Ralph, can you please describe your environment (at least compiler (and version) + configure command line) i checked osc_rdma_data_move.c only :
size_t incoming_length; is used to improve readability. it is used only in an assert clause and in OPAL_OUTPUT_VERBOSE one way to silence the warning is not to use this variable (and compromise readability). an other way would be to #if OPAL_ENABLE_DEBUG size_t incoming_length = request->req_status._ucount); #endif imho, a more elegant way would be to use a macro like OPAL_IF_DEBUG(size_t incoming_length = request->req_status._ucount);) /* i am not aware of such a macro, please point me if it already exists */ any thoughts ? about the other warnings, xxx may be used uninitialized in this function, i was unable to reproduce it and i have to double check again. so far, it seems this is a false positive/compiler bug that could be triggered by inlining /* i could not find any path in which the variable is used unitialized */ Cheers, Gilles On Mon, May 26, 2014 at 12:25 PM, Ralph Castain <r...@open-mpi.org> wrote: > Building optimized on an IB-based machine: > > osc_rdma_data_move.c: In function 'ompi_osc_rdma_callback': > osc_rdma_data_move.c:1633: warning: unused variable 'incoming_length' > osc_rdma_data_move.c: In function 'ompi_osc_rdma_control_send': > osc_rdma_data_move.c:221: warning: 'ptr' may be used uninitialized in this > function > osc_rdma_data_move.c:220: warning: 'frag' may be used uninitialized in > this function > osc_rdma_data_move.c: In function 'ompi_osc_gacc_long_start': > osc_rdma_data_move.c:961: warning: 'acc_data' may be used uninitialized in > this function > osc_rdma_data_move.c: In function 'ompi_osc_rdma_gacc_start': > osc_rdma_data_move.c:912: warning: 'acc_data' may be used uninitialized in > this function > osc_rdma_comm.c: In function 'ompi_osc_rdma_rget_accumulate_internal': > osc_rdma_comm.c:943: warning: 'ptr' may be used uninitialized in this > function > osc_rdma_comm.c:940: warning: 'frag' may be used uninitialized in this > function > osc_rdma_data_move.c: In function 'ompi_osc_rdma_acc_long_start': > osc_rdma_data_move.c:827: warning: 'acc_data' may be used uninitialized in > this function > osc_rdma_comm.c: In function 'ompi_osc_rdma_rget': > osc_rdma_comm.c:736: warning: 'ptr' may be used uninitialized in this > function > osc_rdma_comm.c:733: warning: 'frag' may be used uninitialized in this > function > osc_rdma_comm.c: In function 'ompi_osc_rdma_accumulate_w_req': > osc_rdma_comm.c:420: warning: 'ptr' may be used uninitialized in this > function > osc_rdma_comm.c:417: warning: 'frag' may be used uninitialized in this > function > osc_rdma_comm.c: In function 'ompi_osc_rdma_put_w_req': > osc_rdma_comm.c:251: warning: 'ptr' may be used uninitialized in this > function > osc_rdma_comm.c:244: warning: 'frag' may be used uninitialized in this > function > osc_rdma_comm.c: In function 'ompi_osc_rdma_get': > osc_rdma_comm.c:736: warning: 'ptr' may be used uninitialized in this > function > osc_rdma_comm.c:733: warning: 'frag' may be used uninitialized in this > function > > > > > vt_plugin_cntr.c: In function 'vt_plugin_cntr_write_post_mortem': > vt_plugin_cntr.c:1139: warning: 'min_counter' may be used uninitialized in > this function > vt_plugin_cntr.c: In function 'vt_plugin_cntr_write_post_mortem': > vt_plugin_cntr.c:1139: warning: 'min_counter' may be used uninitialized in > this function > vt_plugin_cntr.c: In function 'vt_plugin_cntr_write_post_mortem': > vt_plugin_cntr.c:1139: warning: 'min_counter' may be used uninitialized in > this function > vt_plugin_cntr.c: In function 'vt_plugin_cntr_write_post_mortem': > vt_plugin_cntr.c:1139: warning: 'min_counter' may be used uninitialized in > this function > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/05/14840.php >
