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diff --git a/open_issues/binutils.mdwn b/open_issues/binutils.mdwn deleted file mode 100644 index 306ba38a..00000000 --- a/open_issues/binutils.mdwn +++ /dev/null @@ -1,954 +0,0 @@ -[[!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 -document under the terms of the GNU Free Documentation License, Version 1.2 or -any later version published by the Free Software Foundation; with no Invariant -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]]."]]"""]] - -[[!meta title=binutils-gdb]] - -[[!tag stable_URL open_issue_binutils open_issue_gdb]] - -Here's what's to be done for maintaining GNU Binutils and GDB. - - -[[!toc levels=2]] - - -# General Information - - -## [[/Binutils]] - -As these tools primarily deal with low-level parts of the target architecture -and the object file format (ELF ABI), which are essentially (at least meant to -be) the same, there shouldn't be many differences comparing the binutils -between the GNU/Hurd and GNU/Linux ports, for example. There are a few, -though, as explained below. - - -## [[/GDB]] - -GDB needs an processor architecture as well as operating system port. - - -# Configuration - -<!-- - -git checkout reviewed -git diff --patience --stat=$COLUMNS,$COLUMNS --patch --src-prefix=./ --dst-prefix=./ --find-renames --ignore-space-change ..upstream/master | awk '/^diff/ { c = " " $0; } /^@@/ { print c; } { print; }' | less --i -/^---.*/([^.]*|.*\.texi.*|[^/]*gnu[^/]*)$|hurd|linux|nacl|nptl|glibc|gs: - ---> - -Last reviewed up to Git commit c2853f3d99797a321c37948297441ca6021f719a -(2014-02-14). - - * Globally - - * a.out (such as `ld/emulparams/i386linux.sh`, `ld/emultempl/linux.em`, - etc.), 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 they need to be - conditionalized like this at all.) - - * `bfd/` - - * `config.bfd` - - * `i[3-7]86-*-gnu*` - - Comparing to `i[3-7]86-*-linux-*`: - - * `i386linux_vec` -- a.out. - - * `i386pei_vec` -- PE. - - * 64 bit. - - * `configure.host` - - Souldn't need anything. x86 Linux neither. - - * `configure.in` - - Linux: - - * `COREFILE=trad-core.lo` with `TRAD_HEADER='"hosts/i386linux.h"'` - - We don't have any such core file support configured. TODO: should - we? Where is this core file reading exactly used? GDB? - - * `i386linux_vec` -- a.out. - - * `i386pei_vec` -- PE. - - * `binutils/` - - * `configure.tgt` - - * `gas/` - - * `config/te-gnu.h` - - C.f. `te-linux.h`; search tree for `TE_LINUX` vs. `TE_GNU` usage. - - * `tc-i386.h` - - Sole `TE_LINUX` usage is for a.out. - - * `configure.tgt` - - * `gdb/` - - * Have a look at config/i386/i386gnu.mh. - - * configure.tgt - - * glibc-tdep et al. also for GNU/Hurd? - - * [[gdb/gdbserver]] - - * In `gdb/gnu-nat.c:gnu_wait`, we don't implement - `gdb/target/wait.h:TARGET_WNOHANG`. What is this needed for? - - * `libdecnumber/` - - Should/can probably align to GNU/Linux. - - * `ld/` - - * `configure.host` - - * `*-*-gnu*` - - TODO: resolve `crt0.o` vs. `crt1.o` issue. [[Testsuite - failures|binutils#static]]. - - * `configure.tgt` - - * `i[3-7]86-*-gnu*` - - Compare to `i[3-7]86-*-linux-*`, but don't need a.out (`i386linux`) - and 64 bit support. - - * `__ehdr_start symbol`, c84ed8d89d0b8bf5a2968d465f77ac24bcfc40c2 -- can this - be helpful in the exec server, glibc, or elsewhere? Used in GDB (BFD) - commit bdbd9758806ed855af89244870fdc52cf3ff09bc. - Used in glibc commit 288f7d79fe2dcc8e62c539f57b25d7662a2cd5ff `Use - __ehdr_start, if available, as fallback for AT_PHDR.