2 Commits

Author	SHA1	Message	Date
Aaron Ballman	6a42b5a0c5	Enabling the subject list for the warn_unused attribute, and adding a test case. Previously, would issue a "warning ignored" diagnostic instead of the more specific "only applies to." ... llvm-svn: 195851	2013-11-27 16:59:17 +00:00
Lubos Lunak	edc138880d	add type attribute warn_unused, for -Wunused-variable warnings (pr#14253) ... The functionality is equivalent to the GCC attribute. Variables of tagged types will be warned about as unused if they are not used in any way except for possible (even non-trivial) ctors/dtors called. Useful for tagging classes like std::string (which is not part of this commit). llvm-svn: 186765	2013-07-20 15:05:36 +00:00