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Re: Clang compile error
From: |
Akim Demaille |
Subject: |
Re: Clang compile error |
Date: |
Sat, 17 Nov 2018 16:15:50 +0100 |
Hi Laurence,
> Le 17 nov. 2018 à 02:30, Lawrence Murray <address@hidden> a écrit :
>
> Just wanted to report a minor issue that I encountered yesterday after
> upgrading to Bison 3.2.1 and Xcode 10.1 on macOS, for which the corresponding
> compiler is "Apple LLVM version 10.0.0 (clang-1000.11.45.5)".
>
> I get the following error when compiling C++ code generated from bison:
>
> parser.cpp:1395:8: error: an attribute list cannot appear here
> static _Noreturn void
> ^~~~~~~~~
> parser.cpp:231:21: note: expanded from macro '_Noreturn'
> # define _Noreturn [[noreturn]]
> ^~~~~~~~~~~~
>
> I believe the standard syntax is that the attribute should appear before the
> "static" keyword, so "_Noreturn static void" instead of "static _Noreturn
> void", although other compilers are more forgiving.
>
> A quick fix in the meantime is to add « -D_Noreturn=" to the C++ compiler
> flags, as the attribute is not essential.
Sorry, I discovered this recently too, see
https://lists.gnu.org/archive/html/bison-patches/2018-11/msg00042.html. I
don’t know whether that means I should release a 3.2.2. WDYT?
Does that mean that you are a user of glr.cc? I don’t much feedback about it,
unfortunately. Also, I’m looking for the opinion about a proposal for GLR
parsers: see
https://lists.gnu.org/archive/html/bison-patches/2013-02/msg00105.html and
https://lists.gnu.org/archive/html/bison-patches/2018-11/msg00008.html and
following.
Cheers!