[cfe-dev] clang ToT doesn't build on macOS 10.10 anymore...?

[Sean McBride via cfe-dev]

Akira,

Yes, it seems so.  If I try to build r321543 I don't get the DISPATCH_NOESCAPE error, but do still get the adddf3.c error.

Sean


On Sat, 10 Mar 2018 15:46:54 -0800, Akira Hatanaka said:

>Wasn't the NOESCAPE error fixed in r321543?
>
>https://reviews.llvm.org/D41601
>
>On Sat, Mar 10, 2018 at 1:35 PM, Sean McBride <sean at rogue-research.com>
>wrote:
>
>> CC'ing ahatanak and efriedma
>>
>> So I bisected where building on macOS 10.10 broke, and found at least 2
>> commits that introduced errors:
>>
>> -------------------------------
>> r313929 | ahatanak | 2017-09-21 18:16:50 -0400 (Thu, 21 Sep 2017)
>>
>> /llvm/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_libdispatch_mac.cc:229:1:
>> error: unknown type name 'DISPATCH_NOESCAPE'
>> DISPATCH_INTERCEPT_SYNC_B(dispatch_sync, false)
>> ^
>> -------------------------------
>>
>> -------------------------------
>> r314851 | efriedma | 2017-10-03 17:25:07 -0400 (Tue, 03 Oct 2017)
>>
>> /llvm/llvm/projects/compiler-rt/lib/builtins/adddf3.c:28:53: error: alias
>> unsupported on this file format
>> AEABI_RTABI double __aeabi_dadd(double a, double b)
>> COMPILER_RT_ALIAS(__adddf3);
>>                                                     ^
>> -------------------------------
>>
>>
>> On Wed, 7 Feb 2018 12:23:16 +0100, Hans Wennborg said:
>>
>> >I just ran into the same thing :-/
>> >
>> >On Fri, Jan 26, 2018 at 11:22 PM, Sean McBride via cfe-dev
>> ><cfe-dev at lists.llvm.org> wrote:
>> >> Hi all,
>> >>
>> >> I just tried updating my clang build on a few machines, and it built
>> >fine on 10.11, but on a macOS 10.10 with AppleClang 7.0.2.7000181 I get
>> this:
>> >>
>> >> /Users/builder/llvm/llvm/projects/compiler-rt/lib/builtins/adddf3.c:
>> >28:53: error: alias unsupported on this file format
>> >> AEABI_RTABI double __aeabi_dadd(double a, double b)
>> >COMPILER_RT_ALIAS(__adddf3);
>> >>                                                     ^
>> >> /Users/builder/llvm/llvm/projects/compiler-rt/lib/builtins/int_lib.h:
>> >29:36: note: expanded from macro 'COMPILER_RT_ALIAS'
>> >> #define COMPILER_RT_ALIAS(aliasee) _Pragma("GCC error(\"alias
>> >unsupported on this file format\")")
>> >>                                    ^
>> >> <scratch space>:89:6: note: expanded from here
>> >>  GCC error("alias unsupported on this file format")
>> >>      ^
>> >>
>> >> Should this build?  Is 10.10 supported?
>>