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by niemeyer 4303 days ago
The rule was never entirely clear, but there was definitely support towards allowing Go pointers to be visible in C code, as long as they were held referenced inside Go code somewhere. See this thread, for example:

https://code.google.com/p/go/issues/detail?id=6397#c11

That said, the rule is clearly changing now, and it is not even clear to what it is changing yet (see Ian's comment in this HN thread).