Description of problem: When an application links to an old version of libstdc++, symbols collide, beacuse scim links to the latest version. Version-Release number of selected component (if applicable): 1.4.0 How reproducible: everytime Steps to Reproduce: 1. Install application like acroread 7.0 which use older stdc++ 2. acroread Actual results: crash Expected results: running okay
I tried --enable-ld-version-script on RHEL4 where the toolchain is older and more mature than that in FC4+. It succeeds in allowing openoffice.org to run (which relies on compat-libstdc++ 3.3 instead of the native 3.4 of RHEL4. Unfortunately it fails to fix acroread. According to Su Zhe, acroread has internal symbol conflicts where even --enable-ld-version-script is unable to fix conflicts. acroread crashes when you launch it with environment variables disabled but with scim installed. I suspect this is because it is loading gtk+, which loads the immodule into memory. Jens mentioned that XIM should still work, but this is doubtful given the above.
OK... Jens was right. GTK_IM_MODULE=gtk-im-context-simple allows acroread to work.
--enable-ld-version-script is working in RHEL4 and FC3, but FC4+ it causes total desktop software failure. Even gdm fails to start and crashes immediately. We will need Jakub's help on this. There is something about the FC4+ toolchain or glibc that is causing --enable-ld-version-script built binaries to totally fail during runtime.
Of course you can't mix different libstdc++.so (major) versions within one program, unless using dlmopen rather than dlopen. If you limit to C++ without STL (i.e. limit yourself to just <new>, <exception> and <typeinfo> headers from C++ headers), you could link libsupc++.a statically and using a version script avoid exporting those symbols to the rest of the arch. Otherwise, your only choices are dlmopen (but in that case it would mean that a lot of libraries would be loaded twice, unless you can squeeze some of the 20 libraries immmodule.so loads (are they all really necessary?)), having separate immmodule.so versions depending on libstdc++.so version, not using C++ for this kind of library at all or running it in a different process from the main app.
Thanks, Jakub, but that doesn't explain why --enable-ld-version-script isn't working with FC4 and later, or does it? :)
Right, Jakub I believe you misunderstand our problem. We know the limitations of having more than one libstdc++. --enable-ld-version-script for scim's build allows it to workaround some (but not all) of those limitations. It works fine on RHEL4 and SuSE's devel with gcc-4.0.0. There is something different about FC4's toolchains or glibc that causes scim built in this way to totally fail. That is the specific issue where we need your help.
I don't see how can using a version script for immmodule.so (which is of course a good thing) and libscim*.so help this. Those libraries link dynamically against libstdc++.so, so the version script has no influence on what symbols are exported from other shared libraries. libstdc++.so uses symbol versioning as well, but if you use STL in the main program linked say with the old libstdc++.so (3.3 and earlier), whatever makes into the binary and/or its libraries and is being exported will be unversioned. This results in mixing of incompatible interfaces. You can be lucky, as you from the above were in RHEL4. You aren't lucky anymore. That's it. It all depends on what exact symbols do get used and exported from where and how they changed. Simply live with the fact that you really can't do this reliably.
We are aware that we cannot avoid all problems due to apps that are linked to an older libstdc++. The problem that we need help solving is the complete failure of scim when it is built with --enable-ld-version-script, when dealing with only C and the current version of libstdc++.
There are no details here about how it crashes, backtraces etc. One possible thing could be that some C++ symbols really ought to be always exported. Say if you hide using version script _ZZN9__gnu_cxx20__common_pool_policyINS_6__poolELb1EE11_S_get_poolEvE7_S_pool and _ZGVZN9__gnu_cxx20__common_pool_policyINS_6__poolELb1EE11_S_get_poolEvE7_S_pool and then allocate some object using STL allocator in one shared library and destroy it in a different library, you lose, as here libstdc++ relies on ODR. Similarly with other _S_pool variable objects. Also, if you use RTTI, libstdc++ uses simple pointer comparison for RTTI checks; see /usr/include/c++/4.0*/typeinfo header. If you hide the typeinfo symbols (I think these are _ZTI* ones) and try to use RTTI in one shared library on an object created in another shared library, RTTI might give wrong answers.
qwang apparently found that RHEL4's libstdc++-3.3 built openoffice.org is not perfect with the ld version script of libsstdc++-3.4 scim, with scim failing permanently after a while during usage. I'm afraid we need to explore other ways of avoiding this problem, because even if we find the solution to the total failure issue with ld version scripts of FC4+, it isn't anywhere near good enough to do what we need.
