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Diffstat (limited to 'open_issues/gdb.mdwn')
-rw-r--r-- | open_issues/gdb.mdwn | 586 |
1 files changed, 3 insertions, 583 deletions
diff --git a/open_issues/gdb.mdwn b/open_issues/gdb.mdwn index 07b3da45..9d82d728 100644 --- a/open_issues/gdb.mdwn +++ b/open_issues/gdb.mdwn @@ -1,5 +1,5 @@ -[[!meta copyright="Copyright © 2007, 2008, 2010, 2011, 2012, 2013 Free Software -Foundation, Inc."]] +[[!meta copyright="Copyright © 2007, 2008, 2010, 2011, 2012, 2013, 2014 Free +Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this @@ -9,584 +9,4 @@ Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] -[[!tag open_issue_gdb]] - -Here's what's to be done for maintaining GNU GDB. - -[[!toc levels=2]] - - -# [[General information|/gdb]] - - -# [[Sources|source_repositories/gdb]] - - -# Configuration - -<!-- - -git checkout reviewed -git diff --patience --stat=$COLUMNS,$COLUMNS --patch --src-prefix=./ --dst-prefix=./ --find-renames --ignore-space-change ..sourceware/master | awk '/^diff/ { c = " " $0; } /^@@/ { print c; } { print; }' | less --i -/^---.*/([^.]*|.*\.texi.*|[^/]*gnu[^/]*)$|hurd|linux|nacl|nptl|glibc|gs: - ---> - -Last reviewed up to the [[Git mirror's d19fd090b7ec0a60846c52cad9fc0c24c3729565 -(2013-09-18) sources|source_repositories/gdb]]. - - * Globally - - * a.out, COFF, PE image support and 64 bit support are not interesting. - - * In the testsuites, `.exp` and `.d` files very likely should not only - care for `*-*-linux*`, but also `*-*-gnu*`. (If the need to be - conditionalized like this at all.) - - * `bfd/` - - See [[binutils]]. - - * `libdecnumber/` - - Should/can probably align to GNU/Linux. - - * Have a look at config/i386/i386gnu.mh. - - * configure.tgt - - * glibc-tdep et al. also for GNU/Hurd? - - * [[gdbserver]] - - * 82763a3d329b0d342d0273941b1521be9ef0c604 »MODIFIED is unknown, pass it as - true.« - - * Configure so that Debian system's `/usr/lib/debug/[...]` will be loaded - automatically. - - * old-style function definition - - ../../Ferry_Tagscherer/gdb/gnu-nat.c: In function 'trace_me': - ../../Ferry_Tagscherer/gdb/gnu-nat.c:2106:8: warning: old-style function definition [-Wold-style-definition] - void trace_me () - ^ - - -# Build - -Here's a log of a GDB build run; this is from our [[Git -repository|source_repositories/gdb]]'s `tschwinge/Ferry_Tagscherer` branch, -commit d19fd090b7ec0a60846c52cad9fc0c24c3729565 (2013-09-18), run on -kepler.SCHWINGE and coulomb.SCHWINGE. - - $ export LC_ALL=C - $ ../Ferry_Tagscherer/configure --prefix="$PWD".install SHELL=/bin/dash CC=gcc-4.8 CXX=g++-4.8 --disable-werror 2>&1 | tee log_build - [...] - $ make 2>&1 | tee log_build_ - [...] - -Different hosts may default to different shells and compiler versions; thus -harmonized. - -There are several occurences of *error: dereferencing type-punned pointer will -break strict-aliasing rules* in the MIG-generated stub files; thus no `-Werror` -until that is resolved ([[strict_aliasing]]). - -This takes up around 230 MiB and needs roughly 8 min on kepler.SCHWINGE and 31 -min on coulomb.SCHWINGE. - -<!