Commit Graph

8 Commits

Author SHA1 Message Date
Richard Smith 4d247e7012 Improve diagnostic for the case when a non-defined function-like macro is used
in a preprocessor constant expression.

llvm-svn: 266495
2016-04-16 00:07:09 +00:00
Aaron Ballman 416b127456 Disable __has_cpp_attribute when not compiling in C++ mode. As this feature test macro only supports C++ style attributes, it doesn't apply to code compiled as C code, and can lead to diagnostics when given a scoped attribute.
This addresses PR23435.

llvm-svn: 236996
2015-05-11 14:09:50 +00:00
Aaron Ballman a6f759e423 Modify __has_attribute so that it only looks for GNU-style attributes. Removes the ability to look for generic attributes and keywords via this macro, which has the potential to be a breaking change. However, since there is __has_cpp_attribute and __has_declspec_attribute, and given the limited usefulness of querying a generic attribute name regardless of syntax, this seems like the correct path forward.
llvm-svn: 223468
2014-12-05 15:24:55 +00:00
Aaron Ballman 0fa06d879a __has_attribute now understands target-specific attributes. So when you ask whether an ARM target has the "interrupt" attribute, it will return true for ARM and MSP430 targets, and false for others.
llvm-svn: 198897
2014-01-09 22:57:44 +00:00
Richard Smith baf2912b40 Generalize hack allowing 'const' in __has_attribute (etc) to allow any token
with identifier info. This covers most identifier-like entities (other than
the ISO646 keywords).

llvm-svn: 185895
2013-07-09 00:57:56 +00:00
Fariborz Jahanian 7513fa346c c: small refactoring of checking for __attribute__(const))
per Richard's comment.

llvm-svn: 161786
2012-08-13 21:15:02 +00:00
Jean-Daniel Dupas 7598fadd78 Merge __has_attribute tests. Patch by Jonathan Sauer!
llvm-svn: 151819
2012-03-01 17:45:53 +00:00
Jean-Daniel Dupas 908f130d58 Implement double underscore names support in __has_attribute
llvm-svn: 151809
2012-03-01 14:53:16 +00:00