On Thu, 15 Oct 2020, at 4:16 PM, Brian Candler wrote:
> It looks like a parsing ambiguity to me. The error suggests that the
> open-brace is being treated as the start of the body of the if-statement, i.e.
>
> if v := T {
> }.F()
>
> Try changing it to
>
> if v == T{}.F(); v {}
>
> and you'll get a different error: "syntax error: unexpected . at end of
> statement"
>
It is a parsing ambiguity and is mentioned in the specification towards the end
of https://golang.org/ref/spec#Composite_literals
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