`. - - * `Add HOSTING_SCRT0 for PIE test`, 49cc20aa5c416ea4307931cccf6353247368187d - -- is for GNU/Linux only; but also seems unused. - - * 82763a3d329b0d342d0273941b1521be9ef0c604 »MODIFIED is unknown, pass it as - true.« - - * Configure so that Debian system's `/usr/lib/debug/[...]` will be loaded - automatically. - - * [[!message-id "m3ei24vh4l.fsf@fleche.redhat.com"]] - - * [low] c26e9cbb0ce70e8fca32a40c434a0837bf46750a, - `gdb/gnu-nat.c:set_exceptions_cmd`, `Make this take effect immediately in a - running process`. - - * [low] b27caf75c311991772b316fe7c0eecfd5788eeaf, ld, `Add HOSTING_SLIBS and - use it for -pie`. For us, too? - - -# Build - -Here's a log of a binutils-gdb build run; this is from Git commit -c2853f3d99797a321c37948297441ca6021f719a (2014-02-14) plus -[[!message-id "87vbxxhww4.fsf@kepler.schwinge.homeip.net"]], -[[!message-id "8738kyi30l.fsf@kepler.schwinge.homeip.net"]], -[[!message-id "8761ofv62k.fsf@kepler.schwinge.homeip.net"]], -[[!message-id "1391759958-972-2-git-send-email-yao@codesourcery.com"]], -[[!message-id "1391759958-972-3-git-send-email-yao@codesourcery.com"]], run on -kepler.SCHWINGE and coulomb.SCHWINGE. - - $ export LC_ALL=C - $ ../W._C._Handy/configure --prefix="$PWD".install --enable-gold --with-sysroot=/ 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. Debian GCC (which is used in binutils' testsuite) likes to pass -`--sysroot=/` to `ld`, so we need to configure binutils with support for -sysroots. In the GDB build, 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 1.3 GiB, and needs roughly 17 min on kepler.SCHWINGE and -79 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 binutils-gdb build - - * For GDB, 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` - - 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]]? - - -# Install - - $ make install 2>&1 | tee log_install - [...] - -This takes up around 200 MiB, and needs roughly 2 min on kepler.SCHWINGE and 6 -min on coulomb.SCHWINGE. - - -## Analysis - - $ toolchain/logs/process binutils-gdb install - - * `libtool: finish`: `ldconfig` is not run for the Hurd. - - -# Testsuite - - $ make -k check 2>&1 | tee log_test - [...] - -This needs roughly 20 min on kepler.SCHWINGE and 140 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 -(`?`) GDB one ("57 PIDs before" `expect [...] gdb.cp`). - - -## Analysis - -GDB's 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 binutils-gdb test - - * <a name="static"><!-- stable_URL -->`FAIL: static [...]`</a> - - The testsuite isn't prepared for using `crt0.o` instead of `crt1.o` - depending on whether a static or dynamic executable is created. Documented - in `ld/configure.host`. Perhaps we should finally rewrite this messy code - in glibc? Or, something similar to commit - 49cc20aa5c416ea4307931cccf6353247368187d `Add HOSTING_SCRT0 for PIE test` - or commit b27caf75c311991772b316fe7c0eecfd5788eeaf `Add HOSTING_SLIBS and - use it for -pie` - can be used. - - Same issue for `FAIL: Common symbol override ifunc *` ones? - - * <a name="64ksec">`FAIL: ld-elf/64ksec`</a> - - On the idle grubber, this one takes a few minutes wall time to complete - successfully ([[I/O system - weakness|performance/io_system/binutils_ld_64ksec]]), so assuming some - system load variation, the testsuite's timeout may trigger. - - * `FAIL: gas/i386/rept` (intermittently) - - Added in commit 06f1247c54126b9f1e6acb8ff8c7be35aec6f44c (2012-06-07) as - part of the fix