06a43e4ab6
In getInstantiation, we were not computing tparams correctly for the case where the receiver of a method was a fully-instantiated type. This wasn't affecting later parts of the function, since method instantiations of fully-instantiated types were already being calculated in an earlier path. But it did give us a non-typeparam when trying to see if a shape was associated with a type param with a structural type. The fix is just to get the typeparams associated with the base generic type. Then we can eliminate a conditional check later in the code. The tparam parameter of Shapify should always be non-nil Fixes #51367 Change-Id: I6f95fe603886148b2dad0c581416c51373c85009 Reviewed-on: https://go-review.googlesource.com/c/go/+/388116 Trust: Dan Scales <danscales@google.com> Run-TryBot: Dan Scales <danscales@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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