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• Finding N contiguous zero bits in an integer to the left of the MSB position of another integer

  - by James Morris

  The problem is: given an integer val1 find the position of the highest bit set (Most Significant Bit) then, given a second integer val2 find a contiguous region of unset bits, with the minimum number of zero bits given by width to the left of the position (ie, in the higher bits). Here is the C code for my solution: typedef unsigned int t; unsigned const t_bits = sizeof(t) * CHAR_BIT; _Bool test_fit_within_left_of_msb( unsigned width, t val1, t val2, unsigned* offset_result) { unsigned offbit = 0; unsigned msb = 0; t mask; t b; while(val1 >>= 1) ++msb; while(offbit + width < t_bits - msb) { mask = (((t)1 << width) - 1) << (t_bits - width - offbit); b = val2 & mask; if (!b) { *offset_result = offbit; return true; } if (offbit++) /* this conditional bothers me! */ b <<= offbit - 1; while(b <<= 1) offbit++; } return false; } Aside from faster ways of finding the MSB of the first integer, the commented test for a zero offbit seems a bit extraneous, but necessary to skip the highest bit of type t if it is set. I have also implemented similar algorithms but working to the right of the MSB of the first number, so they don't require this seemingly extra condition. How can I get rid of this extra condition, or even, are there far more optimal solutions? Edit: Some background not strictly required. The offset result is a count of bits from the high bit, not from the low bit as maybe expected. This will be part of a wider algorithm which scans a 2D array for a 2D area of zero bits. Here, for testing, the algorithm has been simplified. val1 represents the first integer which does not have all bits set found in a row of the 2D array. From this the 2D version would scan down which is what val2 represents. Here's some output showing success and failure: t_bits:32 t_high: 10000000000000000000000000000000 ( 2147483648 ) --------- ----------------------------------- *** fit within left of msb test *** ----------------------------------- val1: 00000000000000000000000010000000 ( 128 ) val2: 01000001000100000000100100001001 ( 1091569929 ) msb: 7 offbit:0 + width: 8 = 8 mask: 11111111000000000000000000000000 ( 4278190080 ) b: 01000001000000000000000000000000 ( 1090519040 ) offbit:8 + width: 8 = 16 mask: 00000000111111110000000000000000 ( 16711680 ) b: 00000000000100000000000000000000 ( 1048576 ) offbit:12 + width: 8 = 20 mask: 00000000000011111111000000000000 ( 1044480 ) b: 00000000000000000000000000000000 ( 0 ) offbit:12 iters:10 ***** found room for width:8 at offset: 12 ***** ----------------------------------- *** fit within left of msb test *** ----------------------------------- val1: 00000000000000000000000001000000 ( 64 ) val2: 00010000000000001000010001000001 ( 268469313 ) msb: 6 offbit:0 + width: 13 = 13 mask: 11111111111110000000000000000000 ( 4294443008 ) b: 00010000000000000000000000000000 ( 268435456 ) offbit:4 + width: 13 = 17 mask: 00001111111111111000000000000000 ( 268402688 ) b: 00000000000000001000000000000000 ( 32768 ) ***** mask: 00001111111111111000000000000000 ( 268402688 ) offbit:17 iters:15 ***** no room found for width:13 ***** (iters is the count of iterations of the inner while loop)

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• kill unsigned / signed comparison error

  - by anon

  In general, I want warnings of unsigned vs signed. However, in this particular case, I want it supressed; std::vector<Blah> blahs; for(int i = 0; i < blahs.size(); ++i) { ... I want to kill this comparison. Thanks! (using g++)

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• storing in unsigned char array

  - by javierkeung

  Hello everyone, i got a question about unsigned char array. How can i store an integer in the array continually? thanks for your help!

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• C++ : integer constant is too large for its type

  - by user38586

  I need to bruteforce a year for an exercise. The compiler keep throwing this error: bruteforceJS12.cpp:8:28: warning: integer constant is too large for its type [enabled by default] My code is: #include <iostream> using namespace std; int main(){ unsigned long long year(0); unsigned long long result(318338237039211050000); unsigned long long pass(1337); while (pass != result) { for (unsigned long long i = 1; i<= year; i++) { pass += year * i * year; } cout << "pass not cracked with year = " << year << endl; ++year; } cout << "pass cracked with year = " << year << endl; } Note that I already tried with unsigned long long result(318338237039211050000ULL); I'm using gcc version 4.8.1 EDIT: Here is the corrected version using InfInt library http://code.google.com/p/infint/ #include <iostream> #include "InfInt.h" using namespace std; int main(){ InfInt year = "113"; InfInt result = "318338237039211050000"; InfInt pass= "1337"; while (pass != result) { for (InfInt i = 1; i<= year; i++) { pass += year * i * year; } cout << "year = " << year << " pass = " << pass << endl; ++year; } cout << "pass cracked with year = " << year << endl; }

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• Are C++ enums signed or unsigned?

  - by Matt

  Are C++ enums signed or unsigned? And by extension is it safe to validate an input by checking that it is <= your max value, and leave out = your min value (assuming you started at 0 and incremented by 1)?

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• mysqld crashes on any statement