Jakub, upstream told me that this symbol conflict problem will go away once everyone is using libstdc++ >= 4.0. Is that correct?
qwang's finding in Comment #10 turned out to happen with GTK_IM_MODULE=xim too, so it is unlikely related to this C++ compat issue. > Jakub, upstream told me that this symbol conflict problem will go away > once everyone is using libstdc++ >= 4.0. Is that correct? Isn't it overly optimistic to think that the C++ ABI will never change again? I also don't like the idea of abandoning compatibility with all apps compiled with an older C++ compiler.
Warren, comment 11 is just a side question: whether gcc 4 and later avoid this problem or not.
https://bugzilla.novell.com/show_bug.cgi?id=85416&x=8&y=7 Novell's equivalent bug where they marked it as "FIXED" despite it being not perfect.
From Comment #7, we need details of the complete failure of SCIM under normal conditions (no mixing of libstdc++ versions) in order for Jakub to be able to help us diagnose this problem. Setting NEEDINFO_ENG.
Here is a gdb backtrace with gedit. The backtrace occurs when switching to SCIM in the IM menu on Button3. This is with scim built configured with --enable-ld-version-script. $ gdb gedit GNU gdb Red Hat Linux (6.3.0.0-1.65rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu"...(no debugging symbols found) Using host libthread_db library "/lib64/libthread_db.so.1". (gdb) r Starting program: /usr/bin/gedit (no debugging symbols found) : (no debugging symbols found) [Thread debugging using libthread_db enabled] [New Thread 46912501217584 (LWP 24437)] (no debugging symbols found) : (no debugging symbols found) Detaching after fork from child process 24441. (no debugging symbols found) : (no debugging symbols found) Detaching after fork from child process 24444. GTK Panel of SCIM 1.4.2 *** glibc detected *** /usr/bin/gedit: free(): invalid pointer: 0x0000000000b04d00 *** ======= Backtrace: ========= /lib64/libc.so.6[0x3107b6b0be] /lib64/libc.so.6(__libc_free+0x6e)[0x3107b6b5ee] /usr/lib64/scim-1.0/1.4.0/IMEngine/socket.so[0x2aaab6c0370a] /usr/lib64/scim-1.0/1.4.0/IMEngine/socket.so[0x2aaab6c0608a] /usr/lib64/scim-1.0/1.4.0/IMEngine/socket.so[0x2aaab6c064c3] /usr/lib64/gtk-2.0/immodules/im-scim.so[0x2aaab66ac71a] /usr/lib64/libgtk-x11-2.0.so.0[0x310a58e3f6] /usr/lib64/libgtk-x11-2.0.so.0[0x310a50e206] /usr/lib64/libgobject-2.0.so.0(g_closure_invoke+0x110)[0x310880ac61] /usr/lib64/libgobject-2.0.so.0[0x3108818116] /usr/lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x3ce)[0x3108818e54] /usr/lib64/libgobject-2.0.so.0(g_signal_emit+0x83)[0x31088194d2] /usr/lib64/libgtk-x11-2.0.so.0[0x310a5d8328] /usr/lib64/libgtk-x11-2.0.so.0[0x310a5e54c0] /usr/lib64/libgtk-x11-2.0.so.0[0x310a5e9252] /usr/lib64/libgtk-x11-2.0.so.0[0x310a5e92cc] /usr/lib64/libgtk-x11-2.0.so.0[0x310a50e206] /usr/lib64/libgobject-2.0.so.0(g_closure_invoke+0x110)[0x310880ac61] /usr/lib64/libgobject-2.0.so.0[0x3108818116] /usr/lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x3ce)[0x3108818e54] /usr/lib64/libgobject-2.0.so.0(g_signal_emit+0x83)[0x31088194d2] /usr/lib64/libgtk-x11-2.0.so.0[0x310a5d8328] /usr/lib64/libgtk-x11-2.0.so.0(gtk_main_do_event+0x325)[0x310a50cf3c] /usr/lib64/libgdk-x11-2.0.so.0[0x3109842951] /usr/lib64/libglib-2.0.so.0(g_main_context_dispatch+0x1d5)[0x3108625dae] /usr/lib64/libglib-2.0.so.0[0x3108628a64] /usr/lib64/libglib-2.0.so.0(g_main_loop_run+0x192)[0x3108628f50] /usr/lib64/libgtk-x11-2.0.so.0(gtk_main+0xa1)[0x310a50c4aa] /usr/bin/gedit(main+0x211)[0x41ef9e] /lib64/libc.so.6(__libc_start_main+0xef)[0x3107b1cd1f] /usr/bin/gedit[0x41e059] ======= Memory