-- - - $ (make && touch .go-install) 2>&1 | tee log_build_ && test -f .go-install && (make install && touch .go-test) 2>&1 | tee log_install && test -f .go-test && make -k check 2>&1 | tee log_test - ---> - - -## Analysis - -x86 GNU/Linux' and GNU/Hurd's configurations are slightly different, thus mask -out most of the differences that are due to GNU/Linux supporting more core file -formats and more emulation vectors. - - $ toolchain/logs/process gdb build - - * Why do we specify `-D_GNU_SOURCE`, and GNU/Linux doesn't? - - * GNU/Linux: `gdb/symfile-mem.c` for [[vDSO]]. - - * GNU/Linux: `gdb/i386-nat.c` for hardware breakpoints, etc. -- we should - probably use that, too. Related to Samuel's Hurd GDB patch? - - * `gdb/gnu-nat.c` - - gnu-nat.c: In function 'proc_set_exception_port': - gnu-nat.c:409:3: warning: format '%d' expects argument of type 'int', but argument 8 has type 'mach_port_t' [-Wformat] - gnu-nat.c: In function 'proc_steal_exc_port': - gnu-nat.c:449:7: warning: format '%d' expects argument of type 'int', but argument 8 has type 'mach_port_t' [-Wformat] - gnu-nat.c:470:7: warning: format '%d' expects argument of type 'int', but argument 8 has type 'mach_port_t' [-Wformat] - gnu-nat.c: In function 'make_proc': - gnu-nat.c:583:7: warning: format '%d' expects argument of type 'int', but argument 2 has type 'mach_port_t' [-Wformat] - gnu-nat.c:586:7: warning: format '%d' expects argument of type 'int', but argument 8 has type 'mach_port_t' [-Wformat] - gnu-nat.c: In function 'inf_set_pid': - gnu-nat.c:761:3: warning: format '%d' expects argument of type 'int', but argument 7 has type 'task_t' [-Wformat] - gnu-nat.c: In function 'inf_validate_procs': - gnu-nat.c:1085:6: warning: format '%d' expects argument of type 'int', but argument 8 has type 'thread_t' [-Wformat] - gnu-nat.c: In function 'inf_signal': - gnu-nat.c:1349:4: warning: format '%d' expects argument of type 'int', but argument 7 has type 'thread_t' [-Wformat] - gnu-nat.c:1349:4: warning: format '%d' expects argument of type 'int', but argument 8 has type 'thread_t' [-Wformat] - gnu-nat.c: In function 'S_exception_raise_request': - gnu-nat.c:1668:3: warning: format '%d' expects argument of type 'int', but argument 7 has type 'thread_t' [-Wformat] - gnu-nat.c:1668:3: warning: format '%d' expects argument of type 'int', but argument 8 has type 'task_t' [-Wformat] - gnu-nat.c:1705:8: warning: format '%d' expects argument of type 'int', but argument 7 has type 'mach_port_t' [-Wformat] - gnu-nat.c:1711:8: warning: format '%d' expects argument of type 'int', but argument 7 has type 'mach_port_t' [-Wformat] - gnu-nat.c: In function 'do_mach_notify_dead_name': - gnu-nat.c:1762:3: warning: format '%d' expects argument of type 'int', but argument 7 has type 'mach_port_t' [-Wformat] - gnu-nat.c: In function 'gnu_write_inferior': - gnu-nat.c:2383:8: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'vm_address_t' [-Wformat] - gnu-nat.c:2393:8: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'vm_address_t' [-Wformat] - gnu-nat.c: In function 'steal_exc_port': - gnu-nat.c:2864:5: warning: format '%d' expects argument of type 'int', but argument 2 has type 'mach_port_t' [-Wformat] - - - * fe19822761b4635f392875a186e48af446b40f41..7a63e9515491f21eaf07301df87d389def20e317: - - `-Wmissing-prototypes` - - gnu-nat.c: At top level: - gnu-nat.c:643:1: warning: no previous prototype for 'make_inf' [] - gnu-nat.c: At top level: - gnu-nat.c:879:1: warning: no previous prototype for 'inf_set_traced' [] - gnu-nat.c:980:1: warning: no previous prototype for 'inf_port_to_thread' [] - gnu-nat.c: At top level: - gnu-nat.c:1748:1: warning: no previous prototype for 'inf_task_died_status' [] - gnu-nat.c: At top level: - gnu-nat.c:2273:1: warning: no previous prototype for 'gnu_read_inferior' [] - gnu-nat.c:2319:1: warning: no previous prototype for 'gnu_write_inferior' [] - gnu-nat.c: At top level: - gnu-nat.c:3415:1: warning: no previous prototype for '_initialize_gnu_nat' [] - notify_S.c:305:24: warning: no previous prototype for 'notify_server' [] - notify_S.c:341:28: warning: no previous prototype for 