  - by ??iu

  I restarted my slave to change configuration settings to skip reverse hostname lookup on connecting and to enable the slow query log. I edited /etc/my.cnf making only these changes, then restarted mysqld with /etc/init.d/mysql restart All appeared to be well but when I connect to msyqld remotely or locally though it connects okay a slight problem is that mysqld crashes whenever you try to issue any kind of statement. The client looks like: Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.1.31-1ubuntu2-log Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> show tables; ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... Connection id: 1 Current database: mydb ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... ERROR 2003 (HY000): Can't connect to MySQL server on 'xx.xx.xx.xx' (61) ERROR: Can't connect to the server ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... ERROR 2003 (HY000): Can't connect to MySQL server on 'xx.xx.xx.xx' (61) ERROR: Can't connect to the server ERROR 2006 (HY000): MySQL server has gone away Bus error The mysqld error log looks like: 101210 16:35:51 InnoDB: Error: (1500) Couldn't read the MAX(job_id) autoinc value from the index (PRIMARY). 101210 16:35:51 InnoDB: Assertion failure in thread 140245598570832 in file handler/ha_innodb.cc line 2595 InnoDB: Failing assertion: error == DB_SUCCESS InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-recovery.html InnoDB: about forcing recovery. 101210 16:35:51 - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=3 max_threads=600 threads_connected=3 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328077 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x18209220 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f8d791580d0 thread_stack 0x20000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x8b4f89] /usr/sbin/mysqld(handle_segfault+0x383) [0x5f8f03] /lib/libpthread.so.0 [0x7f902a76a080] /lib/libc.so.6(gsignal+0x35) [0x7f90291f8fb5] /lib/libc.so.6(abort+0x183) [0x7f90291fabc3] /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x41b) [0x781f4b] /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3f) [0x6db00f] /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x57a) [0x64760a] /usr/sbin/mysqld [0x63f281] /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x626) [0x641e16] /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x5db) [0x6429cb] /usr/sbin/mysqld(open_normal_and_derived_tables(THD*, TABLE_LIST*, unsigned int)+0x1e) [0x642b0e] /usr/sbin/mysqld(mysqld_list_fields(THD*, TABLE_LIST*, char const*)+0x22) [0x70b292] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x146d) [0x60dc1d] /usr/sbin/mysqld(do_command(THD*)+0xe8) [0x60dda8] /usr/sbin/mysqld(handle_one_connection+0x226) [0x601426] /lib/libpthread.so.0 [0x7f902a7623ba] /lib/libc.so.6(clone+0x6d) [0x7f90292abfcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x18213c70 = thd->thread_id=3 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 101210 16:35:51 mysqld_safe Number of processes running now: 0 101210 16:35:51 mysqld_safe mysqld restarted InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 101210 16:35:54 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 101210 16:35:56 InnoDB: Started; log sequence number 456 143528628 101210 16:35:56 [Warning] 'user' entry 'root@PSDB102' ignored in --skip-name-resolve mode. 101210 16:35:56 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=mysqld-relay-bin' to avoid this problem. 101210 16:35:56 [Note] Event Scheduler: Loaded 0 events 101210 16:35:56 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.31-1ubuntu2-log' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) 101210 16:36:11 InnoDB: Error: (1500) Couldn't read the MAX(job_id) autoinc value from the index (PRIMARY). 101210 16:36:11 InnoDB: Assertion failure in thread 139955151501648 in file handler/ha_innodb.cc line 2595 InnoDB: Failing assertion: error == DB_SUCCESS InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-recovery.html InnoDB: about forcing recovery. 101210 16:36:11 - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=1 max_threads=600 threads_connected=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328077 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x18588720 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f49d916f0d0 thread_stack 0x20000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x8b4f89] /usr/sbin/mysqld(handle_segfault+0x383) [0x5f8f03] /lib/libpthread.so.0 [0x7f4c8a73f080] /lib/libc.so.6(gsignal+0x35) [0x7f4c891cdfb5] /lib/libc.so.6(abort+0x183) [0x7f4c891cfbc3] /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x41b) [0x781f4b] /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3f) [0x6db00f] /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x57a) [0x64760a] /usr/sbin/mysqld [0x63f281] /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x626) [0x641e16] /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x5db) [0x6429cb] /usr/sbin/mysqld(open_normal_and_derived_tables(THD*, TABLE_LIST*, unsigned int)+0x1e) [0x642b0e] /usr/sbin/mysqld(mysqld_list_fields(THD*, TABLE_LIST*, char const*)+0x22) [0x70b292] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x146d) [0x60dc1d] /usr/sbin/mysqld(do_command(THD*)+0xe8) [0x60dda8] /usr/sbin/mysqld(handle_one_connection+0x226) [0x601426] /lib/libpthread.so.0 [0x7f4c8a7373ba] /lib/libc.so.6(clone+0x6d) [0x7f4c89280fcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x18599950 = thd->thread_id=1 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 101210 16:36:11 mysqld_safe Number of processes running now: 0 101210 16:36:11 mysqld_safe mysqld restarted The config is [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] innodb_file_per_table innodb_buffer_pool_size=10G innodb_log_buffer_size=4M innodb_flush_log_at_trx_commit=2 innodb_thread_concurrency=8 skip-slave-start server-id=3 # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /DB2/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. #bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 128K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 600 #table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 32M # skip-federated slow-query-log skip-name-resolve Update: I followed the instructions as per http://dev.mysql.com/doc/refman/5.1/en/forcing-innodb-recovery.html and set innodb_force_recovery = 4 and the logs are showing a different error but the behavior is still the same: 101210 19:14:15 mysqld_safe mysqld restarted 101210 19:14:19 InnoDB: Started; log sequence number 456 143528628 InnoDB: !!! innodb_force_recovery is set to 4 !!! 101210 19:14:19 [Warning] 'user' entry 'root@PSDB102' ignored in --skip-name-resolve mode. 101210 19:14:19 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=mysqld-relay-bin' to avoid this problem. 101210 19:14:19 [Note] Event Scheduler: Loaded 0 events 101210 19:14:19 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.31-1ubuntu2-log' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) 101210 19:14:32 InnoDB: error: space object of table mydb/__twitter_friend, InnoDB: space id 1602 did not exist in memory. Retrying an open. 101210 19:14:32 InnoDB: error: space object of table mydb/access_request, InnoDB: space id 1318 did not exist in memory. Retrying an open. 101210 19:14:32 InnoDB: error: space object of table mydb/activity, InnoDB: space id 1595 did not exist in memory. Retrying an open. 101210 19:14:32 - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=1 max_threads=600 threads_connected=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328077 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x1753c070 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f7a0b5800d0 thread_stack 0x20000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x8b4f89] /usr/sbin/mysqld(handle_segfault+0x383) [0x5f8f03] /lib/libpthread.so.0 [0x7f7cbc350080] /usr/sbin/mysqld(ha_innobase::innobase_get_index(unsigned int)+0x46) [0x77c516] /usr/sbin/mysqld(ha_innobase::innobase_initialize_autoinc()+0x40) [0x77c640] /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x3f3) [0x781f23] /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3f) [0x6db00f] /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x57a) [0x64760a] /usr/sbin/mysqld [0x63f281] /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x626) [0x641e16] /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x5db) [0x6429cb] /usr/sbin/mysqld(open_normal_and_derived_tables(THD*, TABLE_LIST*, unsigned int)+0x1e) [0x642b0e] /usr/sbin/mysqld(mysqld_list_fields(THD*, TABLE_LIST*, char const*)+0x22) [0x70b292] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x146d) [0x60dc1d] /usr/sbin/mysqld(do_command(THD*)+0xe8) [0x60dda8] /usr/sbin/mysqld(handle_one_connection+0x226) [0x601426] /lib/libpthread.so.0 [0x7f7cbc3483ba] /lib/libc.so.6(clone+0x6d) [0x7f7cbae91fcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x1754d690 = thd->thread_id=1 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash.

