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Author SHA1 Message Date
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
Nico Rieck f8e8b5f5c2 Delay attribute checking until auto types are deduced 
Checking in ActOnVariableDeclarator computes and caches the linkage using
the non-deduced auto type which defaults to external linkage. Depending on
how the auto type is deduced linkage can change and conflict with the
cached linkage, hitting asserts.

llvm-svn: 199774
 2014-01-21 23:54:36 +00:00
Aaron Ballman 604dfec8dc Re-enabled support for the Subjects for the weak attribute. This changes the diagnostic involved to be more accurate -- for C++ code, it will now report that weak applies to variables, functions or classes. Added additional test case for this. 
llvm-svn: 196120
 2013-12-02 17:07:07 +00:00
Rafael Espindola f1d2f0ea21 Check for internal weak decls after merging. 
This fixes pr14946. The problem was that the linkage computation was done too
early, so things like "extern int a;" would be given external linkage, even if
a previous declaration was static.

llvm-svn: 172667
 2013-01-16 23:11:15 +00:00
John McCall 7a198cef04 When checking the 'weak' and 'weakref' attributes, look for non-external 
linkage rather than the presence of the 'static' storage class specifier.
Fixes rdar://problem/8814626.

llvm-svn: 125126
 2011-02-08 22:35:49 +00:00