'notify_server_routine' [] - process_reply_S.c:343:24: warning: no previous prototype for 'process_reply_server' [] - process_reply_S.c:379:28: warning: no previous prototype for 'process_reply_server_routine' [] - msg_reply_S.c:165:24: warning: no previous prototype for 'msg_reply_server' [] - msg_reply_S.c:201:28: warning: no previous prototype for 'msg_reply_server_routine' [] - exc_request_S.c:157:24: warning: no previous prototype for 'exc_server' [] - exc_request_S.c:193:28: warning: no previous prototype for 'exc_server_routine' [] - - * `O_NOFOLLOW` - - First seen in - 20f498edfd7e57d3297febcf9c7c7d667cc74239..69a5e2b022c7d15ec4c7c49e6f53a8d924d3b72b: - - -checking for working fcntl.h... yes - +checking for working fcntl.h... no (bad O_NOFOLLOW) - - [[!taglink open_issue_glibc]]? - - * 00e1c4298d2b6fe040a9a970e98349602b12ddbf..6b25dae901ddedb3f330803542d3eac73cdcae4b: - - +../../Ferry_Tagscherer/gdb/gnu-nat.c: In function 'info_port_rights': - +../../Ferry_Tagscherer/gdb/gnu-nat.c:3058:11: warning: passing argument 1 of 'parse_to_comma_and_eval' from incompatible pointer type [enabled by default] - +In file included from ../../Ferry_Tagscherer/gdb/breakpoint.h:23:0, - + from ../../Ferry_Tagscherer/gdb/inferior.h:37, - + from ../../Ferry_Tagscherer/gdb/gnu-nat.c:56: - +../../Ferry_Tagscherer/gdb/value.h:729:22: note: expected 'const char **' but argument is of type 'char **' - - -# Install - - $ make install 2>&1 | tee log_install - [...] - -This takes up around 50 MiB, and needs roughly 1 min on kepler.SCHWINGE and 3 -min on coulomb.SCHWINGE. - - -## Analysis - - $ toolchain/logs/process gdb install - - * `libtool: finish`: `ldconfig` is not run for the Hurd. - - -# Testsuite - - $ make -k check 2>&1 | tee log_test - [...] - -This needs roughly 15 min on kepler.SCHWINGE and 72 min on coulomb.SCHWINGE. - -When running `make -k check 2>&1 | tee log_test`, at the end of the testsuite -the `tee` process does not terminate if there are still stray leftover -processes that [have their stdout/stderr -open](http://sourceware.org/ml/gdb-patches/2012-10/msg00489.html). `kill`ing -these (`SIGKILL` may be needed), makes the `tee` process terminate, too. On -GNU/Hurd, these generally are `gdb.multi/watchpoint-multi`, and an unknown -(`?`) one ("57 PIDs before" `expect [...] gdb.cp`). - - -## Analysis - -The testsuite uses the system's default `gcc` (and similar) compilers, not -those specified on the `configure` line ([[!taglink open_issue_gdb]]?), see -`find_gcc` (and similar) usage in the testsuite and DejaGnu. Maybe something -like `gdb/testsuite/boards/cc-with-tweaks.exp` would help, or setting -`CC_FOR_TARGET` (and similar) per `gdb/testsuite/lib/future.exp`? - - $ toolchain/logs/process gdb test - - * `gdb.base/attach-pie-misread.exp` - - Is only run for GNU/Linux; needs [[prelink]]. - - * Disabled - - * `gdb.base/readline.exp` - - [[term_blocking]] issue. - - * `gdb.base/sigall.exp` - - From `send signal TSTP` on, all FAIL running into timeouts. - - * `gdb.python/py-inferior.exp` (mostly disabled) - - Running ../../../Ferry_Tagscherer/gdb/testsuite/gdb.python/py-inferior.exp ... - [...] - python print 'result =', i0.was_attached - result = False - (gdb) PASS: gdb.python/py-inferior.exp: test Inferior.was_attached - python print i0.threads () - (<gdb.InferiorThread object at 0x61170>, <gdb.InferiorThread object at 0x61160>) - (gdb) FAIL: gdb.python/py-inferior.exp: test Inferior.threads - break check_threads - Breakpoint 2 at 0x8048869: file ../../../Ferry_Tagscherer/gdb/testsuite/gdb.python/py-inferior.c, line 61. - (gdb) continue - Continuing. - [New Thread 