map: ======== 00400000-0046f000 r-xp 00000000 fd:00 4062283 /usr/bin/gedit 0056f000-0057d000 rw-p 0006f000 fd:00 4062283 /usr/bin/gedit 0057d000-00c25000 rw-p 0057d000 00:00 0 [heap] 3107900000-310791a000 r-xp 00000000 fd:00 1407656 /lib64/ld-2.3.90.so 3107a19000-3107a1a000 r--p 00019000 fd:00 1407656 /lib64/ld-2.3.90.so 3107a1a000-3107a1b000 rw-p 0001a000 fd:00 1407656 /lib64/ld-2.3.90.so 3107b00000-3107c2f000 r-xp 00000000 fd:00 1407658 /lib64/libc-2.3.90.so 3107c2f000-3107d2e000 ---p 0012f000 fd:00 1407658 /lib64/libc-2.3.90.so 3107d2e000-3107d32000 r--p 0012e000 fd:00 1407658 /lib64/libc-2.3.90.so 3107d32000-3107d34000 rw-p 00132000 fd:00 1407658 /lib64/libc-2.3.90.so 3107d34000-3107d38000 rw-p 3107d34000 00:00 0 3107e00000-3107e84000 r-xp 00000000 fd:00 1407659 /lib64/libm-2.3.90.so 3107e84000-3107f84000 ---p 00084000 fd:00 1407659 /lib64/libm-2.3.90.so 3107f84000-3107f85000 r--p 00084000 fd:00 1407659 /lib64/libm-2.3.90.so 3107f85000-3107f86000 rw-p 00085000 fd:00 1407659 /lib64/libm-2.3.90.so 3108000000-3108002000 r-xp 00000000 fd:00 1407660 /lib64/libdl-2.3.90.so 3108002000-3108102000 ---p 00002000 fd:00 1407660 /lib64/libdl-2.3.90.so 3108102000-3108103000 r--p 00002000 fd:00 1407660 /lib64/libdl-2.3.90.so 3108103000-3108104000 rw-p 00003000 fd:00 1407660 /lib64/libdl-2.3.90.so 3108200000-3108214000 r-xp 00000000 fd:00 4070253 /usr/lib64/libz.so.1.2.3 3108214000-3108313000 ---p 00014000 fd:00 4070253 /usr/lib64/libz.so.1.2.3 3108313000-3108314000 rw-p 00013000 fd:00 4070253 /usr/lib64/libz.so.1.2.3 3108400000-31084da000 r-xp 00000000 fd:00 4070058 /usr/X11R6/lib64/libX11.so.6.2 31084da000-31085d9000 ---p 000da000 fd:00 4070058 /usr/X11R6/lib64/libX11.so.6.2 31085d9000-31085df000 rw-p 000d9 Program received signal SIGABRT, Aborted. [Switching to Thread 46912501217584 (LWP 24437)] 0x0000003107b2fbe0 in raise () from /lib64/libc.so.6 (gdb) bt #0 0x0000003107b2fbe0 in raise () from /lib64/libc.so.6 #1 0x0000003107b310b0 in abort () from /lib64/libc.so.6 #2 0x0000003107b653ef in __libc_message () from /lib64/libc.so.6 #3 0x0000003107b6b0be in _int_free () from /lib64/libc.so.6 #4 0x0000003107b6b5ee in free () from /lib64/libc.so.6 #5 0x00002aaab6c0370a in scim::SocketInstance::do_transaction (this=0xc21750, trans=@0x7fffffc5bf20, ret=@0x7fffffc5befe) at /usr/lib/gcc/x86_64-redhat-linux/4.0.1/../../../../include/c++/4.0.1/bits/stl_vector.h:123 #6 0x00002aaab6c0608a in scim::SocketInstance::commit_transaction (this=0xc21750, trans=@0x7fffffc5bf20) at scim_socket_imengine.cpp:829 #7 0x00002aaab6c064c3 in scim::SocketInstance::reset (this=0xc21750) at scim_socket_imengine.cpp:736 #8 0x00002aaab66ac71a in gtk_im_context_scim_focus_in (context=Variable "context" is not available. ) at gtkimcontextscim.cpp:722 #9 0x000000310a58e3f6 in gtk_text_view_get_accepts_tab () from /usr/lib64/libgtk-x11-2.0.so.0 #10 0x000000310a50e206 in gtk_marshal_VOID__UINT_STRING () from /usr/lib64/libgtk-x11-2.0.so.0 #11 0x000000310880ac61 in g_closure_invoke () from /usr/lib64/libgobject-2.0.so.0 #12 0x0000003108818116 in g_signal_stop_emission () from /usr/lib64/libgobject-2.0.so.0 #13 0x0000003108818e54 in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0 #14 0x00000031088194d2 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0 #15 0x000000310a5d8328 in gtk_widget_activate () from /usr/lib64/libgtk-x11-2.0.so.0 #16 0x000000310a5e54c0 in gtk_window_propagate_key_event () from /usr/lib64/libgtk-x11-2.0.so.0 #17 0x000000310a5e9252 in gtk_window_activate_key () from /usr/lib64/libgtk-x11-2.0.so.0 #18 0x000000310a5e92cc in gtk_window_activate_key () from /usr/lib64/libgtk-x11-2.0.so.0 #19 0x000000310a50e206 in gtk_marshal_VOID__UINT_STRING () from /usr/lib64/libgtk-x11-2.0.so.0 #20 0x000000310880ac61 in g_closure_invoke () from /usr/lib64/libgobject-2.0.so.0 #21 0x0000003108818116 in g_signal_stop_emission () from /usr/lib64/libgobject-2.0.so.0 #22 0x0000003108818e54 in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0 #23 0x00000031088194d2 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0 #24 0x000000310a5d8328 in gtk_widget_activate () from /usr/lib64/libgtk-x11-2.0.so.0 #25 0x000000310a50cf3c in gtk_main_do_event () from /usr/lib64/libgtk-x11-2.0.so.0 #26 0x0000003109842951 in gdk_screen_get_setting () from /usr/lib64/libgdk-x11-2.0.so.0 #27 0x0000003108625dae in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #28 0x0000003108628a64 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0 #29 0x0000003108628f50 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0 #30 0x000000310a50c4aa in gtk_main () from /usr/lib64/libgtk-x11-2.0.so.0 #31 0x000000000041ef9e in main ()
Here is a valgrind output with gedit. The crash occurs when switching to SCIM in the IM menu on Button3. This is with scim built configured with --enable-ld-version-script. The scim version is 1.4.2-5, scim-pinyin version is 0.5.91-2. ----------------------------------------------------------------- [root@localhost gedit]# valgrind --leak-check=yes gedit ==3529== Memcheck, a memory error detector. ==3529== Copyright (C) 2002-2005, and GNU GPL'd, by Julian Seward et al. ==3529== Using LibVEX rev 1367, a library for dynamic binary translation. ==3529== Copyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP. ==3529== Using valgrind-3.0.1, a dynamic binary instrumentation framework. ==3529== Copyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al. ==3529== For more details, rerun with: -v ==3529== ==3529== Syscall param write(buf) points to uninitialised byte(s) ==3529== at 0x1C461143: __write_nocancel (in /lib/libpthread-2.3.90.so) ==3529== by 0x1C5E420D: (within /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C5E442B: _X11TransWrite (in /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C5C978A: (within /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C5C98A5: _XReply (in /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C5B5924: XInternAtom (in /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C5D2208: XSetWMProperties (in /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C25CA0B: (within /usr/lib/libgdk-x11-2.0.so.0.800.6) ==3529== by 0x1C25F59E: gdk_window_new (in /usr/lib/libgdk-x11-2.0.so.0.800.6 ) ==3529== by 0x1C23F279: gdk_display_open (in /usr/lib/libgdk-x11-2.0.so.0.800 6) ==3529== by 0x1C220893: gdk_display_open_default_libgtk_only (in /usr/lib/lib gdk-x11-2.0.so.0.800.6) ==3529== by 0x1C0124B6: gtk_init_check (in /usr/lib/libgtk-x11-2.0.so.0.800.6 ) ==3529== Address 0x1CC8B470 is 128 bytes inside a block of size 16384 alloc'd ==3529== at 0x1B904AD4: calloc (vg_replace_malloc.c:279) ==3529== by 0x1C5B9D59: XOpenDisplay (in /usr/X11R6/lib/libX11.so.6.2) ==3529== by 0x1C23F19D: gdk_display_open (in /usr/lib/libgdk-x11-2.0.so.0.800 6) ==3529== by 0x1C220893: gdk_display_open_default_libgtk_only (in /usr/lib/lib gdk-x11-2.0.so.0.800.6) ==3529== by 0x1C0124B6: gtk_init_check (in /usr/lib/libgtk-x11-2.0.so.0.800.6 ) ==3529== by 0x1C0124E9: gtk_init (in /usr/lib/libgtk-x11-2.0.so.0.800.6) ==3529== by 0x1BAE0CDD: (within /usr/lib/libbonoboui-2.so.0.0.0) ==3529== by 0x1BB3B875: gnome_program_postinit (in /usr/lib/libgnome-2.so.0.1200.0) ==3529== by 0x1BB3C216: (within /usr/lib/libgnome-2.so.0.1200.0) ==3529== by 0x1BB3C523: gnome_program_init (in /usr/lib/libgnome-2.so.0.1200.0) ==3529== by 0x806096D: main (in /usr/bin/gedit) ==3529== ==3529== Syscall param write(buf) points to uninitialised byte(s) ==3529== at 0x1C461143: __write_nocancel (in /lib/libpthread-2.3.90.so) ==3529== by 0x1BA943A0: (within /usr/X11R6/lib/libICE.so.6.3) ==3529== by 0x1BA945B0: _IceTransWrite (in /usr/X11R6/lib/libICE.so.6.3) ==3529== by 0x1BA8D4C6: _IceWrite (in /usr/X11R6/lib/libICE.so.6.3) ==3529== by 0x1BA8D59F: IceFlush (in /usr/X11R6/lib/libICE.so.6.3) ==3529== by 0x1BA7E94F: SmcSetProperties (in /usr/X11R6/lib/libSM.so.6.0) ==3529== by 0x1BA11864: (within /usr/lib/libgnomeui-2.so.0.1200.0) ==3529== by 0x1BA1243B: (within /usr/lib/libgnomeui-2.so.0.1200.0) ==3529== by 0x1BA14D42: (within /usr/lib/libgnomeui-2.so.0.1200.0) ==3529== by 0x1C39239D: g_cclosure_marshal_VOID__BOOLEAN (in /usr/lib/libgobject-2.0 .so.0.800.3) ==3529== by 0x1C3865A4: (within /usr/lib/libgobject-2.0.so.0.800.3) ==3529== by 0x1C386BD7: g_closure_invoke (in /usr/lib/libgobject-2.0.so.0.800.3) ==3529== Address 0x1CCBAA94 is 12 bytes inside a block of size 1024 alloc'd ==3529== at 0x1B904AD4: calloc (vg_replace_malloc.c:279) ==3529== by 0x1BA8A6C7: IceOpenConnection (in /usr/X11R6/lib/libICE.so.6.3) ==3529== by 0x1BA7EC27: SmcOpenConnection (in /usr/X11R6/lib/libSM.so.6.0) ==3529== by 0x1BA13676: gnome_client_connect (in /usr/lib/libgnomeui-2.so.0.1200.0) ==3529== by 0x1BA137F7: (within /usr/lib/libgnomeui-2.so.0.1200.0) ==3529== by 0x1BB3B875: gnome_program_postinit (in /usr/lib/libgnome-2.so.0.1200.0) ==3529== by 0x1BB3C216: (within /usr/lib/libgnome-2.so.0.1200.0) ==3529== by 0x1BB3C523: gnome_program_init (in /usr/lib/libgnome-2.so.0.1200.0) ==3529== by 0x806096D: main (in /usr/bin/gedit) ==3529== ==3529== Syscall param writev(vector[...]) points to uninitialised byte(s) ==3529== at 0x1C52C8FC: writev (in /lib/libc-2.3.90.so) ==3529== by 0x1BC90BC7: (within /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC90F37: link_connection_writev (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC7306B: giop_send_buffer_write (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC7740B: (within /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC77BDA: ORBit_small_invoke_stub (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC77DC5: ORBit_small_invoke_stub_n (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC887F8: ORBit_c_stub_invoke (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC3403E: ConfigServer_ping (in /usr/lib/libgconf-2.so.4.1.0) ==3529== by 