Search the Community

Hi, all Does anybody know the differences between debug_all and debug_pp. When i use -debug_all option, vcs runs my test successfully, it will failed if i change -debug_all to -debug_pp. This is the error message and corresponding code: Error-[NOA] Null object access /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_pool.svh, 307 The object is being used before it was constructed/allocated. Please make sure that the object is newed before using it. #0 in \uvm_object_string_pool#(uvm_event)::get at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_pool.svh:307 #1 in \uvm_transaction::new at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_transaction.svh:494 #2 in \uvm_sequence_item::new at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/seq/uvm_sequence_item.svh:53 #3 in \my_tr::new at ../sv/common/my_tr.sv:495 #4 in \uvm_object_registry#(my_tr,"my_tr")::create_object at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_registry.svh:197 #5 in \uvm_factory::create_object_by_type at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_factory.svh:1104 #6 in \uvm_object_registry#(my_tr,"my_tr")::create at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_registry.svh:248 #7 in \my_monitor::run_phase at ../sv/master/my_monitor.sv:91 #8 in \uvm_run_phase::exec_task at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_common_phases.svh:245 #9 in \uvm_task_phase::execute at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:150 #10 in \uvm_task_phase::m_traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:112 #11 in \uvm_task_phase::m_traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:92 #12 in \uvm_task_phase::m_traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:92 #13 in \uvm_task_phase::m_traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:92 #14 in \uvm_task_phase::m_traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:92 #15 in \uvm_task_phase::m_traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:92 #16 in \uvm_task_phase::traverse at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_task_phase.svh:80 #17 in \uvm_phase::execute_phase at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_phase.svh:1171 #18 in \uvm_phase::m_run_phases at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_phase.svh:1847 #19 in \uvm_root::run_test at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_root.svh:417 #20 in run_test at /EDA_Tools/synopsys/vcs_vE-2011.03/etc/uvm-1.1/uvm-1.1d/src/base/uvm_globals.svh:40 #21 in unnamed$$_15 at ../sv/top/my_top.sv:470 #22 in my_tb_top Pieces code of my_monitor.sv: virtual task run_phase(uvm_phase phase); my_tr axi_item; @(negedge clkmg_vif.rst); forever begin @(this.clkmg_vif.wait_one_clk); axi_item = my_tr::type_id::create("axi_item"); collect_pkt(axi_item); scb_port.write(axi_item); end endtask : run_phase By the way, class my_tr has using the field and factory mechanism. Anybody met the same problem? Regards