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• mysqld crashes on any statement

  - by ??iu

  I restarted my slave to change configuration settings to skip reverse hostname lookup on connecting and to enable the slow query log. I edited /etc/my.cnf making only these changes, then restarted mysqld with /etc/init.d/mysql restart All appeared to be well but when I connect to msyqld remotely or locally though it connects okay a slight problem is that mysqld crashes whenever you try to issue any kind of statement. The client looks like: Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.1.31-1ubuntu2-log Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> show tables; ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... Connection id: 1 Current database: mydb ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... ERROR 2003 (HY000): Can't connect to MySQL server on 'xx.xx.xx.xx' (61) ERROR: Can't connect to the server ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... ERROR 2003 (HY000): Can't connect to MySQL server on 'xx.xx.xx.xx' (61) ERROR: Can't connect to the server ERROR 2006 (HY000): MySQL server has gone away Bus error The mysqld error log looks like: 101210 16:35:51 InnoDB: Error: (1500) Couldn't read the MAX(job_id) autoinc value from the index (PRIMARY). 101210 16:35:51 InnoDB: Assertion failure in thread 140245598570832 in file handler/ha_innodb.cc line 2595 InnoDB: Failing assertion: error == DB_SUCCESS InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-recovery.html InnoDB: about forcing recovery. 101210 16:35:51 - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=3 max_threads=600 threads_connected=3 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328077 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x18209220 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f8d791580d0 thread_stack 0x20000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x8b4f89] /usr/sbin/mysqld(handle_segfault+0x383) [0x5f8f03] /lib/libpthread.so.0 [0x7f902a76a080] /lib/libc.so.6(gsignal+0x35) [0x7f90291f8fb5] /lib/libc.so.6(abort+0x183) [0x7f90291fabc3] /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x41b) [0x781f4b] /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3f) [0x6db00f] /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x57a) [0x64760a] /usr/sbin/mysqld [0x63f281] /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x626) [0x641e16] /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x5db) [0x6429cb] /usr/sbin/mysqld(open_normal_and_derived_tables(THD*, TABLE_LIST*, unsigned int)+0x1e) [0x642b0e] /usr/sbin/mysqld(mysqld_list_fields(THD*, TABLE_LIST*, char const*)+0x22) [0x70b292] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x146d) [0x60dc1d] /usr/sbin/mysqld(do_command(THD*)+0xe8) [0x60dda8] /usr/sbin/mysqld(handle_one_connection+0x226) [0x601426] /lib/libpthread.so.0 [0x7f902a7623ba] /lib/libc.so.6(clone+0x6d) [0x7f90292abfcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x18213c70 = thd->thread_id=3 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 101210 16:35:51 mysqld_safe Number of processes running now: 0 101210 16:35:51 mysqld_safe mysqld restarted InnoDB: The log sequence number in ibdata files does not match InnoDB: the log sequence number in the ib_logfiles! 101210 16:35:54 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 101210 16:35:56 InnoDB: Started; log sequence number 456 143528628 101210 16:35:56 [Warning] 'user' entry 'root@PSDB102' ignored in --skip-name-resolve mode. 101210 16:35:56 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=mysqld-relay-bin' to avoid this problem. 101210 16:35:56 [Note] Event Scheduler: Loaded 0 events 101210 16:35:56 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.31-1ubuntu2-log' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) 101210 16:36:11 InnoDB: Error: (1500) Couldn't read the MAX(job_id) autoinc value from the index (PRIMARY). 101210 16:36:11 InnoDB: Assertion failure in thread 139955151501648 in file handler/ha_innodb.cc line 2595 InnoDB: Failing assertion: error == DB_SUCCESS InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-recovery.html InnoDB: about forcing recovery. 101210 16:36:11 - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=1 max_threads=600 threads_connected=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328077 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x18588720 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f49d916f0d0 thread_stack 0x20000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x8b4f89] /usr/sbin/mysqld(handle_segfault+0x383) [0x5f8f03] /lib/libpthread.so.0 [0x7f4c8a73f080] /lib/libc.so.6(gsignal+0x35) [0x7f4c891cdfb5] /lib/libc.so.6(abort+0x183) [0x7f4c891cfbc3] /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x41b) [0x781f4b] /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3f) [0x6db00f] /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x57a) [0x64760a] /usr/sbin/mysqld [0x63f281] /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x626) [0x641e16] /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x5db) [0x6429cb] /usr/sbin/mysqld(open_normal_and_derived_tables(THD*, TABLE_LIST*, unsigned int)+0x1e) [0x642b0e] /usr/sbin/mysqld(mysqld_list_fields(THD*, TABLE_LIST*, char const*)+0x22) [0x70b292] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x146d) [0x60dc1d] /usr/sbin/mysqld(do_command(THD*)+0xe8) [0x60dda8] /usr/sbin/mysqld(handle_one_connection+0x226) [0x601426] /lib/libpthread.so.0 [0x7f4c8a7373ba] /lib/libc.so.6(clone+0x6d) [0x7f4c89280fcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x18599950 = thd->thread_id=1 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 101210 16:36:11 mysqld_safe Number of processes running now: 0 101210 16:36:11 mysqld_safe mysqld restarted The config is [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] innodb_file_per_table innodb_buffer_pool_size=10G innodb_log_buffer_size=4M innodb_flush_log_at_trx_commit=2 innodb_thread_concurrency=8 skip-slave-start server-id=3 # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /DB2/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. #bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 128K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 600 #table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 32M # skip-federated slow-query-log skip-name-resolve Update: I followed the instructions as per http://dev.mysql.com/doc/refman/5.1/en/forcing-innodb-recovery.html and set innodb_force_recovery = 4 and the logs are showing a different error but the behavior is still the same: 101210 19:14:15 mysqld_safe mysqld restarted 101210 19:14:19 InnoDB: Started; log sequence number 456 143528628 InnoDB: !!! innodb_force_recovery is set to 4 !!! 101210 19:14:19 [Warning] 'user' entry 'root@PSDB102' ignored in --skip-name-resolve mode. 101210 19:14:19 [Warning] Neither --relay-log nor --relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed!! Please use '--relay-log=mysqld-relay-bin' to avoid this problem. 101210 19:14:19 [Note] Event Scheduler: Loaded 0 events 101210 19:14:19 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.31-1ubuntu2-log' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu) 101210 19:14:32 InnoDB: error: space object of table mydb/__twitter_friend, InnoDB: space id 1602 did not exist in memory. Retrying an open. 101210 19:14:32 InnoDB: error: space object of table mydb/access_request, InnoDB: space id 1318 did not exist in memory. Retrying an open. 101210 19:14:32 InnoDB: error: space object of table mydb/activity, InnoDB: space id 1595 did not exist in memory. Retrying an open. 101210 19:14:32 - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=16777216 read_buffer_size=131072 max_used_connections=1 max_threads=600 threads_connected=1 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328077 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x1753c070 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f7a0b5800d0 thread_stack 0x20000 /usr/sbin/mysqld(my_print_stacktrace+0x29) [0x8b4f89] /usr/sbin/mysqld(handle_segfault+0x383) [0x5f8f03] /lib/libpthread.so.0 [0x7f7cbc350080] /usr/sbin/mysqld(ha_innobase::innobase_get_index(unsigned int)+0x46) [0x77c516] /usr/sbin/mysqld(ha_innobase::innobase_initialize_autoinc()+0x40) [0x77c640] /usr/sbin/mysqld(ha_innobase::open(char const*, int, unsigned int)+0x3f3) [0x781f23] /usr/sbin/mysqld(handler::ha_open(st_table*, char const*, int, int)+0x3f) [0x6db00f] /usr/sbin/mysqld(open_table_from_share(THD*, st_table_share*, char const*, unsigned int, unsigned int, unsigned int, st_table*, bool)+0x57a) [0x64760a] /usr/sbin/mysqld [0x63f281] /usr/sbin/mysqld(open_table(THD*, TABLE_LIST*, st_mem_root*, bool*, unsigned int)+0x626) [0x641e16] /usr/sbin/mysqld(open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int)+0x5db) [0x6429cb] /usr/sbin/mysqld(open_normal_and_derived_tables(THD*, TABLE_LIST*, unsigned int)+0x1e) [0x642b0e] /usr/sbin/mysqld(mysqld_list_fields(THD*, TABLE_LIST*, char const*)+0x22) [0x70b292] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x146d) [0x60dc1d] /usr/sbin/mysqld(do_command(THD*)+0xe8) [0x60dda8] /usr/sbin/mysqld(handle_one_connection+0x226) [0x601426] /lib/libpthread.so.0 [0x7f7cbc3483ba] /lib/libc.so.6(clone+0x6d) [0x7f7cbae91fcd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x1754d690 = thd->thread_id=1 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash.