25670.6] - [New Thread 25670.7] - [New Thread 25670.8] - [New Thread 25670.9] - [New Thread 25670.10] - [New Thread 25670.11] - [New Thread 25670.12] - [New Thread 25670.13] - - Breakpoint 2, check_threads (barrier=0x15ff144) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.python/py-inferior.c:61 - 61 pthread_barrier_wait (barrier); - (gdb) PASS: gdb.python/py-inferior.exp: continue to breakpoint: cont to check_threads - python print len (i0.threads ()) - 10 - (gdb) FAIL: gdb.python/py-inferior.exp: test Inferior.threads 2 - break 28 - Breakpoint 3 at 0x80487c2: file ../../../Ferry_Tagscherer/gdb/testsuite/gdb.python/py-inferior.c, line 28. - (gdb) continue - Continuing. - FAIL: gdb.python/py-inferior.exp: continue to breakpoint: cont to Break here. (timeout) - python addr = gdb.selected_frame ().read_var ('str') - FAIL: gdb.python/py-inferior.exp: read str address (timeout) - [All following tests FAIL with timeout.] - FAIL: gdb.python/py-inferior.exp: Switch to first inferior (timeout) - remove-inferiors 3 - FAIL: gdb.python/py-inferior.exp: Remove second inferior (timeout) - - At this point, the system hangs; no new processes can be spawned, so - perhaps an issue with the exec server. - - * `gdb.threads/manythreads.exp` - - [[!taglink open_issue_libpthread]]. Perhaps fails due to pthread - attributes usage? Doesn't execute properly: - - $ gdb/testsuite/gdb.threads/manythreads - manythreads: ../libpthread/sysdeps/mach/pt-thread-halt.c:51: __pthread_thread_halt: Unexpected error: (ipc/rcv) invalid name. - Killed - - * Linux syscall usage, `<asm/unistd.h>` - - * `UNSUPPORTED: gdb.threads/ia64-sigill.exp: Couldn't compile ../../../master/gdb/testsuite/gdb.threads/ia64-sigill.c: unrecognized error` - - * `UNSUPPORTED: gdb.threads/siginfo-threads.exp: Couldn't compile ../../../Ferry_Tagscherer/gdb/testsuite/gdb.threads/siginfo-threads.c: unrecognized error` - - * `gdb.threads/sigstep-threads.c` - - Also uses `tgkill`. - - * `UNSUPPORTED: gdb.threads/watchpoint-fork.exp: parent: multithreaded: Couldn't compile ../../../Ferry_Tagscherer/gdb/testsuite/gdb.threads/watchpoint-fork-mt.c ../../../Ferry_Tagscherer/gdb/testsuite/gdb.threads/watchpoint-fork-parent.c: unrecognized error` - - * `UNSUPPORTED: gdb.threads/multi-create.exp: Couldn't compile ../../../master/gdb/testsuite/gdb.threads/multi-create.c: unrecognized error` - ../../../master/gdb/testsuite/gdb.threads/multi-create.c: In function 'create_function': - ../../../master/gdb/testsuite/gdb.threads/multi-create.c:46:39: error: 'PTHREAD_STACK_MIN' undeclared (first use in this function) - ../../../master/gdb/testsuite/gdb.threads/multi-create.c:46:39: note: each undeclared identifier is reported only once for each function it appears in - ../../../master/gdb/testsuite/gdb.threads/multi-create.c: In function 'main': - ../../../master/gdb/testsuite/gdb.threads/multi-create.c:73:39: error: 'PTHREAD_STACK_MIN' undeclared (first use in this function) - - * `UNSUPPORTED: gdb.threads/staticthreads.exp: Couldn't compile ../../../master/gdb/testsuite/gdb.threads/staticthreads.c: unrecognized error` - - ../../../master/gdb/testsuite/gdb.threads/staticthreads.c: In function 'main': - ../../../master/gdb/testsuite/gdb.threads/staticthreads.c:52:37: error: 'PTHREAD_STACK_MIN' undeclared (first use in this function) - ../../../master/gdb/testsuite/gdb.threads/staticthreads.c:52:37: note: each undeclared identifier is reported only once for each function it appears in - - * `UNSUPPORTED: gdb.threads/create-fail.exp: Couldn't compile ../../../Ferry_Tagscherer/gdb/testsuite/gdb.threads/create-fail.c: unrecognized error` - - [...]