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ntel Software: Quartus Prime Lite 20.1 Internal Error: Sub-system: CDB_SGATE

Hello to everyone,

I am using a simple VHDL code in which I have a function defined into architecture's declarative part, but during Analysis and Synthesis, Quartus gives me the following "Quartus Prime software report" :

Problem Details
Internal Error: Sub-system: CDB_SGATE, File: /quartus/db/cdb_sgate/cdb_sgate_sys.cpp, Line: 3420
iterm != 0
Stack Trace:
0x5bef2: CDB_SGATE_OTERM::insert_fanout + 0x43bd2 (db_cdb_sgate)
0x14bd9: OPT_RAM_POTENTIAL_CANDIDATE::create_true_dual_port_ram_bit_dff + 0x7a9 (SYNTH_INFER)
0xbe1e: OPT_RAM_INFERENCE::create_ram_bits + 0x41e (SYNTH_INFER)
0xa68b: OPT_RAM_INFERENCE::convert_synchronous_ram_sgate_to_nodes + 0xb9b (SYNTH_INFER)
0x9a4b: OPT_RAM_INFERENCE::convert_ram_nodes + 0x4cb (SYNTH_INFER)
0x37278: RTL_SCRIPT::call_ram_rom_fns + 0x220 (SYNTH_OPT)
0x34987: RTL_SCRIPT::call_named_function + 0x597 (SYNTH_OPT)
0x33a08: RTL_SCRIPT::process_script + 0x52c (SYNTH_OPT)
0x33013: opt_process_netlist_scripted + 0x7df (SYNTH_OPT)
0x3a1fa: RTL_ROOT::process_sgate_netlist + 0x1aa (SYNTH_OPT)
0x15d728: SGN_SYNTHESIS::high_level_synthesis + 0x198 (synth_sgn)
0x15e132: SGN_SYNTHESIS::process_current_stage + 0x222 (synth_sgn)
0xc75d5: SGN_EXTRACTOR::synthesize_partition + 0x195 (synth_sgn)
0xc71bf: SGN_EXTRACTOR::synthesis + 0x20f (synth_sgn)
0xc7334: SGN_EXTRACTOR::synthesis_and_post_processing + 0xc4 (synth_sgn)
0x13303: sgn_qic_full + 0x2a3 (synth_sgn)
0x43af: qsyn_execute_sgn + 0x13f (quartus_map)
0x14246: QSYN_FRAMEWORK::execute_core + 0x136 (quartus_map)
0x13d2b: QSYN_FRAMEWORK::execute + 0x49b (quartus_map)
0x1150c: qexe_do_normal + 0x1ec (comp_qexe)
0x16622: qexe_run + 0x432 (comp_qexe)
0x17371: qexe_standard_main + 0xc1 (comp_qexe)
0x1b42b: qsyn_main + 0x53b (quartus_map)
0x13258: msg_main_thread + 0x18 (CCL_MSG)
0x14a5e: msg_thread_wrapper + 0x6e (CCL_MSG)
0x16af0: mem_thread_wrapper + 0x70 (ccl_mem)
0x12af1: msg_exe_main + 0xa1 (CCL_MSG)
0x2a236: __tmainCRTStartup + 0x10e (quartus_map)
0x14033: BaseThreadInitThunk + 0x13 (KERNEL32)
0x73690: RtlUserThreadStart + 0x20 (ntdll)


Executable: quartus_map

System Information
Platform: windows64
OS name: Windows 10
OS version: 10.0

Quartus Prime Information
Address bits: 64
Version: 20.1.1
Build: 720
Edition: Lite Edition


In attechment I have put the archived project.

I did a support service request, but I was adressed here in the Community.

Is there someone that can help me to undertand the reason and how to resolve it?

Thank you in advance.

Tags (3)
0 Kudos
1 Reply

I have duplicate the error and filed a case to the engineering team to check on this. 
Will let you know once this is any update. 

Best Regards,
Richard Tan

p/s: If any answer from the community or Intel support are helpful, please feel free to give Kudos.