0x1BC1C821: gconf_activate_server (in /usr/lib/libgconf-2.so.4.1.0) ==3529== by 0x1BC27CA8: (within /usr/lib/libgconf-2.so.4.1.0) ==3529== by 0x1BC28766: (within /usr/lib/libgconf-2.so.4.1.0) ==3529== Address 0x1CCCCC02 is 10 bytes inside a block of size 2048 alloc'd ==3529== at 0x1B9037F2: malloc (vg_replace_malloc.c:149) ==3529== by 0x1C3EE4CF: g_malloc (in /usr/lib/libglib-2.0.so.0.800.3) ==3529== by 0x1BC72FBD: (within /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC73395: (within /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC73737: giop_send_buffer_use_request (in /usr/lib/libORBit-2.so.0.0. 0) ==3529== by 0x1BC77364: (within /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC77BDA: ORBit_small_invoke_stub (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC77DC5: ORBit_small_invoke_stub_n (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC887F8: ORBit_c_stub_invoke (in /usr/lib/libORBit-2.so.0.0.0) ==3529== by 0x1BC3403E: ConfigServer_ping (in /usr/lib/libgconf-2.so.4.1.0) ==3529== by 0x1BC1C821: gconf_activate_server (in /usr/lib/libgconf-2.so.4.1.0) ==3529== by 0x1BC27CA8: (within /usr/lib/libgconf-2.so.4.1.0) Launching a SCIM daemon with Socket FrontEnd... Loading simple Config module ... Creating backend ... ==3529== ==3529== Syscall param open(filename) points to unaddressable byte(s) ==3529== at 0x1C525383: __open_nocancel (in /lib/libc-2.3.90.so) ==3529== by 0x1C4C76AA: _IO_file_open (in /lib/libc-2.3.90.so) ==3529== by 0x1C4C7845: _IO_file_fopen@@GLIBC_2.1 (in /lib/libc-2.3.90.so) ==3529== by 0x1C4BEDA6: __fopen_internal (in /lib/libc-2.3.90.so) ==3529== by 0x1C4C1137: fopen64 (in /lib/libc-2.3.90.so) ==3529== by 0x1D3144D5: std::__basic_file<char>::open(char const*, std::_Ios_Openmod e, int) (in /usr/lib/libstdc++.so.6.0.6) ==3529== by 0x1D2C225F: std::basic_filebuf<char, std::char_traits<char> >>::open(char const*, std::_Ios_Openmode) (in /usr/lib/libstdc++.so.6.0.6) ==3529== by 0x219DAB7F: PhraseLib::load_lib(char const*) (in /usr/lib/scim-1.0/IMEng ine/pinyin.so) ==3529== by 0x219DAE49: PhraseLib::PhraseLib(char const*) (in /usr/lib/scim-1.0/IMEn gine/pinyin.so) ==3529== by 0x219E4379: PinyinPhraseLib::PinyinPhraseLib(PinyinCustomSettings const& , PinyinValidator const*, PinyinTable*, char const*, char const*, char const*) (in /usr /lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219EE6DB: PinyinGlobal::PinyinGlobal() (in /usr/lib/scim-1.0/IMEngine/ pinyin.so) ==3529== by 0x219BB220: PinyinFactory::PinyinFactory(scim::Pointer<scim::ConfigBase> const&) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==3529== ==3529== Invalid read of size 4 ==3529== at 0x219D31AF: __gnu_cxx::__mt_alloc<std::pair<wchar_t, unsigned>, __gnu_cx x::__common_pool_policy<__gnu_cxx::__pool, true> >::allocate(unsigned, void const*) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219D3A3D: std::vector<std::pair<wchar_t, unsigned>, std::allocator<std ::pair<wchar_t, unsigned> > >>::vector(std::vector<std::pair<wchar_t, unsigned>, std::al locator<std::pair<wchar_t, unsigned> > > const&) (in /usr/lib/scim-1.0/IMEngine/pinyin. so) ==3529== by 0x219CD260: PinyinEntry::input_binary(PinyinValidator const&, std::istre am&) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219CD9EC: PinyinTable::input(std::istream&) (in /usr/lib/scim-1.0/IMEn