The C++ standard does specify order w/in a file (top down), but not across files. This fact can be used to order across files by using a global from one to initialize a global another. Don't recommend it, but it is nice when it is a must.
-- DM On Sep 11, 2013, at 12:56 PM, "Troy A. Griffitts" <scr...@crosswire.org> wrote: > Jaak, I disagree that your comments have anything to do with this problem. I > have confirmed that the 3 file globals immediately preceding the problem > global have been initialized. I doubt you are saying the c++ standard doesn't > support initializing a global array and then initializing a global std::list > with the members of this array, all in the same object file. I know the spec > doesn't assure global initialization order across object files, but within > the same object file, I find it hard to believe there is no specification to > the order. > > Jaak Ristioja <j...@ristioja.ee> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > It's not a compiler bug. > > Basically the C++ standard does not enforce an initialization order > for globals. So the compiler is free to initialize such stuff in any > order. I think your toolchain just happens to be lucky enough to do > that in an the order which doesn't yield in a crash. > > I don't have the time to look this up in the C++ standards myself, but > you can google such stuff: > > http://stackoverflow.com/questions/3746238/c-global-initialization-order-ignores-dependencies > > > Blessings, > Jaak > > On 10.09.2013 18:12, Troy A. Griffitts wrote: > Hey Jaak, > > Thank, yeah, but why? :) > > My investigation turns up: > > shared build works fine and valgrinds clean static build on g++ > (GCC) 4.8.1 (F19) fails static build on g++ (GCC) 4.4.7 (RHEL 6.4) > works fine and valgrinds clean > > In the error case, it seems that std::list's c-tor(iterator start, > iterator end) doesn't get called appropriately, though all the > other file globals get initialized just fine. > > I moved the global filter in the utility to a stack variable and > it alleviates the problem, but still wonder why the problem in the > first place. > > Any advice would be appreciated. If I'm doing something wrong, I'd > like to change it, but right now I'm going with "compiler bug" :) > > Troy > > > > > > On 09/10/2013 08:20 AM, Jaak Ristioja wrote: I'm pretty sure that > the crash is because the global > > const StringList oValues(&choices[0], &choices[2]); > > in ../src/modules/filters/utf8greekaccents.cpp:41 is not > initialized when it is used in UTF8GreekAccents::UTF8GreekAccents() > to initialize the global > > UTF8GreekAccents greekAccentsFilter; > > instance in imp2gbs.cpp:62. > > > Blessings, Jaak > > On 10.09.2013 02:02, Peter von Kaehne wrote: > I hate to bring this up, now, when we really all want 1.7 > out, but current svn head produces a segmentation fault in > imp2gbs. The other utilities insofar as I tested them seem to > be fine. > > Below the stacktrace. Tell me if you need more. I basically > use usrinst.sh produced binaries, with the only modification > that I changed the install directory to /usr/local/bin > > > > peter@peter-ThinkPad-Twist:~/Source/sword$ gdb > /usr/local/bin/imp2gbs GNU gdb (GDB) 7.5-ubuntu Copyright (C) > 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL > version 3 or later <http://gnu.org/licenses/gpl.html> This is > free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type > "show copying" and "show warranty" for details. This GDB was > configured as "i686-linux-gnu". For bug reporting > instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>... Reading symbols > from /usr/local/bin/imp2gbs...done. (gdb) r Starting > program: /usr/local/bin/imp2gbs > > Program received signal SIGSEGV, Segmentation fault. > 0x08050b7a in sword::SWBuf::c_str (this=0x8) at > ../include/swbuf.h:141 141 inline const char *c_str() const{ > return buf; } (gdb) bt #0 0x08050b7a in sword::SWBuf::c_str > (this=0x8) at ../include/swbuf.h:141 #1 0x0805a790 in > sword::SWOptionFilter::setOptionValue (this=0x8115b60 > <greekAccentsFilter>, ival=0x80c715b "On") at > ../src/modules/filters/swoptfilter.cpp:51 #2 0x0805aca2 in > sword::UTF8GreekAccents::UTF8GreekAccents (this=0x8115b60 > <greekAccentsFilter>, __in_chrg=<optimised out>, > __vtt_parm=<optimised out>) at > ../src/modules/filters/utf8greekaccents.cpp:43 #3 0x0805099d > in __static_initialization_and_destruction_0 > (__initialize_p=1, __priority=65535) at imp2gbs.cpp:62 #4 > 0x080509df in _GLOBAL__sub_I_imp2gbs.cpp(void) () at > imp2gbs.cpp:273 #5 0x080c6ae2 in __libc_csu_init () #6 > 0xb77f046a in __libc_start_main () from > /lib/i386-linux-gnu/libc.so.6 #7 0x0804f931 in _start () > (gdb) #0 0x08050b7a in sword::SWBuf::c_str (this=0x8) at > ../include/swbuf.h:141 #1 0x0805a790 in > sword::SWOptionFilter::setOptionValue (this=0x8115b60 > <greekAccentsFilter>, ival=0x80c715b "On") at > ../src/modules/filters/swoptfilter.cpp:51 #2 0x0805aca2 in > sword::UTF8GreekAccents::UTF8GreekAccents (this=0x8115b60 > <greekAccentsFilter>, __in_chrg=<optimised out>, > __vtt_parm=<optimised out>) at > ../src/modules/filters/utf8greekaccents.cpp:43 #3 0x0805099d > in __static_initialization_and_destruction_0 > (__initialize_p=1, __priority=65535) at imp2gbs.cpp:62 #4 > 0x080509df in _GLOBAL__sub_I_imp2gbs.cpp(void) () at > imp2gbs.cpp:273 #5 0x080c6ae2 in __libc_csu_init () #6 > 0xb77f046a in __libc_start_main () from > /lib/i386-linux-gnu/libc.so.6 #7 0x0804f931 in _start () > (gdb) #0 0x08050b7a in sword::SWBuf::c_str (this=0x8) at > ../include/swbuf.h:141 #1 0x0805a790 in > sword::SWOptionFilter::setOptionValue (this=0x8115b60 > <greekAccentsFilter>, ival=0x80c715b "On") at > ../src/modules/filters/swoptfilter.cpp:51 #2 0x0805aca2 in > sword::UTF8GreekAccents::UTF8GreekAccents (this=0x8115b60 > <greekAccentsFilter>, __in_chrg=<optimised out>, > __vtt_parm=<optimised out>) at > ../src/modules/filters/utf8greekaccents.cpp:43 #3 0x0805099d > in __static_initialization_and_destruction_0 > (__initialize_p=1, __priority=65535) at imp2gbs.cpp:62 #4 > 0x080509df in _GLOBAL__sub_I_imp2gbs.cpp(void) () at > imp2gbs.cpp:273 #5 0x080c6ae2 in __libc_csu_init () #6 > 0xb77f046a in __libc_start_main () from > /lib/i386-linux-gnu/libc.so.6 #7 0x0804f931 in _start () > (gdb) > > > > sword-devel > mailing list: sword-devel@crosswire.org > http://www.crosswire.org/mailman/listinfo/sword-devel > Instructions to unsubscribe/change your settings at above > page > > > sword-devel > mailing list: sword-devel@crosswire.org > http://www.crosswire.org/mailman/listinfo/sword-devel > Instructions to unsubscribe/change your settings at above page > > > sword-devel mailing > list: sword-devel@crosswire.org > http://www.crosswire.org/mailman/listinfo/sword-devel Instructions > to unsubscribe/change your settings at above page > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.20 (GNU/Linux) > > iQgcBAEBAgAGBQJSMHp7AAoJEEqsYmEt1rCOblpAAIfO/ypou3k0iGOmyo6xOay1 > zGDLP0d8zgGJ4qIT48nsFTEgrSdLukeIhl1QO4hhCevw4IY/r7+pH1gQYlqrhquP > 9esPk3SwUWn6oKVHD/7FTbDhap1EFtbsqyu273xV/08m9j/UROOSQAlWYPYmcsn1 > 5WLocCLrQO+RPNV0x2WuHkNXjm9R9ktqGrBDIQuCPArZehY6SVU5nsf+KdFMaNek > b1Esu+K8Qnyua77SI79K9Aj0s4HsSewrOYCe3TdiBqOKY9lJyHSdAuF3GiEIN2XZ > r/vegWmPRSuOXhLqFGXg5WDuGZcPCeeOCZy7AUmUCpDFRjtkcv+wH38vM9GLfdWb > TRlkiIoOIf7zA/IVwTNHqixQp4fmdyHftH3X9+9QKwvNFuVIG8VFhooIrfGIA7/q > YW1efT1FX6FImtJ+CPMLWvvAfQYKlV9NTQ4OBUR10QmCw32kvdvRipr/QevtCkxI > BIrVTjWjfnOi0coxbB9TTEWJqqG6zpIZGU08uHoVrH84kzf+7OQGoy52dITz72WR > wWwIOTuYWMXLOukym+4rviPRDnkFdG+7EeldN7+qQhm7/W8/aWy7vq8ucEjEwKCu > 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Please excuse my brevity. > _______________________________________________ > sword-devel mailing list: sword-devel@crosswire.org > http://www.crosswire.org/mailman/listinfo/sword-devel > Instructions to unsubscribe/change your settings at above page
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