tree 299e03681b34229e0ff9cc2f7314c7de291f5687
parent fc8b4caee75eb43728f7724c3e8cd09c57c3f19b
author Robert Findley <rfindley@google.com> 1634248184 -0400
committer Robert Findley <rfindley@google.com> 1635194195 +0000

internal/typeparams: guard against generics in stdlib tests

Add a new package internal/typeparams/genericfeatures, factoring out the
check for usage of generics from the usesgenerics checker. For tests
operating on the standard library, this allows us to explicitly detect
usage of generics, rather than relying on a hard-coded list.

To make this work, I switched the go/ssa standard library test to use
go/packages rather than go/loader. This resulted in finding 457 packages
versus 676 (likely due to tests), but my assumption is that this is
still enough coverage.

Change-Id: I6ba32fb4068dd7f5eedb55c2081c642665ed124a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/355972
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tim King <taking@google.com>