for [[!sourceware_PR 14201]], renamed in commit - d654e24bbc2f601df4dc43b26049b0339528b93a (2012-06-07): - - WARNING: program timed out. - FAIL: gas/i386/rept - - * ld IFUNC execution tests - - Missing [[IFUNC]] support on GNU/Hurd. - - Added in commit 82c5587db078581cfe94a4385ed99de1d1fa6657 (2012-09-19): - - FAIL: Common symbol override ifunc test 1a - FAIL: Common symbol override ifunc test 1b - - * gold GNU/Linux vs. GNU/Hurd - - -FAIL: relro_test.sh - +PASS: relro_test.sh - - -PASS: ver_matching_test.sh - +FAIL: ver_matching_test.sh - - -PASS: script_test_3 - +FAIL: script_test_3 - - -PASS: tls_phdrs_script_test - +FAIL: tls_phdrs_script_test - - * `gdb.base/attach-pie-misread.exp` - - Is only run for GNU/Linux; needs [[prelink]]. - - * Disabled - - * `gdb.base/interrupt.exp` - - PASS: gdb.base/interrupt.exp: child process is alive - a - a - PASS: gdb.base/interrupt.exp: child process ate our char - ^C - Program received signal SIGINT, Interrupt. - -0x010bf5a2 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - +0x010bdb09 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - (gdb) PASS: gdb.base/interrupt.exp: send_gdb control C - p func1 () - - Program received signal SIGTRAP, Trace/breakpoint trap. - -0x010bf5a2 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - +0x010bdb09 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - The program being debugged was signaled while in a function called from GDB. - GDB remains in the frame where the signal was received. - To change this behavior use "set unwindonsignal on". - Evaluation of the expression containing the function - (func1) will be abandoned. - When the function is done executing, GDB will silently stop. - (gdb) FAIL: gdb.base/interrupt.exp: call function when asleep (wrong output) - p func1 () - - Program received signal SIGTRAP, Trace/breakpoint trap. - -0x010bf5a2 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - +0x010bdb09 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - The program being debugged was signaled while in a function called from GDB. - GDB remains in the frame where the signal was received. - To change this behavior use "set unwindonsignal on". - Evaluation of the expression containing the function - (func1) will be abandoned. - When the function is done executing, GDB will silently stop. - (gdb) FAIL: gdb.base/interrupt.exp: call function a second time - continue - Continuing. - -PASS: gdb.base/interrupt.exp: continue - + - +Program received signal SIGSEGV, Segmentation fault. - +0x010bdb09 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - +(gdb) FAIL: gdb.base/interrupt.exp: continue - data - PASS: gdb.base/interrupt.exp: echo data - ^C(gdb) Quit - (gdb) FAIL: gdb.base/interrupt.exp: Send Control-C, second time - signal SIGINT - Continuing with signal SIGINT. - PASS: gdb.base/interrupt.exp: signal SIGINT - more data - PASS: gdb.base/interrupt.exp: echo more data - - Program received signal SIGSEGV, Segmentation fault. - -0x010bf6c8 in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - +0x010bdc9d in _hurd_intr_rpc_mach_msg () from /lib/i386-gnu/libc.so.0.3 - (gdb) more data - Undefined command: "more". Try "help". - (gdb) FAIL: gdb.base/interrupt.exp: send end of file - -testcase ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/interrupt.exp completed in 6 seconds - +[hangs] - - 7939 1000 6817 7939 7939 2 144M 8.92M 93.8 5:29.23 10hrs /media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/testsuite/../../gdb/gdb -nw -nx -data-directory /media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/testsuite/../data-directory - 7944 1000 7939 7944 7939 2 146M 744K 0.0 0:00.00 0:00.01 /media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/testsuite/gdb.base/interrupt - - $ gdb -q tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/gdb 7961 - Reading symbols from /media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/gdb...done. - Attaching to program `/media/erich/home/thomas/tmp/gdb/tschwinge/Ferry_Tagscherer.build/gdb/gdb', pid 7961 - [New Thread 7961.1] - [New Thread 7961.2] - - warning: Can't modify tracing state for pid 7961: (ipc/rcv) timed out - Reading symbols [...] - (gdb) thread apply all bt full - - Thread 2 (Thread 7961.2): - #0 0x014949cc in swtch_pri () at /build/eglibc-wYOBb2/eglibc-2.17/build-tree/hurd-i386-libc/mach/swtch_pri.S:2 - No locals. - #1 0x01496354 in __spin_lock_solid (lock=0x168100c) at spin-solid.c:26 - No locals. - #2 0x014aa677 in __spin_lock (__lock=<optimized out>) at ../mach/lock-intern.h:54 - No locals. - #3 _hurd_sigstate_lock (ss=0x1681808) at hurdsig.c:175 - No locals. - #4 0x014acbfb in post_signal (untraced=untraced@entry=0) at hurdsig.c:680 - err = <optimized out> - handler = <optimized out> - blocked = <optimized out> - __PRETTY_FUNCTION__ = "post_signal" - signo = 11 - act = 23593696 - ss = 0x1681808 - thread_state = {set = 0, basic = {gs = 1, fs = 17840912, es = 23594144, ds = 17840912, edi = 23290621, esi = 21506724, ebp = 23281960, esp = 1, ebx = 3, edx = 27255556, ecx = 23599112, eax = 163840, eip = 23273912, - cs = 29351492, efl = 29351424, uesp = 0, ss = 29351336}, fpu = {fpkind = 17840912, initialized = 29351344, - hw_state = "\364\213\002\000\000\000\000\000\000\000\000\000cfH\001\000\000\000\000\377\377\377\377\000 c\001T\244G\001\020;\020\001\b\030h\001\000\260g\001\370ݿ\001\060\357\277\001p\000\000\000\233\322e\001\220ݿ\001\216\246J\001\000\300b\001\260\341J\001\b\030h\001\000\000\000\000\000\000\000\000\000 c\001\022\000\000\000\000\200\002\000\020;\020\001\030\306b\001", exc_status = 359}} - ss_suspended = 0 - reply = 0x1bfddf4 - detail = 0x1bfde4c - #5 0x014ae29e in _hurd_internal_post_signal (ss=ss@entry=0x1681808, signo=11, detail=detail@entry=0x1bfde4c, reply_port=reply_port@entry=0, reply_port_type=reply_port_type@entry=17, untraced=untraced@entry=0) at hurdsig.c:1221 - reply_rpc = 0x165d200 <__msg_sig_post_reply> - #6 0x014af98f in _S_catch_exception_raise (port=142, thread=112, task=1, exception=1, code=2, subcode=19137735) at catch-exc.c:88 - ss = 0x1681808 - signo = 11 - d = {exc = 1, exc_code = 2, exc_subcode = 19137735, code = 2, error = EKERN_PROTECTION_FAILURE} - #7 0x016442c2 in _Xexception_raise (OutHeadP=0x1bfdf20, InHeadP=0x1bfef30) at /build/eglibc-wYOBb2/eglibc-2.17/build-tree/hurd-i386-libc/mach/mach/exc_server.c:150 - No locals. - #8 _Xexception_raise (InHeadP=0x1bfef30, OutHeadP=0x1bfdf20) at /build/eglibc-wYOBb2/eglibc-2.17/build-tree/hurd-i386-libc/mach/mach/exc_server.c:41 - In0P = 0x1bfef30 - OutP = 0x1bfdf20 - #9 0x01644344 in _S_exc_server (InHeadP=InHeadP@entry=0x1bfef30, OutHeadP=OutHeadP@entry=0x1bfdf20) at /build/eglibc-wYOBb2/eglibc-2.17/build-tree/hurd-i386-libc/mach/mach/exc_server.c:189 - InP = 0x1bfef30 - OutP = 0x1bfdf20 - routine = 0x1644220 <_Xexception_raise> - #10 0x014a58ec in msgport_server (outp=0x1bfdf20, inp=0x1bfef30) at msgportdemux.c:49 - No locals. - #11 msgport_server (inp=inp@entry=0x1bfef30, outp=outp@entry=0x1bfdf20) at