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a991d9dc27
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Dan Scales a991d9dc27 cmd/compile: add missing shape check in (*Tsubster).tinter 
Add a missing shape check in (*Tsubster).tinter when substituting on a
generic type which is an empty interface, analogous to same check in
(*Tsubster).tstruct. Empty structs/interfaces that have rparams (i.e.
are a generic type or a shape type) need to get a new type of their
rparams - they will be different even though they don't have any
fields/methods. Without this shape check, we were not correctly
completing the Token[int] type during substitution in the example in the
issue. This issue only happens for a generic type which is an empty
interface (i.e. doesn't actually use the type param, hence quite unusual).

Added the test case already created by Keith.

Fixes #50841

Change-Id: Ia985b9f52c0e87ed0647b46373e44c51cb748ba4
Reviewed-on: https://go-review.googlesource.com/c/go/+/381175
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>
2022-01-27 05:30:27 +00:00
.github .github: remove duplicate security link 2022-01-07 17:55:09 +00:00
api api: promote next to go1.18 2021-12-14 17:43:51 +00:00
doc Revert "spec: document the underlying type of comparable" 2022-01-26 23:43:39 +00:00
lib/time lib/time, time/tzdata: update to 2021e 2021-11-11 05:16:39 +00:00
misc src/runtime: mark asanread and asanwrite functions as NOSPLIT 2022-01-05 09:50:29 +00:00
src cmd/compile: add missing shape check in (*Tsubster).tinter 2022-01-27 05:30:27 +00:00
test cmd/compile: add missing shape check in (*Tsubster).tinter 2022-01-27 05:30:27 +00:00
.gitattributes
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Bharath Kumar Uppala (individual CLA) 2021-11-29 00:57:09 +00:00
codereview.cfg
CONTRIBUTING.md
CONTRIBUTORS A+C: add Bharath Kumar Uppala (individual CLA) 2021-11-29 00:57:09 +00:00
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README.md README.md: update contribute URL 2021-09-30 13:33:21 +00:00
SECURITY.md

README.md

The Go Programming Language

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