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• pointer being freed was not allocated. Complex malloc history help

  - by Martin KS

  I've followed the guides helpfully linked here: http://stackoverflow.com/questions/295778/iphone-debugging-pointer-being-freed-was-not-allocated-errors but the malloc_history is really throwing me for a loop, can anyone shed any light on the following: ALLOC 0x185c600-0x18605ff [size=16384]: thread_a068a4e0 |start | main | UIApplicationMain | -[UIApplication _run] | CFRunLoopRunInMode | CFRunLoopRunSpecific | PurpleEventCallback | _UIApplicationHandleEvent | -[UIApplication sendEvent:] | -[UIApplication handleEvent:withNewEvent:] | -[UIApplication _reportAppLaunchFinished] | CA::Transaction::commit() | CA::Context::commit_transaction(CA::Transaction*) | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CA::Context::commit_layer(_CALayer*, unsigned int, unsigned int, void*) | CA::Render::encode_set_object(CA::Render::Encoder*, unsigned long, unsigned int, CA::Render::Object*, unsigned int) | CA::Render::Layer::encode(CA::Render::Encoder*) const | CA::Render::Image::encode(CA::Render::Encoder*) const | CA::Render::Encoder::encode_data_async(void const*, unsigned long, void (*)(void const*, void*), void*) | CA::Render::Encoder::encode_bytes(void const*, unsigned long) | CA::Render::Encoder::grow(unsigned long) | realloc | malloc_zone_realloc ---- FREE 0x185c600-0x18605ff [size=16384]: thread_a068a4e0 |start | main | UIApplicationMain | -[UIApplication _run] | CFRunLoopRunInMode | CFRunLoopRunSpecific | PurpleEventCallback | _UIApplicationHandleEvent | -[UIApplication sendEvent:] | -[UIApplication handleEvent:withNewEvent:] | -[UIApplication _reportAppLaunchFinished] | CA::Transaction::commit() | CA::Context::commit_transaction(CA::Transaction*) | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CALayerCommitIfNeeded | CA::Context::commit_layer(_CALayer*, unsigned int, unsigned int, void*) | CA::Render::encode_set_object(CA::Render::Encoder*, unsigned long, unsigned int, CA::Render::Object*, unsigned int) | CA::Render::Layer::encode(CA::Render::Encoder*) const | CA::Render::Image::encode(CA::Render::Encoder*) const | CA::Render::Encoder::encode_data_async(void const*, unsigned long, void (*)(void const*, void*), void*) | CA::Render::Encoder::encode_bytes(void const*, unsigned long) | CA::Render::Encoder::grow(unsigned long) | realloc | malloc_zone_realloc ALLOC 0x185e000-0x185e62f [size=1584]: thread_a068a4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[UITableView _userSelectRowAtIndexPath:] | -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] | -[PLAlbumView tableView:didSelectRowAtIndexPath:] | -[PLUIAlbumViewController albumView:selectedPhoto:] | PLNotifyImagePickerOfImageAvailability | -[UIImagePickerController _imagePickerDidCompleteWithInfo:] | -[GalleryViewController imagePickerController:didFinishPickingMediaWithInfo:] | UIImageJPEGRepresentation | CGImageDestinationFinalize | _CGImagePluginWriteJPEG | writeOne | _cg_jpeg_start_compress | _cg_jinit_compress_master | _cg_jinit_c_prep_controller | alloc_sarray | alloc_large | malloc | malloc_zone_malloc ---- FREE 0x185e000-0x185e62f [size=1584]: thread_a068a4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[UITableView _userSelectRowAtIndexPath:] | -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] | -[PL AlbumView tableView:didSelectRowAtIndexPath:] | -[PLUIAlbumViewController albumView:selectedPhoto:] | PLNotifyImagePickerOfImageAvailability | -[UIImagePickerController _imagePickerDidCompleteWithInfo:] | -[GalleryViewController imagePickerController:didFinishPickingMediaWithInfo:] | UIImageJPEGRepresentation | CGImageDestinationFinalize | _CGImagePluginWriteJPEG | writeOne | _cg_jpeg_abort | free_pool | free ALLOC 0x185c800-0x185ea1f [size=8736]: thread_a068a4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[UITableView _userSelectRowAtIndexPath:] | -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] | -[PLAlbumView tableView:didSelectRowAtIndexPath:] | -[PLUIAlbumViewController albumView:selectedPhoto:] | PLNotifyImagePickerOfImageAvailability | -[UIImagePickerController _imagePickerDidCompleteWithInfo:] | -[GalleryViewController imagePickerController:didFinishPickingMediaWithInfo:] | -[UIImage initWithData:] | _UIImageRefFromData | CGImageSourceCreateImageAtIndex | makeImagePlus | _CGImagePluginInitJPEG | initImageJPEG | calloc | malloc_zone_calloc

