[5.9][Macros] Disallow self
and Self
as macro names
#64804
Merged
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Cherry-pick #64609 to
release/5.9
.We were allowing
self
andSelf
as freestanding macro names, which we don’t want. We should ban this before introducing macros as a new feature and it starts to become legacy we will carry around forever.Change
parseDeclNameRef
so that you need to explicitly request parsing ofself
orSelf
as the declaration’s base name, and adjust all call sites except those for macros to pass that flag.