/gdb.threads/create-fail.c:77: undefined reference to `pthread_attr_setaffinity_np' - [...]/gdb.threads/create-fail.c:83: undefined reference to `pthread_create' - - * `UNTESTED: gdb.base/longest-types.exp: longest-types.exp` - - ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/longest-types.c:20:8: error: size of array 'buf' is too large - - Also on GNU/Linux. - - * `FAIL: gdb.base/jit.exp: PIE: one_jit_test-1: Can't run to main` - - (gdb) break main - Breakpoint 1 at 0xb84: file ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/jit-main.c, line 128. - (gdb) run - Starting program: /media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/testsuite/gdb.base/jit-main - Cannot access memory at address 0x393 - Cannot access memory at address 0x38f - (gdb) FAIL: gdb.base/jit.exp: PIE: one_jit_test-1: Can't run to main - - [[GCC/PIE]]. - - Is the following supposed to terminate in this way? - - (gdb) break main - Breakpoint 1 at 0x675: file ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/attach-pie-noexec.c, line 23. - (gdb) run - Starting program: /media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/testsuite/gdb.base/attach-pie-noexec - Cannot access memory at address 0x6c626172 - Cannot access memory at address 0x6c62616e - (gdb) testcase ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/attach-pie-noexec.exp completed in 3 seconds - - IRC, freenode, #hurd, 2013-09-06: - - <gnu_srs1> How to debug a program that works in the shell but Cannot - access memory at address ... in gdb? - <tschwinge> Build it without -pie -- but that is just a guess of what - might be going on. - * tschwinge clearly has spent enough time with obscure things to be - able to make such guesses. - <gnu_srs1> tschwinge: looks like -fPIE is used. - <gnu_srs1> verified: some (all?) executables compiled with -fPIE, -fpie - and linked with -pie cannot be debugged in gdb :( - - * `solib-event stop` - - Running ../../../Ferry_Tagscherer/gdb/testsuite/gdb.mi/mi-catch-load.exp ... - PASS: gdb.mi/mi-catch-load.exp: breakpoint at main - PASS: gdb.mi/mi-catch-load.exp: mi runto main - PASS: gdb.mi/mi-catch-load.exp: catch-load: auto-solib-add on - PASS: gdb.mi/mi-catch-load.exp: catch-load: catch load - FAIL: gdb.mi/mi-catch-load.exp: catch-load: solib-event stop - PASS: gdb.mi/mi-catch-load.exp: breakpoint at main - PASS: gdb.mi/mi-catch-load.exp: mi runto main - PASS: gdb.mi/mi-catch-load.exp: catch-unload: auto-solib-add on - PASS: gdb.mi/mi-catch-load.exp: catch-unload: catch unload - FAIL: gdb.mi/mi-catch-load.exp: catch-unload: solib-event stop - - *stopped,reason="signal-received",signal-name="SIGSEGV",signal-meaning="Segmentation fault",frame={addr="0x00014add",func="??",args=[],from="/lib/ld.so"},thread-id="4",stopped-threads="all" - - * `gdb.base/call-signal-resume.exp` - - $ gdb -q gdb/testsuite/gdb.base/call-signals - (gdb) break stop_one - (gdb) r - (gdb) call gen_signal() - (gdb) bt - (gdb) frame [<function called from gdb>] - (gdb) return - (gdb) break handle_signal - (gdb) c - (gdb) c - - kepler.SCHWINGE: - - Breakpoint 2, handle_signal (sig=6) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:28 - 28 } - (gdb) bt - #0 handle_signal (sig=6) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:28 - #1 <signal handler called> - #2 0xb7fde416 in __kernel_vsyscall () - #3 0xb7dffd96 in kill () at ../sysdeps/unix/syscall-template.S:81 - #4 0x0804859c in gen_signal () at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:35 - #5 0x08048610 in main () at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:81 - - coulomb.SCHWINGE: - - Breakpoint 