Compiler warnings with GCC 4.6 on oneiric hosts

[Alexey Kopytov]

Debug 5.1 builds fail on Ubuntu OneiricOcelot hosts in Jenkins due to new warnings resulting from -Werror=unused-but-set-variable:

os/os0file.c: In function ‘os_aio_simulated_wake_handler_thread’:
os/os0file.c:3596:9: error: variable ‘segment’ set but not used [-Werror=unused-but-set-variable]
os/os0file.c: In function ‘os_aio_simulated_handle’:
os/os0file.c:4081:9: error: variable ‘segment’ set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

http://jenkins.percona.com/view/Percona%20Server%205.1/job/percona-server-5.1-param/211/BUILD_TYPE=debug,Host=ubuntu-oneiric-32bit/console

[Laurynas Biveinis (laurynas-biveinis)]

The next issue:
g++ -DMYSQL_SERVER -DDEFAULT_MYSQL_HOME="\"/usr/local\"" -DMYSQL_DATADIR="\"/usr/local/var\"" -DSHAREDIR="\"/usr/local/share/mysql\"" -DPLUGINDIR="\"/usr/local/lib/mysql/plugin\"" -DHAVE_EVENT_SCHEDULER -DHAVE_CONFIG_H -I. -I../include -I../include -I../include -I../regex -I. -Wall -Wextra -Wunused -Wwrite-strings -Wno-strict-aliasing -Werror -Wno-unused-parameter -g -DSAFE_MUTEX -O2 -fno-implicit-templates -fno-exceptions -fno-rtti -MT log.o -MD -MP -MF .deps/log.Tpo -c -o log.o log.cc
log.cc: In member function ‘bool LOGGER::slow_log_print(THD*, const char*, uint, ulonglong)’:
log.cc:998:12: error: variable ‘current_time’ set but not used [-Werror=unused-but-set-variable]

[Laurynas Biveinis (laurynas-biveinis)]

g++ -DMYSQL_SERVER -DDEFAULT_MYSQL_HOME="\"/usr/local\"" -DMYSQL_DATADIR="\"/usr/local/var\"" -DSHAREDIR="\"/usr/local/share/mysql\"" -DPLUGINDIR="\"/usr/local/lib/mysql/plugin\"" -DHAVE_EVENT_SCHEDULER -DHAVE_CONFIG_H -I. -I../include -I../include -I../include -I../regex -I. -Wall -Wextra -Wunused -Wwrite-strings -Wno-strict-aliasing -Werror -Wno-unused-parameter -g -O -DSAFE_MUTEX -fno-implicit-templates -fno-exceptions -fno-rtti -MT sql_analyse.o -MD -MP -MF .deps/sql_analyse.Tpo -c -o sql_analyse.o sql_analyse.cc
sql_show.cc: In function ‘int store_create_info(THD*, TABLE_LIST*, String*, HA_CREATE_INFO*, bool)’:
sql_show.cc:1254:8: error: variable ‘show_table_options’ set but not used [-Werror=unused-but-set-variable]

[Alexey Kopytov (akopytov)]

Uh, we should build with "make -k".

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2713