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• How to create static method that evaluates local static variable once?

  - by Viet

  I have a class with static method which has a local static variable. I want that variable to be computed/evaluated once (the 1st time I call the function) and for any subsequent invocation, it is not evaluated anymore. How to do that? Here's my class: template< typename T1 = int, unsigned N1 = 1, typename T2 = int, unsigned N2 = 0, typename T3 = int, unsigned N3 = 0, typename T4 = int, unsigned N4 = 0, typename T5 = int, unsigned N5 = 0, typename T6 = int, unsigned N6 = 0, typename T7 = int, unsigned N7 = 0, typename T8 = int, unsigned N8 = 0, typename T9 = int, unsigned N9 = 0, typename T10 = int, unsigned N10 = 0, typename T11 = int, unsigned N11 = 0, typename T12 = int, unsigned N12 = 0, typename T13 = int, unsigned N13 = 0, typename T14 = int, unsigned N14 = 0, typename T15 = int, unsigned N15 = 0, typename T16 = int, unsigned N16 = 0> struct GroupAlloc { static const uint32_t sizeClass; static uint32_t getSize() { static uint32_t totalSize = 0; totalSize += sizeof(T1)*N1; totalSize += sizeof(T2)*N2; totalSize += sizeof(T3)*N3; totalSize += sizeof(T4)*N4; totalSize += sizeof(T5)*N5; totalSize += sizeof(T6)*N6; totalSize += sizeof(T7)*N7; totalSize += sizeof(T8)*N8; totalSize += sizeof(T9)*N9; totalSize += sizeof(T10)*N10; totalSize += sizeof(T11)*N11; totalSize += sizeof(T12)*N12; totalSize += sizeof(T13)*N13; totalSize += sizeof(T14)*N14; totalSize += sizeof(T15)*N15; totalSize += sizeof(T16)*N16; totalSize = 8*((totalSize + 7)/8); return totalSize; } };

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• no default constructor exists for class

  - by MixedCoder

  #include "Includes.h" enum BlowfishAlgorithm { ECB, CBC, CFB64, OFB64, }; class Blowfish { public: struct bf_key_st { unsigned long P[18]; unsigned long S[1024]; }; Blowfish(BlowfishAlgorithm algorithm); void Dispose(); void SetKey(unsigned char data[]); unsigned char Encrypt(unsigned char buffer[]); unsigned char Decrypt(unsigned char buffer[]); char EncryptIV(); char DecryptIV(); private: BlowfishAlgorithm _algorithm; unsigned char _encryptIv[200]; unsigned char _decryptIv[200]; int _encryptNum; int _decryptNum; }; class GameCryptography { public: Blowfish _blowfish; GameCryptography(unsigned char key[]); void Decrypt(unsigned char packet[]); void Encrypt(unsigned char packet[]); Blowfish Blowfish; void SetKey(unsigned char k[]); void SetIvs(unsigned char i1[],unsigned char i2[]); }; GameCryptography::GameCryptography(unsigned char key[]) { } Error:IntelliSense: no default constructor exists for class "Blowfish" ???!

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• CVE-2006-3744 Multiple Integer overflow vulnerabilities in ImageMagick

  - by chandan

  CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2006-3744 Numeric Errors vulnerability 5.1 ImageMagick Solaris 10 SPARC: 136882-03 X86: 136883-03 This notification describes vulnerabilities fixed in third-party components that are included in Sun's product distribution.Information about vulnerabilities affecting Oracle Sun products can be found on Oracle Critical Patch Updates and Security Alerts page.

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• Java default Integer value is int

  - by Chris Okyen

  My code looks like this import java.util.Scanner; public class StudentGrades { public static void main(String[] argv) { Scanner keyboard = new Scanner(System.in); byte q1 = keyboard.nextByte() * 10; } } It gives me an error "Type mismatch: cannot convert from int to byte." Why the heck would Java store a literal operand that is small enough to fit in a byte,. into a int type? Do literals get stored in variables/registers before the ALU performs arithmatic operations.

