Dan Scales d34051bf16 cmd/compile: fix case where g.curDecl should be saved/restored ... When we set g.curDecl for the type params created during fillinMethods for an instantiated type, we need to save/restore its value, because fillinMethods() may be called while processing a typeDecl. We want the value of g.curDecl to continue to be correct for type params created in the typeDecl. Because of ordering issues, not restoring g.curDecl happens to cause problems (which don't always show up visibly) exactly when a type param is not actually used in a type declaration. Cleared g.curDecl to "" at the later points in typeDecl() and funcDecl(). This allows adding asserts that g.curDecl is always empty ("") when we set it in typeDecl() and funcDecl(), and always non-empty when we use it in typ0(). Fixes #49893 Change-Id: Ic2fb1df791585bd257f2b86ffaae0453c31705c5 Reviewed-on: https://go-review.googlesource.com/c/go/+/368454 Trust: Dan Scales <danscales@google.com> Run-TryBot: Dan Scales <danscales@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>		2021-12-02 07:04:05 +00:00
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