Null system verilog

You need to create objects of classes before accessing their members or methods. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Null Object Access error in system verilog Ask Question. Asked 5 months ago. Active 4 months ago. Viewed times. Please take a look at the code and help me if someone find any mistakes class node; byte data; node left; node right; function new ; this. Improve this question.

The message tells that you failed to check node references for 'null' somewhere in the recursion path not shown in your example. BTW, there is no need to add the automatic keyword to your class methods; they always have automatic lifetimes. Hi Serge, Thankyou for the reply. Wait statement gets blocked until it evaluates to TRUE. If the trigger executes first, then the waiting process remains blocked. The triggered event property, thus, helps eliminate a common race condition that occurs when both the trigger and the wait using happen at the same time.

A process that blocks waiting for an event might or might not unblock, depending on the execution order of the waiting and triggering processes race condition. However, a process that waits on the triggered state always unblocks, regardless of the order of execution of the wait and trigger operations.

In the following example, event "e1" is triggered and a process is waiting on "e1" in the same time step. The process can never catch the triggering of "e1" as it occurs after the event "e1" triggering. Find centralized, trusted content and collaborate around the technologies you use most.

Connect and share knowledge within a single location that is structured and easy to search. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How can I assign something to nothing in Verilog? Ask Question. Asked 7 years, 8 months ago. Active 7 years, 8 months ago. Viewed 3k times.

What is the best thing to use instead of?