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• Getting RGB values for each pixel from a 24bpp Bitmap in C

  - by seven

  Hello, i want to read the RGB values for each pixel from a .bmp file , so i can convert the bmp into a format suitable for gba . so i need to get just the RGB for each pixel and then write this information to a file. i am trying to use the windows.h structures : typedef struct { char signature[2]; unsigned int fileSize; unsigned int reserved; unsigned int offset; }BmpHeader; typedef struct { unsigned int headerSize; unsigned int width; unsigned int height; unsigned short planeCount; unsigned short bitDepth; unsigned int compression; unsigned int compressedImageSize; unsigned int horizontalResolution; unsigned int verticalResolution; unsigned int numColors; unsigned int importantColors; }BmpImageInfo; typedef struct { unsigned char blue; unsigned char green; unsigned char red; unsigned char reserved; }Rgb; typedef struct { BmpHeader header; BmpImageInfo info; Rgb colors[256]; unsigned short image[1]; }BmpFile; but i only need RGB struct. So lets say i read "in.bmp": FILE *inFile, *outFile; inFile = fopen("C://in.bmp", "rb"); Rgb Palette[256]; for(i=0;i<256;i++) { fread(&Palette[i],sizeof(Rgb),1,inFile); } fclose(inFile); is this correct ? how do i write only the RGB information to a file ? can anyone please give me some information please . Thank you.

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• howto parse struct to C++ dll from C#

  - by Nerds Rule

  I am trying to call a function in a unmanaged C++ dll. It has this prototype: [DllImport("C:\\Program Files\\MySDK\\VSeries.dll", EntryPoint = "BII_Send_Index_Template_MT" )] internal unsafe static extern Int32 BII_Send_Index_Template_MT(IntPtr pUnitHandle, ref BII_Template template, Int32 option, Boolean async); BII_Template template = new BII_Template(); error_code = BII_Send_Index_Template_MT(pUnitHandle, ref template, option, false); I is how I define the BII_Template struct in C#: public unsafe struct BII_Template { public ulong id; public ulong employee_id; public ulong password; public byte sensor_version; public byte template_version; public fixed char name[16]; public byte finger; public byte admin_level; public byte schedule; public byte security_thresh; public fixed byte noise_level[18]; public byte corramb; public byte reference_x; public byte reference_y; public fixed byte ihcore[3]; public fixed byte ivcore[3]; public byte temp_xoffset; public byte temp_yoffset; public byte index; public fixed byte inphase[5500]; }; It build and when I run it the dll return error_code = "The record checksum is invalid." I assume that I am using the ref keyword in a wrong way or the size of some of the elements in the struct is wrong. ----- EDIT ------------ Here is the struct in C++: typedef struct { unsigned long id; unsigned long employee_id; unsigned long password; unsigned char sensor_version; unsigned char template_version; char name[16]; unsigned char finger; unsigned char admin_level; unsigned char schedule; unsigned char security_thresh; unsigned char noise_level[18]; unsigned char corramb ; unsigned char reference_x ; unsigned char reference_y ; unsigned char ihcore[NUM_CORE]; unsigned char ivcore[NUM_CORE]; unsigned char temp_xoffset; unsigned char temp_yoffset; unsigned char index; unsigned char inphase[PACKED_ARRAY_SIZE]; } BII_Template;

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• Signing an unsigned assembly

  - by dagda1

  The recent upgrade of NHibernate 2.1 has brought a mega headache situation to the surface. It seems most of the projects build by default as signed assemblies. For example fluentnhibernate references the keyfile fluent.snk. Nhibernate.search builds unsigned from what I can gather and will not build signed that is if you reference a generated keyfile, you get the error: Referenced assembly 'Lucene.Net' does not have a strong name This means projects like castle.activerecord that have nhibernate.search as a dependency will not build as you get the horrendous error referenced assembly nhibernate.search does not have a strong name: Quite a few projects use caslte.activerecord so it is quite important that this builds. Has anyone any idea what to do here as I am totally out of ideas? This is complete madness.

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• How can i convert a string into byte[] of unsigned int 32 C#

  - by Miroo

  i have string like "0x5D, 0x50, 0x68, 0xBE, 0xC9, 0xB3, 0x84, 0xFF" i wanna convert it into byte[] key= new byte[] { 0x5D, 0x50, 0x68, 0xBE, 0xC9, 0xB3, 0x84, 0xFF}; i thought about splitting the string by ',' then loop on it and setvalue into another byte[] in index of i string Key = "0x5D, 0x50, 0x68, 0xBE, 0xC9, 0xB3, 0x84, 0xFF"; string[] arr = Key.Split(','); byte[] keybyte= new byte[8]; for (int i = 0; i < arr.Length; i++) { keybyte.SetValue(Int32.Parse(arr[i].ToString()), i); } but seems like it doesn't work i get error in converting the string into unsigned int32 on the first beginning an help would be appreciated

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• C# - How to convert 10 bytes to unsigned long

  - by Justin

  Hey, I have 10 bytes - 4 bytes of low order, 4 bytes of high order, 2 bytes of highest order - that I need to convert to an unsigned long. I've tried a couple different methods but neither of them worked: Try #1: var id = BitConverter.ToUInt64(buffer, 0); Try #2: var id = GetID(buffer, 0); long GetID(byte[] buffer, int startIndex) { var lowOrderUnitId = BitConverter.ToUInt32(buffer, startIndex); var highOrderUnitId = BitConverter.ToUInt32(buffer, startIndex + 4); var highestOrderUnitId = BitConverter.ToUInt16(buffer, startIndex + 8); return lowOrderUnitId + (highOrderUnitId * 100000000) + (highestOrderUnitId * 10000000000000000); } Any help would be appreciated, thanks!

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• How to pass a const unsigned char * from c++ to c#

  - by tzup

  So I have a function in unmanaged c++ that gets called when some text happens to have "arrived": #using <MyParser.dll> ... void dump_body(const unsigned char *Body, int BodyLen) { // Need to pass the body to DumpBody, but as what type? ... lMyParser::Parser::DumpBody(???); } DumpBody is a function defined in a C# DLL that should take one parameter of type? Body holds an array of characters (text) of length BodyLen. There's obviously some marshalling to be done here but I have no idea how. Please help.

