rsmith accepted this revision.
rsmith added a comment.
This revision is now accepted and ready to land.
Thanks, LGTM :)
================
Comment at: ../llvm/tools/clang/include/clang/Driver/Options.td:609-616
+def fdouble_square_bracket_attributes
+ : Flag<[ "-" ], "fdouble-square-bracket-attributes">,
+ Group<f_Group>, Flags<[ DriverOption, CC1Option ]>,
+ HelpText<"Enable '[[]]' attributes in all C and C++ language modes">;
+def fno_double_square_bracket_attributes
+ : Flag<[ "-" ], "fno-fdouble-square-bracket-attributes">,
+ Group<f_Group>, Flags<[ DriverOption ]>,
----------------
This is not formatted how we normally format tablegen files.
================
Comment at: ../llvm/tools/clang/lib/Parse/ParseDecl.cpp:4422
+ if (standardAttributesAllowed() && isCXX11AttributeSpecifier()) {
if (!getLangOpts().CPlusPlus1z)
Diag(Tok.getLocation(), diag::warn_cxx14_compat_attribute)
----------------
Is this warning appropriate in C? I don't recall whether your proposal permits
attributes on enumerators or not.
... in fact, this warning is completely wrong. Fixed in r315784. This should
presumably be guarded by an `if (getLangOpts().CPlusPlus)` with your change,
though.
================
Comment at: ../llvm/tools/clang/lib/Parse/ParseDeclCXX.cpp:3856-3857
+ const LangOptions &LO = getLangOpts();
+ bool AsCXX =
+ LO.CPlusPlus11 || (LO.DoubleSquareBracketAttributes && LO.CPlusPlus);
+ AttributeList::Syntax Syntax =
----------------
I think you can simplify this to `LO.CPlusPlus`, because
`LO.DoubleSquareBracketAttributes` should always be `true` if we get here.
(Right?)
================
Comment at: clang/lib/Parse/ParseTentative.cpp:592
bool OuterMightBeMessageSend) {
- if (Tok.is(tok::kw_alignas))
+ if (Tok.is(tok::kw_alignas) && getLangOpts().CPlusPlus11)
return CAK_AttributeSpecifier;
----------------
aaron.ballman wrote:
> rsmith wrote:
> > This change is redundant. We wouldn't lex a `kw_alignas` token outside
> > C++11.
> Ah, I thought that we would hit this case for `_Alignas` as well, but I see
> that's a different keyword. Just to double-check -- we don't expect
> `-fdouble-square-bracket-attributes` to enable `alignas` in C++98, correct?
Right, I would not expect it to affect the set of available keywords.
https://reviews.llvm.org/D37436
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