llvm-project

Author	SHA1	Message	Date
Aaron Ballman	3bef014e7d	Implement P1301R4, which allows specifying an optional message on the [[nodiscard]] attribute. This also bumps the attribute feature test value and introduces the notion of a C++2a extension warning. llvm-svn: 366626	2019-07-20 07:56:34 +00:00
Aaron Ballman	d06f391791	Add a new language mode for C2x; enable [[attribute]] support by default in C2x. llvm-svn: 360667	2019-05-14 12:09:55 +00:00
Aaron Ballman	adf66b6174	Determine the attribute subject for diagnostics based on declarative information in DeclNodes.td. This greatly reduces the number of enumerated values used for more complex diagnostics; these are now only required when the "attribute only applies to" diagnostic needs to be generated manually as part of semantic processing. This also clarifies some terminology used by the diagnostic (methods -> Objective-C methods, fields -> non-static data members, etc). Many of the tests needed to be updated in multiple places for the diagnostic wording tweaks. The first instance of the diagnostic for that attribute is fully specified and subsequent instances cut off the complete list (to make it easier if additional subjects are added in the future for the attribute). llvm-svn: 319002	2017-11-26 20:01:12 +00:00
Aaron Ballman	35713eba56	Enable support for the [[nodiscard]] attribute from WG14 N2050 when enabling double square bracket attributes in C code. llvm-svn: 316026	2017-10-17 20:33:35 +00:00