Richard Smith 9b2c5e7c44 [cxx2a] P0641R2: (Some) type mismatches on defaulted functions only ... render the function deleted instead of rendering the program ill-formed. This change also adds an enabled-by-default warning for the case where an explicitly-defaulted special member function of a non-template class is implicitly deleted by the type checking rules. (This fires either due to this language change or due to pre-C++20 reasons for the member being implicitly deleted). I've tested this on a large codebase and found only bugs (where the program means something that's clearly different from what the programmer intended), so this is enabled by default, but we should revisit this if there are problems with this being enabled by default. llvm-svn: 343285		2018-09-28 01:16:43 +00:00
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dcl.fct.def.default	[cxx2a] P0641R2: (Some) type mismatches on defaulted functions only	2018-09-28 01:16:43 +00:00
dcl.fct.def.delete	…
dcl.fct.def.general	…