/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:623:13: warning: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                } while ( abs( lXNode - lXIdx ) > 8 );
                          ^
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:623:13: note: use function 'std::abs' instead
                } while ( abs( lXNode - lXIdx ) > 8 );
                          ^~~
                          std::abs
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:623:13: note: please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:630:14: warning: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                } while (( abs( lXNode - lXIdx ) > 8 ) || ( abs( lXNode - lXIdx ) < 2 ));
                           ^
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:630:14: note: use function 'std::abs' instead
                } while (( abs( lXNode - lXIdx ) > 8 ) || ( abs( lXNode - lXIdx ) < 2 ));
                           ^~~
                           std::abs
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:630:14: note: please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:630:47: warning: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                } while (( abs( lXNode - lXIdx ) > 8 ) || ( abs( lXNode - lXIdx ) < 2 ));
                                                            ^
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:630:47: note: use function 'std::abs' instead
                } while (( abs( lXNode - lXIdx ) > 8 ) || ( abs( lXNode - lXIdx ) < 2 ));
                                                            ^~~
                                                            std::abs
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:630:47: note: please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:638:13: warning: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                } while ( abs( lYNode - lYIdx ) > 8 );
                          ^
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:638:13: note: use function 'std::abs' instead
                } while ( abs( lYNode - lYIdx ) > 8 );
                          ^~~
                          std::abs
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:638:13: note: please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:645:14: warning: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                } while (( abs( lYNode - lYIdx ) > 8 ) || ( abs( lYNode - lYIdx ) < 2 ));
                           ^
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:645:14: note: use function 'std::abs' instead
                } while (( abs( lYNode - lYIdx ) > 8 ) || ( abs( lYNode - lYIdx ) < 2 ));
                           ^~~
                           std::abs
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:645:14: note: please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:645:47: warning: absolute value function 'abs' given an argument of type 'long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                } while (( abs( lYNode - lYIdx ) > 8 ) || ( abs( lYNode - lYIdx ) < 2 ));
                                                            ^
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:645:47: note: use function 'std::abs' instead
                } while (( abs( lYNode - lYIdx ) > 8 ) || ( abs( lYNode - lYIdx ) < 2 ));
                                                            ^~~
                                                            std::abs
/home/edward-san/zdoom/zandronum/stable/src/astar.cpp:645:47: note: please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'
6 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/botcommands.cpp:1323:24: warning: absolute value function 'abs' given an argument of type 'LONG' (aka 'long') but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                lAngle = ANGLE_MAX - abs( lAngle );
                                     ^
/home/edward-san/zdoom/zandronum/stable/src/botcommands.cpp:1323:24: note: use function 'std::abs' instead
                lAngle = ANGLE_MAX - abs( lAngle );
                                     ^~~
                                     std::abs
/home/edward-san/zdoom/zandronum/stable/src/botcommands.cpp:1880:46: warning: absolute value function 'abs' given an argument of type 'LONG' (aka 'long') but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]
                pBot->GetPlayer( )->mo->angle -= ANGLE_1 * abs( lBuffer );
                                                           ^
/home/edward-san/zdoom/zandronum/stable/src/botcommands.cpp:1880:46: note: use function 'std::abs' instead
                pBot->GetPlayer( )->mo->angle -= ANGLE_1 * abs( lBuffer );
                                                           ^~~
                                                           std::abs
/home/edward-san/zdoom/zandronum/stable/src/botcommands.cpp:1965:73: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
        if (( pBot->m_ulPlayerEnemy >= MAXPLAYERS ) || ( pBot->m_ulPlayerEnemy < 0 ) || ( playeringame[pBot->m_ulPlayerEnemy] == false ))
                                                         ~~~~~~~~~~~~~~~~~~~~~ ^ ~
3 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/bots.cpp:1255:35: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
                                if (( BotInfo.ulChatFrequency < 0 ) || ( BotInfo.ulChatFrequency > 100 ))
                                      ~~~~~~~~~~~~~~~~~~~~~~~ ^ ~
/home/edward-san/zdoom/zandronum/stable/src/bots.cpp:1723:34: warning: address of array 'g_BotInfo[this->m_ulBotInfoIdx]->szSkinName' will always evaluate to 'true' [-Wpointer-bool-conversion]
        if ( g_BotInfo[m_ulBotInfoIdx]->szSkinName )
        ~~   ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
/home/edward-san/zdoom/zandronum/stable/src/bots.cpp:1743:34: warning: address of array 'g_BotInfo[this->m_ulBotInfoIdx]->szClassName' will always evaluate to 'true' [-Wpointer-bool-conversion]
        if ( g_BotInfo[m_ulBotInfoIdx]->szClassName )
        ~~   ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
3 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/chat.cpp:842:73: warning: comparison of constant 4392081922311798 with expression of type 'int' is always true [-Wtautological-constant-out-of-range-compare]
        if ( argv.argc( ) >= 3 && ( atoi( argv[2] ) > 0 ) && ( atoi( argv[2] ) < LONG_MAX / ( TICRATE * MINUTE )))
                                                               ~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
/home/edward-san/zdoom/zandronum/stable/src/m_options.cpp:5335:8: warning: expression result unused [-Wunused-value]
                                                        *clip++;
                                                        ^~~~~~~
2 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/networkshared.cpp:923:26: warning: address of array 'this->_ipVector[ulIdx].szComment' will always evaluate to 'true' [-Wpointer-bool-conversion]
                        if ( _ipVector[ulIdx].szComment && strlen( _ipVector[ulIdx].szComment ))
                             ~~~~~~~~~~~~~~~~~^~~~~~~~~ ~~
1 warning generated.
