iheap_os2.cc(60): Warning! W726: col(1) no reference to formal parameter 'lock' 
iheap_os2.cc(60): Note! N393: col(1) included from iheap.cc(25) 
iheap_os2.cc(60): Note! N392: col(1) 'void * lock' in 'void OS_Lock( void * )' defined in: iheap_os2.cc(58) (col 27) 
iheap_os2.cc(64): Warning! W726: col(1) no reference to formal parameter 'lock' 
iheap_os2.cc(64): Note! N392: col(1) 'void * lock' in 'void OS_Unlock( void * )' defined in: iheap_os2.cc(62) (col 29) 
iheap.cc(492): Warning! W014: col(0) no reference to symbol 'OS_FreeLock' 
iheap.cc(492): Note! N392: col(0) 'void OS_FreeLock( void * )' defined in: iheap_os2.cc(53) (col 13) 
iheap.cc(492): Warning! W014: col(0) no reference to symbol 'OS_TryLock' 
iheap.cc(492): Note! N392: col(0) 'int OS_TryLock( void * )' defined in: iheap_os2.cc(66) (col 12)