Why does clLinkProgram take a context handle?

Question

In OpenCL, the clLinkProgram() function takes (among other things)

• A cl_context context handle;
• An array of cl_program handles of program objects.

Now, a cl_program is always created in a context; and unless I'm mistaken, all programs being linked must share the same context. It should therefore be possible to just obtain the programs' context handle.

So: Is the context handle parameter of clLinkProgram() redundant?