/home/edward-san/zdoom/zandronum/stable/src/network/cl_auth.cpp:147:74: warning: format specifies type 'int' but the argument has type 'LONG' (aka 'long') [-Wformat]
                Printf ( "Error: Received unknown SRP command '%d' from client %d.\n", lCommand, SERVER_GetCurrentClient() );
                                                               ~~                      ^~~~~~~~
                                                               %ld
/home/edward-san/zdoom/zandronum/stable/src/network/cl_auth.cpp:147:84: warning: format specifies type 'int' but the argument has type 'LONG' (aka 'long') [-Wformat]
                Printf ( "Error: Received unknown SRP command '%d' from client %d.\n", lCommand, SERVER_GetCurrentClient() );
                                                                               ~~                ^~~~~~~~~~~~~~~~~~~~~~~~~
                                                                               %ld
2 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/network/sv_auth.cpp:500:74: warning: format specifies type 'int' but the argument has type 'LONG' (aka 'long') [-Wformat]
                Printf ( "Error: Received unknown SRP command '%d' from client %d.\n", lCommand, SERVER_GetCurrentClient() );
                                                               ~~                      ^~~~~~~~
                                                               %ld
/home/edward-san/zdoom/zandronum/stable/src/network/sv_auth.cpp:500:84: warning: format specifies type 'int' but the argument has type 'LONG' (aka 'long') [-Wformat]
                Printf ( "Error: Received unknown SRP command '%d' from client %d.\n", lCommand, SERVER_GetCurrentClient() );
                                                                               ~~                ^~~~~~~~~~~~~~~~~~~~~~~~~
                                                                               %ld
2 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/p_acs.cpp:3805:43: warning: format specifies type 'int' but the argument has type 'ULONG' (aka 'unsigned long') [-Wformat]
                                                work.AppendFormat ( "%d@localhost", ulPlayer );
                                                                     ~~             ^~~~~~~~
                                                                     %lu
/home/edward-san/zdoom/zandronum/stable/src/sv_main.cpp:2806:35: warning: address of array 'players[ulClient].userinfo.netname' will always evaluate to 'true' [-Wpointer-bool-conversion]
                if ( players[ulClient].userinfo.netname && ( SERVER_GetClient( ulClient )->State >= CLS_SPAWNED_BUT_NEEDS_AUTHENTICATION ) )
                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ ~~
/home/edward-san/zdoom/zandronum/stable/src/sv_main.cpp:4991:7: warning: taking the absolute value of unsigned type 'unsigned long' has no effect [-Wabsolute-value]
        if ( labs (currentPing - p->ulPing) > 3.5 * ticLength )
             ^
/home/edward-san/zdoom/zandronum/stable/src/sv_main.cpp:4991:7: note: remove the call to 'labs' since unsigned values cannot be negative
        if ( labs (currentPing - p->ulPing) > 3.5 * ticLength )
             ^~~~~
2 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/sv_save.cpp:157:15: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
        if (( ulSlot < 0 ) || ( ulSlot >= MAXPLAYERS ))
              ~~~~~~ ^ ~
1 warning generated.
/home/edward-san/zdoom/zandronum/stable/src/team.cpp:899:17: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
        if ( ulTeamIdx < 0 || ulTeamIdx >= TEAM_GetNumAvailableTeams( ))
             ~~~~~~~~~ ^ ~
/home/edward-san/zdoom/zandronum/stable/src/team.cpp:1798:15: warning: equality comparison with extraneous parentheses [-Wparentheses-equality]
        if ( (pActor == NULL) )
              ~~~~~~~^~~~~~~
/home/edward-san/zdoom/zandronum/stable/src/team.cpp:1798:15: note: remove extraneous parentheses around the comparison to silence this warning
        if ( (pActor == NULL) )
             ~       ^      ~
/home/edward-san/zdoom/zandronum/stable/src/team.cpp:1798:15: note: use '=' to turn this equality comparison into an assignment
        if ( (pActor == NULL) )
                     ^~
                     =
2 warnings generated.
/home/edward-san/zdoom/zandronum/stable/src/za_database.cpp:430:31: warning: format specifies type 'int' but the argument has type 'long' [-Wformat]
                newVal.AppendFormat ( "%d", DATABASE_GetEntry ( Namespace, EntryName ).ToLong() + Increment );
                                       ~~   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                       %ld
1 warning generated.
/home/edward-san/zdoom/zandronum/stable/src/g_shared/hudmessages.cpp:312:20: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
        if ( lBottomDelta < 0 )
             ~~~~~~~~~~~~ ^ ~
1 warning generated.