2, handle_signal (sig=6) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:28 - 28 } - (gdb) bt - #0 handle_signal (sig=6) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:28 - #1 0x010baac2 in trampoline () from /lib/i386-gnu/libc.so.0.3 - #2 0x00000006 in ?? () - #3 0x00000000 in ?? () - - kepler.SCHWINGE: - - (gdb) c - Continuing. - no signal - [Inferior 1 (process 10401) exited normally] - - coulomb.SCHWINGE: - - (gdb) c - Continuing. - no signal - - Program received signal SIGSEGV, Segmentation fault. - 0x00000000 in ?? () - (gdb) bt - #0 0x00000000 in ?? () - #1 0x01116c28 in _IO_acquire_lock_fct (p=<synthetic pointer>) at libioP.h:905 - #2 _IO_puts (str=0x80487e0 "no signal") at ioputs.c:45 - #3 0x080486d8 in gen_signal () at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:38 - #4 0x0804873d in main () at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/call-signals.c:81 - - This is apparently new with the glibc 2.17 upgrade. If not doing the - manual `gen_signal` call, it works fine. TODO. - - * `gdb.base/relativedebug.exp` - - (gdb) PASS: gdb.base/relativedebug.exp: continue - bt - #0 0x010a1afc in ?? () from /lib/i386-gnu/libc.so.0.3 - #1 0x010a23be in mach_msg () from /lib/i386-gnu/libc.so.0.3 - #2 0x0126cd98 in msg_sig_post () from /lib/i386-gnu/libhurduser.so.0.3 - #3 0x010e2141 in ?? () from /lib/i386-gnu/libc.so.0.3 - #4 0x010e23ed in kill () from /lib/i386-gnu/libc.so.0.3 - #5 0x010e17f4 in raise () from /lib/i386-gnu/libc.so.0.3 - #6 0x010e5b7c in abort () from /lib/i386-gnu/libc.so.0.3 - #7 0x08048607 in handler (signo=14) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/relativedebug.c:25 - #8 0x010bdac2 in ?? () from /lib/i386-gnu/libc.so.0.3 - Backtrace stopped: previous frame inner to this frame (corrupt stack?) - (gdb) FAIL: gdb.base/relativedebug.exp: pause found in backtrace - - This is apparently new with the glibc 2.17 upgrade. Previously it said: - - (gdb) PASS: gdb.base/relativedebug.exp: continue - bt - #0 0x0107c85c in ?? () from /lib/i386-gnu/libc.so.0.3 - #1 0x0107d069 in mach_msg () from /lib/i386-gnu/libc.so.0.3 - #2 0x01220d4f in msg_sig_post () from /lib/i386-gnu/libhurduser.so.0.3 - #3 0x010bb683 in ?? () from /lib/i386-gnu/libc.so.0.3 - #4 0x010bb8f6 in kill () from /lib/i386-gnu/libc.so.0.3 - #5 0x010bad76 in raise () from /lib/i386-gnu/libc.so.0.3 - #6 0x010bf029 in abort () from /lib/i386-gnu/libc.so.0.3 - #7 0x08048597 in handler (signo=14) at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/relativedebug.c:25 - #8 0x01098282 in ?? () from /lib/i386-gnu/libc.so.0.3 - #9 0x010bbe5a in sigsuspend () from /lib/i386-gnu/libc.so.0.3 - #10 0x0112fee1 in pause () from /lib/i386-gnu/libc.so.0.3 - #11 0x080485c5 in main () at ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/relativedebug.c:32 - (gdb) PASS: gdb.base/relativedebug.exp: pause found in backtrace - - TODO. - - * `gdb.gdb/selftest.exp` - - (gdb) PASS: gdb.gdb/selftest.exp: send SIGINT signal to child process - backtrace - #0 0x0146fafc in ?? () from /lib/i386-gnu/libc.so.0.3 - #1 0x014703be in mach_msg () from /lib/i386-gnu/libc.so.0.3 - #2 0x0163bd98 in msg_sig_post () from /lib/i386-gnu/libhurduser.so.0.3 - #3 0x014b0141 in ?? () from /lib/i386-gnu/libc.so.0.3 - #4 0x014b03ed in kill () from /lib/i386-gnu/libc.so.0.3 - #5 0x082cf471 in _rl_handle_signal (sig=2) at ../../Ferry_Tagscherer/readline/signals.c:221 - #6 0x0148bac2 in ?? () from /lib/i386-gnu/libc.so.0.3 - Backtrace stopped: previous frame inner to this frame (corrupt stack?) - (gdb) FAIL: gdb.gdb/selftest.exp: backtrace through signal handler - - This is apparently new with