gine/pinyin.so) ==3529== by 0x219EEEC3: PinyinGlobal::load_pinyin_table(std::istream&, std::istream& ) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219EF2AD: PinyinGlobal::load_pinyin_table(char const*, char const*) (i n /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219B9BAA: PinyinFactory::init() (in /usr/lib/scim-1.0/IMEngine/pinyin. so) ==3529== by 0x219BB452: PinyinFactory::PinyinFactory(scim::Pointer<scim::ConfigBase> const&) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219BB795: pinyin_LTX_scim_imengine_module_create_factory (in /usr/lib/ scim-1.0/IMEngine/pinyin.so) ==3529== by 0x21910CB9: scim::IMEngineModule::create_factory(unsigned) const (in /us r/lib/libscim-1.0.so.8.1.0) ==3529== by 0x218E3F5C: scim::CommonBackEnd::CommonBackEnd(scim::Pointer<scim::Confi gBase> const&, std::vector<std::string, std::allocator<std::string> > const&) (in /usr/ lib/libscim-1.0.so.8.1.0) ==3529== by 0x2187CCD2: (within /usr/lib/gtk-2.0/immodules/im-scim.so) ==3529== Address 0x1CC59098 is 0 bytes after a block of size 0 alloc'd ==3529== at 0x1B903B8E: operator new(unsigned) (vg_replace_malloc.c:164) ==3529== by 0x1D2AC1F6: __gnu_cxx::__pool<true>::_M_initialize() (in /usr/lib/libstd c++.so.6.0.6) ==3529== by 0x219C854A: __gnu_cxx::__common_pool_base<__gnu_cxx::__pool, true>::_S_i nitialize() (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x1C45F9DA: pthread_once (in /lib/libpthread-2.3.90.so) ==3529== by 0x219D32DC: __gnu_cxx::__mt_alloc<std::pair<wchar_t, unsigned>, __gnu_cx x::__common_pool_policy<__gnu_cxx::__pool, true> >::allocate(unsigned, void const*) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219D3712: std::vector<std::pair<wchar_t, unsigned>, std::allocator<std ::pair<wchar_t, unsigned> > >::reserve(unsigned) (in /usr/lib/scim-1.0/IMEngine/pinyin. so) ==3529== by 0x219CD1FF: PinyinEntry::input_binary(PinyinValidator const&, std::istre am&) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219CD9EC: PinyinTable::input(std::istream&) (in /usr/lib/scim-1.0/IMEn gine/pinyin.so) ==3529== by 0x219EEE89: PinyinGlobal::load_pinyin_table(std::istream&, std::istream& ) (in /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219EF2AD: PinyinGlobal::load_pinyin_table(char const*, char const*) (i n /usr/lib/scim-1.0/IMEngine/pinyin.so) ==3529== by 0x219B9BAA: PinyinFactory::init() (in /usr/lib/scim-1.0/IMEngine/pinyin. so) ==3529== by 0x219BB452: PinyinFactory::PinyinFactory(scim::Pointer<scim::ConfigBase> const&) (in /usr/lib/scim-1.0/IMEngine/pinyin.so)
Here's how I was told to reproduce. Anyway it is pretty easy to reproduce: 1. checkout scim from package cvs, or we can provide you with an srpm say if you prefer. 2. move the commented out "--enable-ld-version-script" to the %configure line. 3. build scim. 4. install built scim package. 5. install say scim-pinyin. 6. start a new desktop session in English locale say. 7. start gedit say. 8. button3 menu -> Input Method -> scim 9. watch gedit crash. If you have any questions or if there is any way we can help please don't hesitate to ask. :) Jens
Created attachment 120441 [details] force default visibility for mt_alloc pools
I use the patch above to rebuild gcc, then rebuid scim and scim-pinyin with "--enable-ld-version-script", but gedit still crash. The os version is rawhide 20051014, gcc package is from cvs in devel section.