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• Get the key and value of Map that is used Inside another Map (JAVA)

  - by Umair Iqbal

  I am using a map inside another map, The key of the outer map is Integer and the value is another Map. I get the values as expected but I don't know how to get the key and value of teh inner map. Here is the code Map<Integer, Map<Integer, Integer>> cellsMap = new HashMap<Integer, Map<Integer, Integer>>(); Map<Integer , Integer> bandForCell = cellsMap.get(band_number); if (bandForCell == null) bandForCell = new HashMap<Integer, Integer>(); bandForCell.put(erfcn, cell_found); cellsMap.put(band_number, bandForCell); csv.writeCells((Map<Integer, Map<Integer, Integer>>) cellsMap); public void writeCells (Map<Integer, Map<Integer, Integer>> cellsMap ) throws IOException { for (Map.Entry<Integer, Map<Integer, Integer>> entry : cellsMap.entrySet()) { System.out.println("Key: " + entry.getKey() + ". Value: " + entry.getValue() + "\n"); } } Out put of my Map Key: 20 Value: {6331=0, 6330=1, 6329=1, 6328=0, 6335=1, 6437=0, 6436=1} The value in the above output is another map. How can I get the key and value of the inner map from the value of the outer map? Like Keys of inner map = 6331, 6330, 6329 .... and values of inner map = 0 , 1 , 1 , 0 ... Thanks

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• Trying to install realtek drivers for ASUS USB-N13, encountering "Compile make driver error: 2"

  - by limp_chimp

  I'm trying to put an ASUS USB-N13 wireless adapter in my desktop running Ubuntu 12.04. The details of my problem are identical to the one described in this question: Connecting Asus USB-N13 Wireless Adapter. As such, I'm running through the exact steps laid out in the top-rated answer to that question. All was going well until I get to building the drivers. sudo bash install.sh produces the following output: ################################################## Realtek Wi-Fi driver Auto installation script Novembor, 21 2011 v1.1.0 ################################################## Decompress the driver source tar ball: rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405.tar.gz rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/autoconf_rtl8712_usb_linux.h rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/clean rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl8712_cmd.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/config rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/crypto/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/crypto/rtl871x_security.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/debug/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/debug/rtl871x_debug.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/eeprom/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/eeprom/rtl871x_eeprom.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/efuse/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/efuse/rtl8712_efuse.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/hal/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/hal/rtl8712/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/hal/rtl8712/hal_init.c [...truncated for space...] rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/ioctl/rtl871x_ioctl_linux.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/ioctl/rtl871x_ioctl_query.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/ioctl/rtl871x_ioctl_rtl.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/ioctl/rtl871x_ioctl_set.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/Kconfig rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/led/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/led/rtl8712_led.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/Makefile rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/mlme/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/mlme/ieee80211.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/mlme/rtl871x_mlme.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/mp/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/mp/rtl871x_mp.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/mp/rtl871x_mp_ioctl.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/cmd_linux.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/ioctl_cfg80211.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/io_linux.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/mlme_linux.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/recv_linux.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/rtw_android.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_dep/linux/xmit_linux.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_intf/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_intf/linux/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_intf/linux/os_intfs.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_intf/linux/usb_intf.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/os_intf/osdep_service.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/pwrctrl/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/pwrctrl/rtl871x_pwrctrl.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/recv/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/recv/rtl8712_recv.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/recv/rtl871x_recv.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/rf/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/rf/rtl8712_rf.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/rf/rtl871x_rf.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/runwpa rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/sta_mgt/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/sta_mgt/rtl871x_sta_mgt.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/wlan0dhcp rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/wpa1.conf rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/xmit/ rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/xmit/rtl8712_xmit.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/xmit/rtl871x_xmit.c rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405 Authentication requested [root] for make clean: rm -fr *.mod.c *.mod *.o .*.cmd *.ko *~ rm .tmp_versions -fr ; rm Module.symvers -fr cd cmd ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd crypto ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd debug ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd eeprom ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd hal/rtl8712 ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd io ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd ioctl ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd led ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd mlme ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd mp ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd os_dep/linux ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd os_intf ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd os_intf/linux ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd pwrctrl ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd recv ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd rf ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd sta_mgt ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd xmit; rm -fr *.mod.c *.mod *.o .*.cmd *.ko cd efuse; rm -fr *.mod.c *.mod *.o .*.cmd *.ko Authentication requested [root] for make driver: make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/3.2.0-23-generic/build M=/home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405 modules make[1]: Entering directory `/usr/src/linux-headers-3.2.0-23-generic' CC [M] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.o In file included from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:23:0: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/osdep_service.h: In function ‘_init_timer’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/osdep_service.h:151:17: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] In file included from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_ht.h:25:0, from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/drv_types.h:67, from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:24: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h: In function ‘get_da’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:350:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:350:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:353:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:353:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:356:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:356:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:359:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:359:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h: In function ‘get_sa’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:374:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:374:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:377:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:377:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:380:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:380:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:383:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:383:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h: In function ‘get_hdr_bssid’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:397:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:397:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:400:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:400:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:403:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/wifi.h:403:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] In file included from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/drv_types.h:70:0, from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:24: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_cmd.h: At top level: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_cmd.h:107:25: error: field ‘event_tasklet’ has incomplete type In file included from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/drv_types.h:72:0, from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:24: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_xmit.h:355:24: error: field ‘xmit_tasklet’ has incomplete type In file included from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/drv_types.h:73:0, from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:24: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_recv.h:205:24: error: field ‘recv_tasklet’ has incomplete type In file included from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/drv_types.h:73:0, from /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:24: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_recv.h: In function ‘rxmem_to_recvframe’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_recv.h:435:30: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/include/rtl871x_recv.h:435:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c: In function ‘_init_cmd_priv’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:93:75: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:101:60: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c: In function ‘_init_evt_priv’: /home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.c:135:59: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] make[2]: *** [/home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/cmd/rtl871x_cmd.o] Error 1 make[1]: *** [_module_/home/thinkpad20/Downloads/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405/driver/rtl8712_8188_8191_8192SU_usb_linux_v2.6.6.0.20120405] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.2.0-23-generic' make: *** [modules] Error 2 ################################################## Compile make driver error: 2 Please check error Mesg ################################################## I'm not a superuser, only a hobbyist. I really just want this to work ~.~ so I can get on with my life. Sigh. Anyway, grumbling aside, I hope people can help.

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• Why this C program outputs a negative number?

