On 04/15/2011 04:08 PM, Thomas Klausner wrote: > On Fri, Apr 15, 2011 at 01:42:00PM +0700, Dan Kennedy wrote: >> Are there any other threads in the process? > > My program is not using threads. > sqlite3 is linked against libpthread. I don't think it's using threads > (you probably know that better) but the c library behaves differently > when libpthread is linked. > >> Try attaching [gdb] to the running process: >> >> gdb<path-to-sqlite3> <pid-of-running-process> >> >> Then run the [bt] command again. > > I recompiled with -g and ran it again, now sqlite3 is consistenly > dumping core. > I stepped through it line by line, but: > open_db (p=<value optimized out>) at shell.c:1389 > 1389 sqlite3_enable_load_extension(p->db, 1); > (gdb) > 0x0000000000401d20 in sqlite3_enable_load_extension@plt () > (gdb) > Single stepping until exit from function > sqlite3_enable_load_extension@plt, > which has no line number information. > 0x0000000000401ba0 in ?? () > (gdb) > Cannot find bounds of current function > (gdb) c > Continuing. > > Program received signal SIGSEGV, Segmentation fault. > __pollts50 (fds=0x4, nfds=4152832323, ts=0x7f7ff7873143, > sigmask=<value optimized out>) at > /archive/cvs/src/lib/libpthread/pthread_cancelstub.c:424 > 424 /archive/cvs/src/lib/libpthread/pthread_cancelstub.c: No such > file or directory. > in /archive/cvs/src/lib/libpthread/pthread_cancelstub.c > (gdb) Quit > (gdb) bt > #0 __pollts50 (fds=0x4, nfds=4152832323, ts=0x7f7ff7873143, > sigmask=<value optimized out>) at > /archive/cvs/src/lib/libpthread/pthread_cancelstub.c:424 > #1 0x00007f7ff7ffba00 in ?? () > #2 0x0000000000000000 in ?? ()
How are you building sqlite3? Using configure/make from the sqlite-autoconf-3070601.tar.gz package on the website? Some other method? Can you post the output of the build process? Also, what is the output if you set a breakpoint in sqlite3_enable_load_extension() in the shell, then execute the following gdb commands? (gdb) p *db (gdb) p sqlite3Config Dan. > > I'm not sure how to get more debugging info :( > > Suggestions where I shall add printfs? :) > Thomas > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