the glibc 2.17 upgrade. Previously it said: - - (gdb) PASS: gdb.gdb/selftest.exp: send SIGINT signal to child process - backtrace - #0 0x0144885c in ?? () from /lib/i386-gnu/libc.so.0.3 - #1 0x01449069 in mach_msg () from /lib/i386-gnu/libc.so.0.3 - #2 0x015ecd4f in msg_sig_post () from /lib/i386-gnu/libhurduser.so.0.3 - #3 0x01487683 in ?? () from /lib/i386-gnu/libc.so.0.3 - #4 0x014878f6 in kill () from /lib/i386-gnu/libc.so.0.3 - #5 0x082cf401 in _rl_handle_signal (sig=2) at ../../Ferry_Tagscherer/readline/signals.c:221 - #6 0x01464282 in ?? () from /lib/i386-gnu/libc.so.0.3 - #7 0x0144fce3 in ?? () from /lib/i386-gnu/libc.so.0.3 - #8 0x0153975b in poll () from /lib/i386-gnu/libc.so.0.3 - #9 0x081c91c2 in gdb_wait_for_event (block=1) at ../../Ferry_Tagscherer/gdb/event-loop.c:804 - #10 0x081c998f in gdb_do_one_event () at ../../Ferry_Tagscherer/gdb/event-loop.c:402 - #11 0x081c9b07 in start_event_loop () at ../../Ferry_Tagscherer/gdb/event-loop.c:431 - #12 0x081c2f42 in captured_command_loop (data=data@entry=0x0) at ../../Ferry_Tagscherer/gdb/main.c:260 - #13 0x081c0e57 in catch_errors (func=func@entry=0x81c2f30 <captured_command_loop>, func_args=func_args@entry=0x0, errstring=errstring@entry=0x83 - 5b81b "", mask=mask@entry=6) at ../../Ferry_Tagscherer/gdb/exceptions.c:546 - #14 0x081c388c in captured_main (data=data@entry=0x19ff150) at ../../Ferry_Tagscherer/gdb/main.c:1055 - #15 0x081c0e57 in catch_errors (func=func@entry=0x81c3130 <captured_main>, func_args=func_args@entry=0x19ff150, errstring=errstring@entry=0x835b - 81b "", mask=mask@entry=6) at ../../Ferry_Tagscherer/gdb/exceptions.c:546 - #16 0x081c43c0 in gdb_main (args=0x19ff150) at ../../Ferry_Tagscherer/gdb/main.c:1064 - #17 0x08099533 in main (argc=5, argv=0x19ff1e8) at ../../Ferry_Tagscherer/gdb/gdb.c:34 - (gdb) PASS: gdb.gdb/selftest.exp: backtrace through signal handler - - TODO. - - * `gdb.python/python.exp` - - >PASS: gdb.python/python.exp: post event insertion - gdb.post_event(Foo()) - end - ERROR: Process no longer exists - UNRESOLVED: gdb.python/python.exp: post event insertion - end - - This is apparently new with the glibc 2.17 upgrade. Previously it said: - - >PASS: gdb.python/python.exp: post event insertion - gdb.post_event(Foo()) - end - (gdb) PASS: gdb.python/python.exp: post event insertion - end - [More PASSes.] - - TODO. - - * `gdb.base/restore.exp`, `gdb.base/store.exp` - - Several FAILs, starting with GCC 4.8 usage: - - (gdb) PASS: gdb.base/restore.exp: caller3 calls callee1; return callee now - print l1 - $16 = <optimized out> - (gdb) FAIL: gdb.base/restore.exp: caller3 calls callee1; return restored l1 to 32492 - - [[!GCC_PR 55056]], [[!message-id - "20130126202645.GA4888@host2.jankratochvil.net"]], and maybe [[!message-id - "CAO2gOZXvCLdaKE2=ZKpjGVGq8A0wQ94-AUo7eKvvWHWncrU_yg@mail.gmail.com"]] look - related. - -TODO. - - -# Open Issues - -## [[tag/open_issue_gdb]] - -## `info files` SIGSEGV - -[[!tag open_issue_gdb]] - - -### IRC, freenode, #hurd, 2013-09-07 - - <rekado> I'm trying to debug pfinet, but I'm not very familiar with gdb. - Tried to attach to the running pfinet process (built with debug symbols), - set a breakpoint and ... when I ran "info files" the process segfaulted. - <teythoon> which process segfaults, pfinet or gdb? - <rekado> gdb segfaults. - - -## Watchpoints - -[[!tag open_issue_gdb]] - - -### IRC, freenode, #hurd, 2013-09-16 - - <gnu_srs> tschwinge: Is gdb watch known to fail on hurd? It hangs for me - when logged in via ssh. - <tschwinge> gnu_srs: Don't know about GDB's watch command. Are you sure it - is hanging? +[[!meta redir=binutils]] |