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languages/go

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cmd/compile: fix identity case relating to 'any' and shape types In identical(), we don't want any to match a shape empty-interface type for the identStrict option, since IdenticalStrict() is specifically not supposed to match a shape type with a non-shape type. There is similar code in (*Type).cmp() (TINTER case), but I don't believe that we want to disqualify shape types from matching any in this case, since cmp() is used for back-end code, where we don't care about shape types vs non-shape types. The issue mainly comes about when 'any' is used as a type argument (rather than 'interface{}'), but only with some complicated circumstances, as shown by the test case. (Couldn't reproduce with simpler test cases.) Fixes #50109 Change-Id: I3f2f88be158f9ad09273237e1d346bc56aac099f Reviewed-on: https://go-review.googlesource.com/c/go/+/371154 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>

2021-12-12 19:08:59 +00:00

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