gpio_tl_intg_err test failing on Questa

Description

Hi

I am trying to execute a GPIO test gpio_tl_intg_err test with Questa, The test fails, below is the output from log file

Compiling /tmp/farid@dsc007_dpi_3644952/linux_x86_64_gcc-7.4.0/exportwrapper.c
# Loading /tmp/farid@dsc007_dpi_3644952/linux_x86_64_gcc-7.4.0/vsim_auto_compile.so
do /home/idsproj01/trusted/projects/TrEB/Design/TReB_ASIC_01/_cad/Digital/user/farid/se-metis/hw/dv/tools/questa/sim.tcl
0
0
UVM_INFO @ 0 ps: reporter [RNTST] Running test gpio_base_test...
** Warning: (vsim-3829) Non-existent associative array entry. Returning default value.
   Time: 0 ps  Iteration: 54  Process: /cip_base_pkg::cip_base_scoreboard #(gpio_ral_pkg::gpio_reg_block, gpio_env_pkg::gpio_env_cfg, gpio_env_pkg::gpio_env_cov)::check_alerts/#FORK#259_7feff064a0d File: /home/idsproj01/trusted/projects/TrEB/Design/TReB_ASIC_01/_cad/Digital/user/farid/se-metis/scratch/48-dv-questa-questa-dvsim-run-breaking-at/gpio-sim-questa/cover_reg_top/sim-vcs/../src/lowrisc_dv_cip_lib_0/cip_base_scoreboard.sv Line: 260
UVM_INFO @         0 ps: (gpio_base_vseq.sv:36) uvm_test_top.env.virtual_sequencer [uvm_test_top.env.virtual_sequencer.gpio_common_vseq] weak pulldown applied to gpio's
** Warning: (vsim-3829) Non-existent associative array entry. Returning default value.
   Time: 16757 ps  Iteration: 2  Process: /cip_base_pkg::cip_base_scoreboard #(gpio_ral_pkg::gpio_reg_block, gpio_env_pkg::gpio_env_cfg, gpio_env_pkg::gpio_env_cov)::check_alerts/#FORK#259_7feff064a0d File: /home/idsproj01/trusted/projects/TrEB/Design/TReB_ASIC_01/_cad/Digital/user/farid/se-metis/scratch/48-dv-questa-questa-dvsim-run-breaking-at/gpio-sim-questa/cover_reg_top/sim-vcs/../src/lowrisc_dv_cip_lib_0/cip_base_scoreboard.sv Line: 260
UVM_INFO @   2665702 ps: (cip_base_vseq__tl_errors.svh:289) uvm_test_top.env.virtual_sequencer [uvm_test_top.env.virtual_sequencer.gpio_common_vseq] Running run_tl_intg_err_vseq 1/10
UVM_INFO @   5032344 ps: (cip_tl_seq_item.sv:121) uvm_test_top.env.m_tl_agent_gpio_reg_block.sequencer [uvm_test_top.env.virtual_sequencer.gpio_common_vseq.tl_seq.req] TL data or integrity bits have been flipped, see the changes as below:
	 a_data: 0x219ece5a
 -> 0x219eee42
UVM_ERROR @   5399007 ps: (cip_base_vseq.sv:595) uvm_test_top.env.virtual_sequencer [uvm_test_top.env.virtual_sequencer.gpio_common_vseq] expect alert:fatal_fault to fire
UVM_INFO @   5399007 ps: (uvm_report_catcher.svh:705) [UVM/REPORT/CATCHER] 
--- UVM Report catcher Summary ---


Number of demoted UVM_FATAL reports  :    0
Number of demoted UVM_ERROR reports  :    0
Number of demoted UVM_WARNING reports:    0
Number of caught UVM_FATAL reports   :    0
Number of caught UVM_ERROR reports   :    0
Number of caught UVM_WARNING reports :    0

UVM_INFO @   5399007 ps: (uvm_report_server.svh:847) [UVM/REPORT/SERVER] 
--- UVM Report Summary ---

Quit count reached!
Quit count :     1 of     1
** Report counts by severity
UVM_INFO :    5
UVM_WARNING :    0
UVM_ERROR :    1
UVM_FATAL :    0

Can you please point us how can we solve this error, the error appears to be related to alerts in cip_base_scoreboard.sv, It looks like that element is not found on accessed index of associative array "expected_alert[]" in cip_base_scoreboard.sv hence a default value is being returned.

The test passes with xcelium....

Reproduce gpio_tl_intg_err with Questa and compare its output with the passing Xcelium run. Inspect cip_base_scoreboard.sv around line 260 and cip_base_vseq.sv around line 595, focusing on expected_alert[] and the missing fatal_fault alert. Done means the test completes successfully under Questa with the expected alert observed.