%Warning-IEEEMAYDEPRECATE: t/t_assign_cont_automatic_bad.v:14:7: Feature may be deprecated in future IEEE standard 14 | assign g = signed'(l); | ^~~~~~ ... For warning description see https://verilator.org/warn/IEEEMAYDEPRECATE?v=latest ... Use "/* verilator lint_off IEEEMAYDEPRECATE */" and lint_on around source to disable this message. %Error: t/t_assign_cont_automatic_bad.v:14:26: Automatic lifetime variable not allowed in continuous assignment (IEEE 1800-2023 6.21): 'l' : ... note: In instance 't' 14 | assign g = signed'(l); | ^ ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance. %Error: Exiting due to