The above patch is not useful toward solving this problem. Benjamin later determined that versioning weak symbols in libstdc++ is the proper and elegant solution to solve this problem. Unfortunately it will take a while to implement. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24660
To be clear, we really have two separate issues in FC4+ affecting us. 1) The above issue where we need versioning of weak symbols in libstdc++ to solve. Benjamin describes this as an elegant solution to the problem and there is strong confidence that this will work. It is only a matter of resource allocation and schedules to work on it. 2) The crashing issue is due to the use of two different allocators. This will be solved before FC5test2 with gcc-4.1 by reverting back to the previous libstdc++ allocator used in RHEL4.
Right. (2) has been split out into bug 173220.
NOTE: Please keep all communication regarding libstdc++7 private. http://porkchop.redhat.com/beehive/comps/playpen/fc5/libstdc++so7/ First packaged attempt of libstdc++7. The -devel package includes the libstdc++so7-g++ wrapper which you use instead of g++ if you want to build or link a C++ application against this library. I attempted to build scim and scim-anthy with this procedure: 1) export CXX=libstdc++so7-g++ before configure and make. 2) Remove --enable-ld-version-script The end result had /usr/lib/gtk-2.0/immodules/im-scim.so still linked to libstdc++.so.6 so I did something wrong. Further work is necessary in order to complete this. After scim and other scim plugins are fixed, Jakub said that special work must be taken in order to build scim-qt because some parts of it links against libstdc++.so.6 and the scim parts need libstdc++7. Here are some notes where he describes what is necessary. <jakub> warren: probably split the sources, so that there are some source files that are using KDE/Qt headers (and those are compiled with g++) <jakub> warren: then these files comunicate over a C API (well, it can be e.g. some C++ classes, but they must never contain any STL stuff) <jakub> warren: with other C++ files that use the SCIM headers and are compiled with libstdc++so7-g++ <jakub> warren: finally, the link line will be slighly complicated, as you need to link against both libstdc++'s <jakub> warren: guess something like libstdc++so7-g++ ... -shared ... `g++ $CXXFLAGS -print-file-name=libstdc++.so`
Status Update: ============== libstdc++so7 package and scim have been tested, and are now ready. scim-qtimm requires moderate hacking in order to work with the dual C++ ABI. scim-qtimm can be fixed later because it is far less important. libstdc++so7 is based on the libstdc++_7 C++ ABI which would be included in a yet undecided gcc release. The libstdc++_7 ABI adds the needed "weak symbol version" feature needed by this scim dual C++ requirement, in addition to other C++ feature benefits. Benjamin Kosnik wants libstdc++so7 in FC5 in order to satisfy the scim requirement and also expose libstdc++_7 to wide user testing. Because libstdc++_7 is pre-alpha, we will guarantee in documentation and release notes that the ABI and so-version (like libstdc++-20060125.so.7) will change in future updates. PackageListProcess has initiated and discussion currently ensues.
libstdc++so7 has been included in dist-fc5 and scim updated and rebuilt against it.
Bug #182177 has been filed to deal with the scim-qtimm NEEDSWORK issue.
I'd consider this to be done. Work continues in Bug #182117 for scim-qtimm and elsewhere to possibly rewrite gtkimmodule in order to get rid of this libstdc++so7 entire, but otherwise we're in good shape.
Update for Historical Purposes ============================== Bug #185693 is where the gtkimmodule was rewritten in C with an abstraction over a socket, thereby solving this C++ conflict problem. Thanks to Ryo Dairiki for his great efforts in writing scim-bridge.
*** Bug 217865 has been marked as a duplicate of this bug. ***