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Author SHA1 Message Date
Richard Smith 1338122b25 Add context note to diagnostics that occur while declaring an implicit special member function. 
llvm-svn: 296020
 2017-02-23 21:43:43 +00:00
Richard Smith f3cec65d01 When diagnosing that a defaulted function is ill-formed because it would be 
implicitly deleted and overrides a non-deleted function, explain why the
function is deleted. For PR30844.

llvm-svn: 285610
 2016-10-31 18:18:29 +00:00
Richard Smith 8b86f2d401 Implement final resolution of DR1402: implicitly-declared move operators that 
would be deleted are still declared, but are ignored by overload resolution.

Also, don't delete such members if a subobject has no corresponding move
operation and a non-trivial copy. This causes us to implicitly declare move
operations in more cases, but risks move-assigning virtual bases multiple
times in some circumstances (a warning for that is to follow).

llvm-svn: 193969
 2013-11-04 01:48:18 +00:00
Richard Smith b4d2a15d17 If a defaulted special member is implicitly deleted, check whether it's 
overriding a non-deleted virtual function. The existing check for this doesn't
catch this case, because it fires before we mark the method as deleted.

llvm-svn: 178563
 2013-04-02 19:38:47 +00:00
David Blaikie 7e414261f6 Implement C++ 10.3p16 - overrides involving deleted functions must match. 
Only deleted functions may override deleted functions and non-deleted functions
may only override non-deleted functions.

llvm-svn: 166082
 2012-10-17 00:47:58 +00:00