Posts

Showing posts from May, 2026

UVM Report Server Version compatibility - new UVMLint rule

Troubleshooting UVM Report Server Fractures: When UVM 1.2+ Code Meets a UVM 1.1d Environment When maintaining legacy testbenches or integrating modern third-party Verification IPs (VIP), engineers frequently hit a brick wall: code written using modern UVM idioms fails with catastrophic compile errors when forced into a UVM 1.1d environment. The root cause is a silent, backward-incompatible structural redesign of the UVM reporting API that occurred between UVM 1.1d and UVM 1.2. The Architectural Shift If your code was written for UVM 1.2 or IEEE 1800.2, it likely utilizes uvm_default_report_server and overrides compose_report_message . When this code hits a UVM 1.1d simulator, the compilation crashes because those components literally do not exist yet. In UVM 1.1d , uvm_report_server is a concrete base class, and formatting relies on scalar string/integer arguments. In UVM 1.2+ , uvm_report_server was turned into a virtual class, its concrete imp...