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(Updated April 4, 2015, 1:15 a.m.) Review request for Asterisk Developers. Bugs: ASTERISK-24917 https://issues.asterisk.org/jira/browse/ASTERISK-24917 Repository: Asterisk Description ------- clang's static analyzer will throw quite a number warnings / errors during compilation, some of which can be very helpfull in finding corner-case bugs. clang compiler warning:-Wunused-value Changes: apps/app_agent_pool.c multiple occasions where return value from ast_channel_ref and ast_channel_unref is not checked not used. return value from AST_LIST_REMOVE should be checked. Possible issues with leaked logged reference (added remark) channels/chan_iax2.c return values from ast_callid_ref and ast_callid_unref can/should be used to update the pointer return value from AST_SCHED_DEL should be used to update the scheduled variable return value from AST_LIST_REMOVE should be checked. channels/iax2/parser.c return value from AST_LIST_REMOVE should be checked. include/asterisk/stringfields.h Quick fix to send the returned value from ast_string_field_ptr_set into the void. Work in Progress: There are too many sources issues with "-Wunused-value" for one person to create all the fixes. If we want to actually use this warning we will need a couple of extra hands-on. Should we suppress "-Wunused-value" ? : I think some of the issues pointed out by clang could be very helpfull, for example the "unref/ref/AST_LIST_REMOVE" changes that where needed in chan_iax2.c and apps/app_agent_pool.c. Some others a less interesting, for example the SCHED_DEL fixes. Diffs (updated) ----- /branches/13/include/asterisk/stringfields.h 433444 /branches/13/channels/iax2/parser.c 433444 /branches/13/channels/chan_iax2.c 433444 /branches/13/apps/app_agent_pool.c 433444 Diff: https://reviewboard.asterisk.org/r/4554/diff/ Testing ------- Just to make it clear, this was just a sample / proposal to work through large set of -Wunused-value warnings return. Some of them could be interesting, others might not be be. Mostly looking for a discussion about which path to follow, and see if we can divvy up the work a little. Compiles / Untested / Pretty certain it contains issue because of different way of dealing with return value from ..._unref. File Attachments ---------------- ASTCFLAGS="-Wno-error=unused-value" make &| grep "[-W" -B1 -A2 https://reviewboard.asterisk.org/media/uploaded/files/2015/03/28/83f2f382-9ef2-41cf-8e7a-c188c014c17e__make.report Thanks, Diederik de Groot
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