  - by JMSA

  I have assigned the complement value in an unsigned variable. Then why this C program outputs a negative number? #include<stdio.h> #include<conio.h> int main() { unsigned int Value = 4; /* 4 = 0000 0000 0000 0100 */ unsigned int result = 0; result = ~ Value; /* -5 = 1111 1111 1111 1011 */ printf("result = %d", result); /* -5 */ getch(); return 0; }

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• C Population Count of unsigned 64-bit integer with a maximum value of 15

  - by BitTwiddler1011

  I use a population count (hamming weight) function intensively in a windows c application and have to optimize it as much as possible in order to boost performance. More than half the cases where I use the function I only need to know the value to a maximum of 15. The software will run on a wide range of processors, both old and new. I already make use of the POPCNT instruction when Intel's SSE4.2 or AMD's SSE4a is present, but would like to optimize the software implementation (used as a fall back if no SSE4 is present) as much as possible. Currently I have the following software implementation of the function: inline int population_count64(unsigned __int64 w) { w -= (w 1) & 0x5555555555555555ULL; w = (w & 0x3333333333333333ULL) + ((w 2) & 0x3333333333333333ULL); w = (w + (w 4)) & 0x0f0f0f0f0f0f0f0fULL; return int(w * 0x0101010101010101ULL) 56; } So to summarize: (1) I would like to know if it is possible to optimize this for the case when I only want to know the value to a maximum of 15. (2) Is there a faster software implementation (for both Intel and AMD CPU's) than the function above?

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• Convert binary unsigned vector to dec list

  - by Juan

  This code convert a unsigned long vector variable cR1 to NB_ERRORS numbers (in 'a' variable I print these numbers). for (l = 0; l < NB_ERRORS; ++l) { k = (l * EXT_DEGREE) / BIT_SIZE_OF_LONG; j = (l * EXT_DEGREE) % BIT_SIZE_OF_LONG; a = cR1[k] >> j; if(j + EXT_DEGREE > BIT_SIZE_OF_LONG) a ^= cR1[k + 1] << (BIT_SIZE_OF_LONG - j); a &= ((1 << EXT_DEGREE) - 1); printf("\na=%d\n",a); } For example I am have a cR1 with two elements that follow: 0,0,1,1,0,1,0,0,0,0,1,0,0,1,1,1,1,1,0,0,1,1,1,1,0,0,0,1,1,0,0,0,1,0,1,1,0,0,1,0,1,1,1,0,0,1,0,0,1,0,1,0,1,1,1,0,1,0,0,1,1,1,1,0, executing that code I get (44), (228, (243), (24), (77), (39), (117), (121). This code convert from right to left, I want modify to convert from right to left, Where I will be able to modify this? pdta: In the example case EXT_DEGREE = 8, BIT_SIZE_OF_LONG = 32

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• Mallocing an unsigned char array to store ints

  - by Max Desmond

  I keep getting a segmentation fault when i test the following code. I am currently unable to find an answer after having searched the web. a = (byte *)malloc(sizeof(byte) * x ) ; for( i = 0 ; i < x-1 ; i++ ) { scanf("%d", &y ) ; a[i] = y ; } Both y and x are initialized. X is the size of the array determined by the user. The segmentation fault is on the second to last integer to be added, i found this by adding printf("roar") ; before setting a[i] to y and entering one number at a time. Byte is a typedef of an unsigned char. Note: I've also tried using a[i] = (byte)y ; A is ininitalized as follows byte *a ; If you need to view the entire code it is this: #include <stdio.h> #include <stdlib.h> #include "sort.h" int p_cmp_f () ; int main( int argc, char *argv[] ) { int x, y, i, choice ; byte *a ; while( choice !=2 ) { printf( "Would you like to sort integers?\n1. Yes\n2. No\n" ) ; scanf("%d", &choice ) ; switch(choice) { case 1: printf( "Enter the length of the array: " ) ; scanf( "%d", &x ) ; a = (byte *)malloc(sizeof( byte ) * x ) ; printf( "Enter %d integers to add to the array: ", x ) ; for( i = 0 ; i < x -1 ; i++ ) { scanf( "%d", &y ) ; a[i] = y ; } switch( choice ) { case 1: bubble_sort( a, x, sizeof(int), p_cmp_f ) ; for( i = 0 ; i < x ; i++ ) printf( "%d", a[i] ; break ; case 2: selection_sort( a, x, sizeof(int), p_cmp_f ) ; for( i = 0 ; i < x; i++ ) printf( "%d", a[i] ; break ; case 3: insertion_sort( a, x, sizeof(int), p_cmp_f ) ; for( i = 0 ; i < x ; i++ ) printf( "%d", a[i] ; break ; case 4: merge_sort( a, x, sizeof(int), p_cmp_f ) ; for( i = 0 ; i < x ; i++ ) printf( "%d", a[i] ; break ; case 5: quick_sort( a, x, sizeof(int), p_cmp_f ) ; for( i = 0 ; i < x ; i++ ) printf( "%d", a[i] ; break ; default: printf("Enter either 1,2,3,4, or 5" ) ; break ; } case 2: printf( "Thank you for using this program\n" ) ; return 0 ; break ; default: printf( "Enter either 1 or 2: " ) ; break ; } } free(a) ; return 0 ; } int p_cmp_f( byte *element1, byte *element2 ) { return *((int *)element1) - *((int *)element2) ; }

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• Delphi - E2010 Incompatible types: 'Integer' and 'Char' - Any ideas

  - by zeencat

  I've been tasked with porting a legacy Delphi application over to C# .Net. The original delphi developer left several months before I was hired. I'm receiving the E2010 Incompatible types: 'Integer' and 'Char' error for the below method. I'm trying to compile the application within the Delphi 2007 IDE, I've been told that original application is either Delphi 4 or 5 if that helps any. I understand what the error is telling me but I don't understand why\how it is applied to the code snippet below. Any help\direction would be greatly appreciated. Thanks in advance function StrIComp_JOH_PAS_1(const Str1, Str2: PChar): Integer; var Ch1, Ch2 : Char; Offset : Integer; PStr : PChar; begin; PStr := Str1; Offset := Str2 - PStr; repeat Ch1 := Upper[PStr^]; Ch2 := Upper[PStr[Offset]]; if (Ch1 = #0) or (Ch1 <> Ch2) then Break; Inc(PStr); until False; Result := Integer(Ch1) - Integer(Ch2); end;

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