gdb-6.8/gdb/infrun.c:1042 #8 0x080f5fb4 in proceed (addr=4294967295, siggnal=TARGET_SIGNAL_0, step=0) at ../../gdb-6.8/gdb/infrun.c:844 #9 0x080f1113 in run_command_1 (args=0x0, from_tty=1, tbreak_at_main=) at ../../gdb-6.8/gdb/infcmd.c:563 #10 0x08053555 in execute_command (p=0xa0d90e1 "", from_tty=1) at ../../gdb-6.8/gdb/top.c:449 #11 0x08100eaf in command_handler (command=0xa0d90e0 "") at ../../gdb-6.8/gdb/event-top.c:518 #12 0x08101b47 in command_line_handler (rl=0xa1b8c10 "") at ../../gdb-6.8/gdb/event-top.c:804 #13 0x005e5892 in rl_callback_read_char () from /lib/libreadline.so.5 #14 0x0810103b in rl_callback_read_char_wrapper (client_data=0x0) at ../../gdb-6.8/gdb/event-top.c:177 #15 0x08100a97 in handle_file_event (event_file_desc=0) at ../../gdb-6.8/gdb/event-loop.c:728 #16 0x080fff59 in process_event () at ../../gdb-6.8/gdb/event-loop.c:341 #17 0x08100728 in gdb_do_one_event (data=0x0) at ../../gdb-6.8/gdb/event-loop.c:378 #18 0x080fd9e3 in catch_errors (func=0x8100610 , func_args=0x0, errstring=0x83590e8 "", mask=6) at ../../gdb-6.8/gdb/exceptions.c:513 #19 0x080a9e2a in tui_command_loop (data=0x0) at ../../gdb-6.8/gdb/tui/tui-interp.c:153 #20 0x080fdfaf in current_interp_command_loop () at ../../gdb-6.8/gdb/interps.c:276 #21 0x0804c32b in captured_command_loop (data=0x0) at ../../gdb-6.8/gdb/main.c:99 #22 0x080fd9e3 in catch_errors (func=0x804c320 , func_args=0x0, errstring=0x83590e8 "", mask=6) at ../../gdb-6.8/gdb/exceptions.c:513 #23 0x0804cb55 in captured_main (data=0xbf843c04) at ../../gdb-6.8/gdb/main.c:882 #24 0x080fd9e3 in catch_errors (func=0x804c360 , func_args=0xbf843c04, errstring=0x83590e8 "", mask=6) at ../../gdb-6.8/gdb/exceptions.c:513 #25 0x0804c311 in gdb_main (args=0xbf843c04) at ../../gdb-6.8/gdb/main.c:891 #26 0x0804c2d5 in main (argc=Cannot access memory at address 0x1 ) at ../../gdb-6.8/gdb/gdb.c:33 -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherrill@OARcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (256) 722-9985