msgportdemux.c:36 - d = 0x0 - #12 0x01495898 in __mach_msg_server_timeout (demux=demux@entry=0x14a5890 <msgport_server>, max_size=max_size@entry=4096, rcv_name=rcv_name@entry=142, option=option@entry=0, timeout=timeout@entry=0) at msgserver.c:108 - request = 0x1bfef30 - reply = 0x1bfdf20 - mr = <optimized out> - __PRETTY_FUNCTION__ = "__mach_msg_server_timeout" - #13 0x014959cb in __mach_msg_server (demux=demux@entry=0x14a5890 <msgport_server>, max_size=4096, rcv_name=142) at msgserver.c:195 - No locals. - #14 0x014a597d in _hurd_msgport_receive () at msgportdemux.c:67 - No locals. - #15 0x010f7956 in entry_point (self=0x8520788, start_routine=0x14a5920 <_hurd_msgport_receive>, arg=0x0) at ./pthread/pt-create.c:61 - No locals. - #16 0x00000000 in ?? () - No symbol table info available. - - Thread 1 (Thread 7961.1): - #0 _hurd_userlink_unlink (link=0x81c2a20 <command_handler+48>) at ../hurd/hurd/userlink.h:123 - No locals. - #1 __sigreturn (scp=0x81c2950 <handle_sigint>) at ../sysdeps/mach/hurd/i386/sigreturn.c:47 - link = 0x81c2a20 <command_handler+48> - reply_port = <optimized out> - #2 0x014aef46 in trampoline () from /lib/i386-gnu/libc.so.0.3 - No locals. - #3 0x081c2950 in ?? () at ../../Ferry_Tagscherer/gdb/event-top.c:869 - sigtstp_token = 0x860a7c0 - sighup_token = 0x86089e0 - more_to_come = 0 - sigfpe_token = 0x860a7a8 - sigquit_token = 0x86089c8 - sigint_token = 0x860a3b0 - call_readline = 0x81c2ab0 <rl_callback_read_char_wrapper> - exec_done_display_p = 0 - input_handler = 0x81c2c50 <command_line_handler> - async_command_editing_p = 1 - after_char_processing_hook = 0x0 - async_annotation_suffix = 0x83d8648 "prompt" - input_fd = 0 - readline_input_state = {linebuffer = 0x0, linebuffer_ptr = 0x0} - Backtrace stopped: previous frame inner to this frame (corrupt stack?) - (gdb) kill - Kill the program being debugged? (y or n) y - - * `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.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. - - * `gdb.base/default.exp` - - shell echo Hi dad! - bash: relocation error: /lib/i386-gnu/libdl.so.2: symbol __libc_lock_self, version GLIBC_PRIVATE not defined in file libc.so.0.3 with link time reference - (gdb) FAIL: gdb.base/default.exp: shell echo Hi dad! - - TODO. - - * `gdb.base/exitsignal.exp` - - Running ../../../Ferry_Tagscherer/gdb/testsuite/gdb.base/exitsignal.exp ... - PASS: gdb.base/exitsignal.exp: $_exitsignal is void before running - PASS: gdb.base/exitsignal.exp: $_exitcode is void before running - PASS: gdb.base/exitsignal.exp: trigger SIGSEGV - PASS: gdb.base/exitsignal.exp: program terminated with SIGSEGV - FAIL: gdb.base/exitsignal.exp: $_exitsignal is 11 (SIGSEGV) after SIGSEGV. - PASS: gdb.base/exitsignal.exp: $_exitcode is still void after SIGSEGV - PASS: gdb.base/exitsignal.exp: rerun to main - FAIL: gdb.base/exitsignal.exp: $_exitsignal is 11 (SIGSEGV) after restarting the inferior - PASS: gdb.base/exitsignal.exp: $_exitcode is still void after restarting the inferior - PASS: gdb.base/exitsignal.exp: $_exitsignal is void before normal inferior is executed - PASS: gdb.base/exitsignal.exp: $_exitcode is void before normal inferior is executed - PASS: gdb.base/exitsignal.exp: continue until exit - PASS: gdb.base/exitsignal.exp: $_exitcode is zero after normal inferior is executed - PASS: gdb.base/exitsignal.exp: $_exitsignal is still void after normal inferior is executed - - TODO. - - * `gdb.arch/i386-prologue.exp` - - There are several FAILs, where there are unexpected frames showing up in - backtraces, for example. Earlier on, these just FAILed on - coulomb.SCHWINGE; since - 9939e1314f970c6ba568956148a518ac710a280a..c2853f3d99797a321c37948297441ca6021f719a - on kepler.SCHWINGE, too. TODO. - - * [[libgc|boehm_gc]] `GC_find_limit_with_bound` SIGSEGVs - - On coulomb.SCHWINGE, in - 9939e1314f970c6ba568956148a518ac710a280a..c2853f3d99797a321c37948297441ca6021f719a - several PASSes regressed to FAILs: - - Starting program: [...]