[cfe-commits] [PATCH] PR8800 Don't require an implicit conversion to reference-to-class to have a complete class type

[Richard Smith]

Hi,

The attached patch fixes PR8800. When building a conversion to A& via a
class' operator A&(), we were requiring A to be complete. There seems to
be no normative rule in the standard which requires this, but C++11 FDIS
[basic.def.odr]p4 bullet 6 says "A class type T must be complete if [...]
an expression [...] is converted to type pointer to T or reference to T
using an implicit conversion" within a note.

Assuming that note is incorrect, is this patch OK to check in?

Thanks,
Richard
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