Add -f[no-]double-square-bracket-attributes as new driver options to control use of [[]] attributes in all language modes. This is the initial implementation of WG14 N2165, which is a proposal to add [[]] attributes to C2x, but also allows you to enable these attributes in C++98, or disable them in C++11 or later.
llvm-svn: 315856
diff --git a/clang/lib/Sema/AttributeList.cpp b/clang/lib/Sema/AttributeList.cpp
index 724db45..14d3347 100644
--- a/clang/lib/Sema/AttributeList.cpp
+++ b/clang/lib/Sema/AttributeList.cpp
@@ -114,7 +114,8 @@
// Normalize the attribute name, __foo__ becomes foo. This is only allowable
// for GNU attributes.
bool IsGNU = SyntaxUsed == AttributeList::AS_GNU ||
- (SyntaxUsed == AttributeList::AS_CXX11 && ScopeName == "gnu");
+ ((SyntaxUsed == AttributeList::AS_CXX11 ||
+ SyntaxUsed == AttributeList::AS_C2x) && ScopeName == "gnu");
if (IsGNU && AttrName.size() >= 4 && AttrName.startswith("__") &&
AttrName.endswith("__"))
AttrName = AttrName.slice(2, AttrName.size() - 2);
@@ -135,7 +136,7 @@
// Ensure that in the case of C++11 attributes, we look for '::foo' if it is
// unscoped.
- if (ScopeName || SyntaxUsed == AS_CXX11)
+ if (ScopeName || SyntaxUsed == AS_CXX11 || SyntaxUsed == AS_C2x)
FullName += "::";
FullName += AttrName;