/gdb/testsuite/gdb.gdb/xgdb -nw -nx -data-directory [...]/gdb/testsuite/../data-directory - [New Thread 13417.5] - - Program received signal SIGSEGV, Segmentation fault. - 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1 - (gdb) FAIL: gdb.gdb/complaints.exp: run until breakpoint at captured_command_loop - WARNING: Couldn't test self - - Starting program: [...]/gdb/testsuite/gdb.gdb/xgdb -nw -nx -data-directory [...]/gdb/testsuite/../data-directory - [New Thread 13448.5] - - Program received signal SIGSEGV, Segmentation fault. - 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1 - (gdb) FAIL: gdb.gdb/python-interrupts.exp: run until breakpoint at captured_command_loop - WARNING: Couldn't test self - - Starting program: [...]/gdb/testsuite/gdb.gdb/xgdb -nw -nx -data-directory [...]/gdb/testsuite/../data-directory - [New Thread 13464.3] - - Program received signal SIGSEGV, Segmentation fault. - 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1 - (gdb) FAIL: gdb.gdb/python-selftest.exp: run until breakpoint at captured_command_loop - WARNING: Couldn't test self - - (gdb) PASS: gdb.gdb/selftest.exp: step into xmalloc call - continue - Continuing. - - Program received signal SIGSEGV, Segmentation fault. - 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1 - (gdb) FAIL: gdb.gdb/selftest.exp: xgdb is at prompt - - These are all tests where GDB examines itself; being linked against libgc - (new dependency due to new Guile scripting support; all Guile scripting - tests PASS). So, probably some bad interaction between GDB and a debuggee - that is using libgc; maybe libgc is using SIGSEGV for internal signalling - purposes; see the `HEURISTIC2` discussion on [[boehm_gc]]. - - #0 0x0126b961 in GC_find_limit_with_bound () from /usr/lib/i386-gnu/libgc.so.1 - #1 0x0126ba2e in GC_find_limit () from /usr/lib/i386-gnu/libgc.so.1 - #2 0x0126bb15 in GC_get_stack_base () from /usr/lib/i386-gnu/libgc.so.1 - #3 0x011be0ec in scm_init_guile () from /usr/lib/libguile-2.0.so.22 - #4 0x081203ba in _initialize_guile () at ../../W._C._Handy/gdb/guile/guile.c:704 - #5 0x082dc94d in initialize_all_files () at init.c:291 - #6 0x082a3c7f in gdb_init (argv0=0x8563e90 "[...]/gdb/testsuite/gdb.gdb/xgdb") at ../../W._C._Handy/gdb/top.c:1822 - #7 0x081da3b8 in captured_main (data=0x1bff164) at ../../W._C._Handy/gdb/main.c:747 - #8 0x081d70e9 in catch_errors (func=func@entry=0x81da110 <captured_main>, func_args=func_args@entry=0x1bff164, errstring=errstring@entry=0x837a0e5 "", mask=mask@entry=RETURN_MASK_ALL) at ../../W._C._Handy/gdb/exceptions.c:524 - #9 0x081db277 in gdb_main (args=0x1bff164) at ../../W._C._Handy/gdb/main.c:1062 - #10 0x0809714b in main (argc=5, argv=0x1bff1f4) at ../../W._C._Handy/gdb/gdb.c:33 - - TODO. - -TODO. - - -# Open Issues - -## [[tag/open_issue_binutils]] - -## [[tag/open_issue_gdb]] - -## 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. - - -## GDB 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? |